GERIATRIC USE SECTION.


8.5 Geriatric Use. Clinical studies of dronabinol capsules in AIDS and cancer patients did not include the sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Elderly patients may be more sensitive to the neuropsychiatric and postural hypotensive effects of dronabinol capsules [see Warnings and Precautions (5.1, 5.2)]. Elderly patients with dementia are at increased risk for falls as result of their underlying disease state, which may be exacerbated by the CNS effects of somnolence and dizziness associated with dronabinol capsules [see Warnings and Precautions (5.1)]. These patients should be monitored closely and placed on fall precautions prior to initiating dronabinol capsule therapy. In antiemetic studies, no difference in efficacy was apparent in patients greater than 55 years of age compared to younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of falls, decreased hepatic, renal, or cardiac function, increased sensitivity to psychoactive effects, and of concomitant disease or other drug therapy [see Dosage and Administration (2.1, 2.2)].

HOW SUPPLIED SECTION.


16 HOW SUPPLIED/STORAGE AND HANDLING. Dronabinol Capsules, USP2.5 mg white capsules (Identified M2).Carton of 100 capsules (10 capsules each blister pack 10 ), NDC 0904-7144-615 mg dark brown capsules (Identified M5).Carton of 30 capsules (10 capsules each blister pack 3), NDC 0904-7145-04Storage ConditionsDronabinol capsules should be packaged in well-closed container and stored in cool environment between and 15C (46 and 59F) and alternatively could be stored in refrigerator. Protect from freezing.

INDICATIONS & USAGE SECTION.


1 INDICATIONS AND USAGE. Dronabinol capsules are indicated in adults for the treatment of:oanorexia associated with weight loss in patients with Acquired Immune Deficiency Syndrome (AIDS).o nausea and vomiting associated with cancer chemotherapy in patients who have failed to respond adequately to conventional antiemetic treatments.. oanorexia associated with weight loss in patients with Acquired Immune Deficiency Syndrome (AIDS).. nausea and vomiting associated with cancer chemotherapy in patients who have failed to respond adequately to conventional antiemetic treatments.. Dronabinol capsules is cannabinoid indicated in adults for the treatment of:oAnorexia associated with weight loss in patients with AIDS. (1) oNausea and vomiting associated with cancer chemotherapy in patients who have failed to respond adequately to conventional antiemetic treatments. (1). oAnorexia associated with weight loss in patients with AIDS. (1) oNausea and vomiting associated with cancer chemotherapy in patients who have failed to respond adequately to conventional antiemetic treatments. (1).

INFORMATION FOR PATIENTS SECTION.


17 PATIENT COUNSELING INFORMATION. Advise the patient to read the FDA-approved patient labeling (Patient Information). Neuropsychiatric Adverse Reactions[see Warnings and Precautions (5.1)]oAdvise patients that psychiatric adverse reactions may occur, especially in patients with past psychiatric history or in those receiving other drugs also associated with psychiatric effects, and to report to their healthcare provider any new or worsening psychiatric symptoms.oAdvise patients, especially elderly patients, that cognitive impairment or an altered mental state may also occur during treatment with dronabinol capsules and to report to their healthcare provider if they develop signs or symptoms of cognitive impairment. oAdvise patients not to operate motor vehicles or other dangerous machinery until they are reasonably certain that dronabinol capsules do not affect them adversely. Alert patients to the potential for additive central nervous system depression if dronabinol capsules is used concomitantly with alcohol or other CNS depressants such as benzodiazepines and barbiturates. Hemodynamic InstabilityAdvise patients, especially those with cardiac disorders, to report to their healthcare provider if they experience any signs or symptoms of hemodynamic instability, including hypotension, hypertension, syncope or tachycardia, especially after initiating or increasing the dosage of dronabinol capsules [see Warnings and Precautions (5.2)]. SeizuresAdvise patients to discontinue dronabinol capsules and contact healthcare provider immediately if they experience seizure [see Warnings and Precautions (5.3)]. Multiple Substance AbuseInform patients with history of substance abuse or dependence, including marijuana or alcohol, that they may be more likely to abuse dronabinol capsules. Advise patients to report to their healthcare provider if they develop abuse behaviors or conditions [see Warnings and Precautions (5.4)]. Paradoxical Nausea, Vomiting, or Abdominal Pain Advise patients to report worsening nausea, vomiting or abdominal pain to their healthcare provider [see Warnings and Precautions (5.5)]. Pregnancy Advise pregnant women of the potential risk to fetus and to avoid use of dronabinol capsules during pregnancy [see Use in Specific Populations (8.1)]. LactationoAdvise HIV infected women with anorexia associated with weight loss, not to breastfeed.oAdvise women with nausea and vomiting associated with cancer chemotherapy not to breastfeed during treatment with dronabinol capsules and for days after the last dose [see Use in Specific Populations (8.2)].Manufactured by: Patheon Softgels Inc. High Point, NC 27265Distributed by:Ascend Laboratories, LLC Parsippany, NJ 07054 Distributed By:MAJOR(R) PHARMACEUTICALSLivonia, MI 48152Refer to package label for Distributors NDC Number 1248E00 10/20. oAdvise patients that psychiatric adverse reactions may occur, especially in patients with past psychiatric history or in those receiving other drugs also associated with psychiatric effects, and to report to their healthcare provider any new or worsening psychiatric symptoms.. oAdvise patients, especially elderly patients, that cognitive impairment or an altered mental state may also occur during treatment with dronabinol capsules and to report to their healthcare provider if they develop signs or symptoms of cognitive impairment. oAdvise patients not to operate motor vehicles or other dangerous machinery until they are reasonably certain that dronabinol capsules do not affect them adversely. Alert patients to the potential for additive central nervous system depression if dronabinol capsules is used concomitantly with alcohol or other CNS depressants such as benzodiazepines and barbiturates. oAdvise HIV infected women with anorexia associated with weight loss, not to breastfeed.. oAdvise women with nausea and vomiting associated with cancer chemotherapy not to breastfeed during treatment with dronabinol capsules and for days after the last dose [see Use in Specific Populations (8.2)].

LABOR & DELIVERY SECTION.


8.2 Lactation. Risk SummaryFor mothers infected with the Human Immunodeficiency Virus (HIV), the Centers for Disease Control and Prevention recommends that HIV-infected mothers not breastfeed their infants to avoid risking postnatal transmission of HIV. Because of the potential for HIV transmission (in HIV-negative infants) and serious adverse reactions in breastfed infant, instruct mothers not to breastfeed if they are receiving dronabinol capsules. For mothers with nausea and vomiting associated with cancer chemotherapy, there are limited data on the presence of dronabinol in human milk, the effects on the breastfed infant, or the effects on milk production. The reported effects of inhaled cannabis transferred to the breastfeeding infant have been inconsistent and insufficient to establish causality. Because of the possible adverse effects from dronabinol capsules on the breastfeeding infant, advise women with nausea and vomiting associated with cancer chemotherapy not to breastfeed during treatment with dronabinol capsules and for days after the last dose.

MECHANISM OF ACTION SECTION.


12.1 Mechanism of Action. Dronabinol is an orally active cannabinoid which has complex effects on the CNS, including central sympathomimetic activity. Cannabinoid receptors have been discovered in neural tissues. These receptors may play role in mediating the effects of dronabinol.

NONCLINICAL TOXICOLOGY SECTION.


13 NONCLINICAL TOXICOLOGY. 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility. In 2-year carcinogenicity studies, there was no evidence of carcinogenicity in rats at doses up to 50 mg/kg/day dronabinol (approximately 20 times the MRHD in AIDS patients on body surface area basis) or in mice at doses up to 500 mg/kg/day (approximately 100 times the MRHD in AIDS patients on body surface area basis). Dronabinol was not genotoxic in the Ames tests, the in vitro chromosomal aberration test in Chinese hamster ovary cells, and the in vivo mouse micronucleus test. However, dronabinol produced weak positive response in sister chromatid exchange test in Chinese hamster ovary cells. In long-term study (77 days) in rats, oral administration of dronabinol at doses of 30 to 150 mg/m2, equivalent to to 10 times the MRHD of 15 mg/m2/day in AIDS patients or 0.3 to 1.5 times the MRHD of 90 mg/m2/day in cancer patients, reduced ventral prostate, seminal vesicle and epididymal weights and caused decrease in seminal fluid volume. Decreases in spermatogenesis, number of developing germ cells, and number of Leydig cells in the testis were also observed. However, sperm count, mating success, and testosterone levels were not affected. The significance of these animal findings in humans is not known.

OVERDOSAGE SECTION.


10 OVERDOSAGE. Signs and symptoms of dronabinol overdosage include drowsiness, euphoria, heightened sensory awareness, altered time perception, reddened conjunctiva, dry mouth, tachycardia, memory impairment, depersonalization, mood alteration, urinary retention, reduced bowel motility, decreased motor coordination, lethargy, slurred speech, and postural hypotension. Patients may also experience panic reactions if they have prior history of nervousness or anxiety, and seizures may occur in patients with existing seizure disorders. It is not known if dronabinol can be removed by dialysis in cases of overdose. If over-exposure of dronabinol capsules occurs, call your Poison Control Center at 1-800-222-1222 for current information on the management of poisoning or overdosage.

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL.


Package/Label Display Panel Dronabinol Capsules, USP CIII2.5 mg100 Capsules carton label.

PEDIATRIC USE SECTION.


8.4 Pediatric Use. The safety and effectiveness of dronabinol capsules have not been established in pediatric patients. Pediatric patients may be more sensitive to neurological and psychoactive effects of dronabinol capsules [see Warnings and Precautions (5.1)].

PHARMACODYNULLMICS SECTION.


12.2 Pharmacodynamics. Effects on the Cardiovascular SystemDronabinol-induced sympathomimetic activity may result in tachycardia and/or conjunctival injection. Its effects on blood pressure are inconsistent, but subjects have experienced orthostatic hypotension and/or syncope upon abrupt standing [see Warnings and Precautions (5.2)]. Effects on the Central Nervous SystemDronabinol also demonstrates reversible effects on appetite, mood, cognition, memory, and perception. These phenomena appear to be dose-related, increasing in frequency with higher dosages, and subject to great inter-patient variability. After oral administration, dronabinol has an onset of action of approximately 0.5 to hours and peak effect at to hours. Duration of action for psychoactive effects is to hours, but the appetite stimulant effect of dronabinol may continue for 24 hours or longer after administration. Tachyphylaxis and tolerance develop to some of the pharmacologic effects of dronabinol with chronic use, suggesting an indirect effect on sympathetic neurons. In study of the pharmacodynamics of chronic dronabinol exposure, healthy male subjects (N 12) received 210 mg per day of dronabinol capsules, administered orally in divided doses, for 16 days. An initial tachycardia induced by dronabinol was replaced successively by normal sinus rhythm and then bradycardia. decrease in supine blood pressure, made worse by standing, was also observed initially. These subjects developed tolerance to the cardiovascular and subjective adverse CNS effects of dronabinol within 12 days of treatment initiation. Tachyphylaxis and tolerance do not appear to develop to the appetite stimulant effect of dronabinol capsules. In clinical studies involving AIDS patients, the appetite stimulant effect of dronabinol capsules was sustained for up to five months at dosages ranging from 2.5 mg to 20 mg per day.

PHARMACOKINETICS SECTION.


12.3 Pharmacokinetics. AbsorptionDronabinol (delta-9-THC) is almost completely absorbed (90 to 95%) after single oral doses. Due to the combined effects of first pass hepatic metabolism and high lipid solubility, only 10 to 20% of the administered dose reaches the systemic circulation. Concentrations of both parent drug and its major active metabolite (11-hydroxy-delta-9-THC) peak at approximately 0.5 to hours after oral dosing and decline over several days. The pharmacokinetics of dronabinol after single doses (2.5, 5, and 10 mg) and multiple doses (2.5, 5, and 10 mg given twice day) have been studied in healthy subjects. Summary of Multiple-Dose Pharmacokinetic Parameters of Dronabinol in Healthy Subjects (n=34; 20-45 years) under Fasted Conditions Mean (SD) PK Parameter ValuesTwice Daily DoseCmax ng/mLMedian Tmax (range), hrAUC(0-12) ngohr/mL2.5 mg 1.32 (0.62) 1.00 (0.50-4.00) 2.88 (1.57) mg 2.96 (1.81) 2.50 (0.50-4.00) 6.16 (1.85) 10 mg 7.88 (4.54) 1.50 (0.50-3.50) 15.2 (5.52) Cmax: maximum observed plasma concentration; Tmax: time to maximum observed plasma concentration; AUC(0-12): area under the plasma concentration-time curve from to 12 hours. slight increase in dose proportionality on mean Cmax and AUC(0-12) of dronabinol was observed with increasing dose over the dose range studied.Effect of Food: In published study, the effect of food on the pharmacokinetics of dronabinol was studied by concomitant dosing of dronabinol capsules with high-fat (59 grams of fat, approximately 50% of total caloric content of the meal), high calorie meal (approximately 950 calories). An appreciable food effect was observed, resulting in 4-hour delay in mean Tmax and 2.9-fold increase in total exposure (AUCinf), but Cmax was not significantly changed [see Dosage and Administration (2.2)]. DistributionDronabinol has an apparent volume of distribution of approximately 10 L/kg, because of its lipid solubility. The plasma protein binding of dronabinol and its metabolites is approximately 97% [see Drug Interactions (7.4)]. EliminationThe pharmacokinetics of dronabinol can be described using two compartment model with an initial (alpha) half-life of about hours and terminal (beta) half-life of 25 to 36 hours. Values for clearance average about 0.2 L/kg-hr, but are highly variable due to the complexity of cannabinoid distribution. MetabolismDronabinol undergoes extensive first-pass hepatic metabolism, primarily by hydroxylation, yielding both active and inactive metabolites. Dronabinol and its principal active metabolite, 11-hydroxy-delta-9-THC, are present in approximately equal concentrations in plasma. Published in vitro data indicates that CYP2C9 and CYP3A4 are the primary enzymes in the metabolism of dronabinol. CYP2C9 appears to be the enzyme responsible for the formation of the primary active metabolite [see Clinical Pharmacology (12.5)]. ExcretionDronabinol and its biotransformation products are excreted in both feces and urine. Biliary excretion is the major route of elimination with about half of radio-labeled oral dose being recovered from the feces within 72 hours as contrasted with 10 to 15% recovered from urine. Less than 5% of an oral dose is recovered unchanged in the feces.Due to its re-distribution, dronabinol and its metabolites may be excreted at low levels for prolonged periods of time. Following single dose administration, low levels of dronabinol metabolites have been detected for more than weeks in the urine and feces.In study of dronabinol capsules involving AIDS patients, urinary cannabinoid/creatinine concentration ratios were studied bi-weekly over six week period. The urinary cannabinoid/creatinine ratio was closely correlated with dose. No increase in the cannabinoid/creatinine ratio was observed after the first two weeks of treatment, indicating that steady-state cannabinoid levels had been reached. This conclusion is consistent with predictions based on the observed terminal half-life of dronabinol.Drug Interaction StudiesFormal drug-drug interaction studies have not been conducted with dronabinol. The enzyme inhibition and induction potential of dronabinol and its active metabolite are not completely understood. Published data showed an increase in the elimination half-life of pentobarbital by hours when concomitantly dosed with dronabinol [see Warnings and Precautions (5.1)].

PREGNULLNCY SECTION.


8.1 Pregnancy. Risk SummaryDronabinol capsules, synthetic cannabinoid, may cause fetal harm. Avoid use of dronabinol capsules in pregnant women. Although there is little published data on the use of synthetic cannabinoids during pregnancy, use of cannabis (e.g., marijuana) during pregnancy has been associated with adverse fetal/neonatal outcomes [see Clinical Considerations]. Cannabinoids have been found in the umbilical cord blood from pregnant women who smoke cannabis. In animal reproduction studies, no teratogenicity was reported in mice administered dronabinol at up to 30 times the MRHD (maximum recommended human dose) and up to times the MRHD for patients with AIDS and cancer, respectively. Similar findings were reported in pregnant rats administered dronabinol at up to to 20 times the MRHD and times the MRHD for patients with AIDS and cancer, respectively. Decreased maternal weight gain and number of viable pups and increased fetal mortality and early resorptions were observed in both species at doses which induced maternal toxicity. In published studies, offspring of pregnant rats administered delta-9-THC during and after organogenesis have been reported to exhibit neurotoxicity with adverse effects on brain development, including abnormal neuronal connectivity and impairments in cognitive and motor function [see Data]. The estimated background risk of major birth defects and miscarriage for the indicated populations are unknown. All pregnancies have background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is to 4% and 15 to 20%, respectively.Clinical ConsiderationsFetal/Neonatal Adverse ReactionsPublished studies suggest that during pregnancy, the use of cannabis, which includes THC, whether for recreational or medicinal purposes, may increase the risk of adverse fetal/neonatal outcomes including fetal growth restriction, low birth weight, preterm birth, small-for-gestational age, admission to the NICU, and stillbirth. Therefore, use of cannabis during pregnancy should be avoided.DataHuman DataDelta-9-THC has been measured in the cord blood of some infants whose mothers reported prenatal use of cannabis, suggesting that dronabinol may cross the placenta to the fetus during pregnancy. The effects of delta-9-THC on the fetus are not known. Animal DataReproduction studies with dronabinol have been performed in mice at 15 to 450 mg/m2, equivalent to to 30 times the MRHD of 15 mg/m2/day in AIDS patients or 0.2 to times the MRHD of 90 mg/m2/day in cancer patients, and in rats at 74 to 295 mg/m2 (equivalent to to 20 times the MRHD of 15 mg/m2/day in AIDS patients or 0.8 to times the MRHD of 90 mg/m2/day in cancer patients). These studies have revealed no evidence of teratogenicity due to dronabinol. At these dosages in mice and rats, dronabinol decreased maternal weight gain and number of viable pups and increased fetal mortality and early resorptions. Such effects were dose dependent and less apparent at lower doses that produced less maternal toxicity. Review of published literature indicates that the endocannabinoid system plays role in neurodevelopmental processes such as neurogenesis, migration, and synaptogenesis. Exposure of pregnant rats to delta-9-THC (during and after organogenesis) may modulate these processes to result in abnormal patterns of neuronal connectivity and subsequent cognitive impairments in the offspring. Nonclinical toxicity studies in pregnant rats and newborn pups have shown prenatal exposure to THC that resulted in impairment of motor function, alteration in synaptic activity, and interference in cortical projection of neuron development in the offspring. Prenatal exposure has shown effects on cognitive function such as learning, short-and long-term memory, attention, decreased ability to remember task, and ability to discriminate between novel and same objects. Overall, prenatal exposure to THC has resulted in significant and long-term changes in brain development, cognition, and behavior in rat offspring.

SPL UNCLASSIFIED SECTION.


2.1 Anorexia Associated with Weight Loss in Adult Patients with AIDS. Starting DosageThe recommended adult starting dosage of dronabinol capsules is 2.5 mg orally twice daily, one hour before lunch and dinner. In elderly patients or patients unable to tolerate 2.5 mg twice daily, consider initiating dronabinol capsules at 2.5 mg once daily one hour before dinner or at bedtime to reduce the risk of central nervous system (CNS) symptoms [see Use in Specific Populations (8.5)]. Dosing later in the day may reduce the frequency of CNS adverse reactions. CNS adverse reactions are dose-related [see Warnings and Precautions (5.1)]; therefore monitor patients and reduce the dosage as needed. If CNS adverse reactions of feeling high, dizziness, confusion, and somnolence occur, they usually resolve in to days and usually do not require dosage reduction. If CNS adverse reactions are severe or persistent, reduce the dosage to 2.5 mg in the evening or at bedtime. Dosage TitrationIf tolerated and further therapeutic effect is desired, the dosage may be increased gradually to 2.5 mg one hour before lunch and mg one hour before dinner. Increase the dose of dronabinol capsules gradually in order to reduce the frequency of dose-related adverse reactions [see Warnings and Precautions (5.1)]. Most patients respond to 2.5 mg twice daily, but the dose may be further increased to mg one hour before lunch and mg one hour before dinner, as tolerated to achieve therapeutic effect. Maximum Dosage: 10 mg twice daily.

USE IN SPECIFIC POPULATIONS SECTION.


8 USE IN SPECIFIC POPULATIONS. oPregnancy: May cause fetal harm. (8.1) oLactation: Advise HIV-infected women not to breastfeed. Advise women with nausea and vomiting associated with cancer chemotherapy not to breastfeed during treatment with dronabinol capsules and for days after the last dose. (8.2) oGeriatric Use: Elderly patients may be more sensitive to the neuropsychiatric and postural hypotensive effects. Consider lower starting dose in elderly patients. (2.1, 2.2, 5.1, 5.2, 8.5). oPregnancy: May cause fetal harm. (8.1) oLactation: Advise HIV-infected women not to breastfeed. Advise women with nausea and vomiting associated with cancer chemotherapy not to breastfeed during treatment with dronabinol capsules and for days after the last dose. (8.2) oGeriatric Use: Elderly patients may be more sensitive to the neuropsychiatric and postural hypotensive effects. Consider lower starting dose in elderly patients. (2.1, 2.2, 5.1, 5.2, 8.5). 8.1 Pregnancy. Risk SummaryDronabinol capsules, synthetic cannabinoid, may cause fetal harm. Avoid use of dronabinol capsules in pregnant women. Although there is little published data on the use of synthetic cannabinoids during pregnancy, use of cannabis (e.g., marijuana) during pregnancy has been associated with adverse fetal/neonatal outcomes [see Clinical Considerations]. Cannabinoids have been found in the umbilical cord blood from pregnant women who smoke cannabis. In animal reproduction studies, no teratogenicity was reported in mice administered dronabinol at up to 30 times the MRHD (maximum recommended human dose) and up to times the MRHD for patients with AIDS and cancer, respectively. Similar findings were reported in pregnant rats administered dronabinol at up to to 20 times the MRHD and times the MRHD for patients with AIDS and cancer, respectively. Decreased maternal weight gain and number of viable pups and increased fetal mortality and early resorptions were observed in both species at doses which induced maternal toxicity. In published studies, offspring of pregnant rats administered delta-9-THC during and after organogenesis have been reported to exhibit neurotoxicity with adverse effects on brain development, including abnormal neuronal connectivity and impairments in cognitive and motor function [see Data]. The estimated background risk of major birth defects and miscarriage for the indicated populations are unknown. All pregnancies have background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is to 4% and 15 to 20%, respectively.Clinical ConsiderationsFetal/Neonatal Adverse ReactionsPublished studies suggest that during pregnancy, the use of cannabis, which includes THC, whether for recreational or medicinal purposes, may increase the risk of adverse fetal/neonatal outcomes including fetal growth restriction, low birth weight, preterm birth, small-for-gestational age, admission to the NICU, and stillbirth. Therefore, use of cannabis during pregnancy should be avoided.DataHuman DataDelta-9-THC has been measured in the cord blood of some infants whose mothers reported prenatal use of cannabis, suggesting that dronabinol may cross the placenta to the fetus during pregnancy. The effects of delta-9-THC on the fetus are not known. Animal DataReproduction studies with dronabinol have been performed in mice at 15 to 450 mg/m2, equivalent to to 30 times the MRHD of 15 mg/m2/day in AIDS patients or 0.2 to times the MRHD of 90 mg/m2/day in cancer patients, and in rats at 74 to 295 mg/m2 (equivalent to to 20 times the MRHD of 15 mg/m2/day in AIDS patients or 0.8 to times the MRHD of 90 mg/m2/day in cancer patients). These studies have revealed no evidence of teratogenicity due to dronabinol. At these dosages in mice and rats, dronabinol decreased maternal weight gain and number of viable pups and increased fetal mortality and early resorptions. Such effects were dose dependent and less apparent at lower doses that produced less maternal toxicity. Review of published literature indicates that the endocannabinoid system plays role in neurodevelopmental processes such as neurogenesis, migration, and synaptogenesis. Exposure of pregnant rats to delta-9-THC (during and after organogenesis) may modulate these processes to result in abnormal patterns of neuronal connectivity and subsequent cognitive impairments in the offspring. Nonclinical toxicity studies in pregnant rats and newborn pups have shown prenatal exposure to THC that resulted in impairment of motor function, alteration in synaptic activity, and interference in cortical projection of neuron development in the offspring. Prenatal exposure has shown effects on cognitive function such as learning, short-and long-term memory, attention, decreased ability to remember task, and ability to discriminate between novel and same objects. Overall, prenatal exposure to THC has resulted in significant and long-term changes in brain development, cognition, and behavior in rat offspring.. 8.2 Lactation. Risk SummaryFor mothers infected with the Human Immunodeficiency Virus (HIV), the Centers for Disease Control and Prevention recommends that HIV-infected mothers not breastfeed their infants to avoid risking postnatal transmission of HIV. Because of the potential for HIV transmission (in HIV-negative infants) and serious adverse reactions in breastfed infant, instruct mothers not to breastfeed if they are receiving dronabinol capsules. For mothers with nausea and vomiting associated with cancer chemotherapy, there are limited data on the presence of dronabinol in human milk, the effects on the breastfed infant, or the effects on milk production. The reported effects of inhaled cannabis transferred to the breastfeeding infant have been inconsistent and insufficient to establish causality. Because of the possible adverse effects from dronabinol capsules on the breastfeeding infant, advise women with nausea and vomiting associated with cancer chemotherapy not to breastfeed during treatment with dronabinol capsules and for days after the last dose.. 8.4 Pediatric Use. The safety and effectiveness of dronabinol capsules have not been established in pediatric patients. Pediatric patients may be more sensitive to neurological and psychoactive effects of dronabinol capsules [see Warnings and Precautions (5.1)]. 8.5 Geriatric Use. Clinical studies of dronabinol capsules in AIDS and cancer patients did not include the sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Elderly patients may be more sensitive to the neuropsychiatric and postural hypotensive effects of dronabinol capsules [see Warnings and Precautions (5.1, 5.2)]. Elderly patients with dementia are at increased risk for falls as result of their underlying disease state, which may be exacerbated by the CNS effects of somnolence and dizziness associated with dronabinol capsules [see Warnings and Precautions (5.1)]. These patients should be monitored closely and placed on fall precautions prior to initiating dronabinol capsule therapy. In antiemetic studies, no difference in efficacy was apparent in patients greater than 55 years of age compared to younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of falls, decreased hepatic, renal, or cardiac function, increased sensitivity to psychoactive effects, and of concomitant disease or other drug therapy [see Dosage and Administration (2.1, 2.2)]. 8.6 Effect of CYP2C9 Polymorphism. Published data suggest that systemic clearance of dronabinol may be reduced and concentrations may be increased in the presence of CYP2C9 genetic polymorphism. Monitoring for potentially increased adverse reactions is recommended in patients known to carry genetic variants associated with diminished CYP2C9 function [see Clinical Pharmacology (12.5)].

ABUSE SECTION.


9.2 Abuse. Dronabinol capsules contains dronabinol, the main psychoactive component in marijuana. Ingestion of high doses of dronabinol increases the risk of psychiatric adverse reactions if abused or misused, while continued administration can lead to addiction. Psychiatric adverse reactions may include psychosis, hallucinations, depersonalization, mood alteration, and paranoia. In an open-label study in patients with AIDS who received dronabinol capsules for up to five months, no abuse, diversion or systematic change in personality or social functioning were observed despite the inclusion of substantial number of patients with past history of drug abuse. Patients should be instructed to keep dronabinol capsules in secure place out of reach of others for whom the medication has not been prescribed.

ADVERSE REACTIONS SECTION.


6 ADVERSE REACTIONS. oMost common adverse reactions (>=3%) are: abdominal pain, dizziness, euphoria, nausea, paranoid reaction, somnolence, thinking abnormal and vomiting. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Ascend Laboratories, LLC at 1-877-ASC-RX01 (1-877-272-7901) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.. oMost common adverse reactions (>=3%) are: abdominal pain, dizziness, euphoria, nausea, paranoid reaction, somnolence, thinking abnormal and vomiting. (6.1) 6.1 Clinical Trials Experience. Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The following serious adverse reactions are described below and elsewhere in the labeling. oNeuropsychiatric Adverse Reactions [see Warnings and Precautions (5.1)]oHemodynamic Instability [see Warnings and Precautions (5.2)]oSeizures [see Warnings and Precautions (5.3)]oParadoxical Nausea, Vomiting, and Abdominal Pain [see Warnings and Precautions (5.5)]Studies of AIDS-related weight loss included 157 patients receiving dronabinol capsules at dose of 2.5 mg twice daily and 67 receiving placebo. Studies of nausea and vomiting related to cancer chemotherapy included 317 patients receiving dronabinol capsules and 68 receiving placebo. In the tables below is summary of the adverse reactions in 474 patients exposed to dronabinol capsules in studies.Studies of different durations were combined by considering the first occurrence of events during the first 28 days.A cannabinoid dose-related high (easy laughing, elation and heightened awareness) has been reported by patients receiving dronabinol capsules in both the antiemetic (24%) and the lower dose appetite stimulant clinical trials (8%). The most frequently reported adverse experiences in patients with AIDS during placebo-controlled clinical trials involved the CNS and were reported by 33% of patients receiving dronabinol capsules. About 25% of patients reported CNS adverse reaction during the first weeks and about 4% reported such reaction each week for the next weeks thereafter. Common Adverse ReactionsThe following adverse reactions were reported in clinical trials at an incidence greater than 1%.System Organ ClassAdverse ReactionsGeneralAsthenia CardiovascularPalpitations, tachycardia, vasodilation/facial flush GastrointestinalAbdominal pain, nausea, vomiting Central Nervous System Dizziness, euphoria, paranoid reaction, somnolence, thinking abnormal, amnesia, anxiety/nervousness, ataxia, confusion, depersonalization, hallucination Actual incidence 3% to 10% Less Common Adverse ReactionsThe following adverse reactions were reported in clinical trials at an incidence less than or equal to 1%.System Organ ClassAdverse ReactionsGeneralChills, headache, malaise CardiovascularHypotension, conjunctival injection [see Clinical Pharmacology (12.2)] GastrointestinalDiarrhea, fecal incontinence, anorexia, hepatic enzyme elevation MusculoskeletalMyalgias Central Nervous System Depression, nightmares, speech difficulties, tinnitus RespiratoryCough, rhinitis, sinusitis SkinFlushing, sweating SensoryVision difficulties oNeuropsychiatric Adverse Reactions [see Warnings and Precautions (5.1)]. oHemodynamic Instability [see Warnings and Precautions (5.2)]. oSeizures [see Warnings and Precautions (5.3)]. oParadoxical Nausea, Vomiting, and Abdominal Pain [see Warnings and Precautions (5.5)]. 6.2 Postmarketing Experience. The following adverse reactions have been identified during post-approval use of dronabinol capsules. Because these reactions are reported voluntarily from population of uncertain size, it is not always possible to reliably estimate their frequency or establish causal relationship to drug exposure. General disorders and administration site conditions: Fatigue Hypersensitivity reactions: Lip swelling, hives, disseminated rash, oral lesions, skin burning, flushing, throat tightness [see Contraindications (4)] Injury, poisoning and procedural complications: Fall [see Use in Specific Populations (8.5)] Nervous system disorders: Seizures [see Warnings and Precautions (5.3)], disorientation, movement disorder, loss of consciousnessPsychiatric disorders: Delirium, insomnia, panic attack Vascular disorders: Syncope [see Warnings and Precautions (5.2)].

CARCINOGENESIS & MUTAGENESIS & IMPAIRMENT OF FERTILITY SECTION.


13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility. In 2-year carcinogenicity studies, there was no evidence of carcinogenicity in rats at doses up to 50 mg/kg/day dronabinol (approximately 20 times the MRHD in AIDS patients on body surface area basis) or in mice at doses up to 500 mg/kg/day (approximately 100 times the MRHD in AIDS patients on body surface area basis). Dronabinol was not genotoxic in the Ames tests, the in vitro chromosomal aberration test in Chinese hamster ovary cells, and the in vivo mouse micronucleus test. However, dronabinol produced weak positive response in sister chromatid exchange test in Chinese hamster ovary cells. In long-term study (77 days) in rats, oral administration of dronabinol at doses of 30 to 150 mg/m2, equivalent to to 10 times the MRHD of 15 mg/m2/day in AIDS patients or 0.3 to 1.5 times the MRHD of 90 mg/m2/day in cancer patients, reduced ventral prostate, seminal vesicle and epididymal weights and caused decrease in seminal fluid volume. Decreases in spermatogenesis, number of developing germ cells, and number of Leydig cells in the testis were also observed. However, sperm count, mating success, and testosterone levels were not affected. The significance of these animal findings in humans is not known.

CLINICAL PHARMACOLOGY SECTION.


12 CLINICAL PHARMACOLOGY. 12.1 Mechanism of Action. Dronabinol is an orally active cannabinoid which has complex effects on the CNS, including central sympathomimetic activity. Cannabinoid receptors have been discovered in neural tissues. These receptors may play role in mediating the effects of dronabinol.. 12.2 Pharmacodynamics. Effects on the Cardiovascular SystemDronabinol-induced sympathomimetic activity may result in tachycardia and/or conjunctival injection. Its effects on blood pressure are inconsistent, but subjects have experienced orthostatic hypotension and/or syncope upon abrupt standing [see Warnings and Precautions (5.2)]. Effects on the Central Nervous SystemDronabinol also demonstrates reversible effects on appetite, mood, cognition, memory, and perception. These phenomena appear to be dose-related, increasing in frequency with higher dosages, and subject to great inter-patient variability. After oral administration, dronabinol has an onset of action of approximately 0.5 to hours and peak effect at to hours. Duration of action for psychoactive effects is to hours, but the appetite stimulant effect of dronabinol may continue for 24 hours or longer after administration. Tachyphylaxis and tolerance develop to some of the pharmacologic effects of dronabinol with chronic use, suggesting an indirect effect on sympathetic neurons. In study of the pharmacodynamics of chronic dronabinol exposure, healthy male subjects (N 12) received 210 mg per day of dronabinol capsules, administered orally in divided doses, for 16 days. An initial tachycardia induced by dronabinol was replaced successively by normal sinus rhythm and then bradycardia. decrease in supine blood pressure, made worse by standing, was also observed initially. These subjects developed tolerance to the cardiovascular and subjective adverse CNS effects of dronabinol within 12 days of treatment initiation. Tachyphylaxis and tolerance do not appear to develop to the appetite stimulant effect of dronabinol capsules. In clinical studies involving AIDS patients, the appetite stimulant effect of dronabinol capsules was sustained for up to five months at dosages ranging from 2.5 mg to 20 mg per day.. 12.3 Pharmacokinetics. AbsorptionDronabinol (delta-9-THC) is almost completely absorbed (90 to 95%) after single oral doses. Due to the combined effects of first pass hepatic metabolism and high lipid solubility, only 10 to 20% of the administered dose reaches the systemic circulation. Concentrations of both parent drug and its major active metabolite (11-hydroxy-delta-9-THC) peak at approximately 0.5 to hours after oral dosing and decline over several days. The pharmacokinetics of dronabinol after single doses (2.5, 5, and 10 mg) and multiple doses (2.5, 5, and 10 mg given twice day) have been studied in healthy subjects. Summary of Multiple-Dose Pharmacokinetic Parameters of Dronabinol in Healthy Subjects (n=34; 20-45 years) under Fasted Conditions Mean (SD) PK Parameter ValuesTwice Daily DoseCmax ng/mLMedian Tmax (range), hrAUC(0-12) ngohr/mL2.5 mg 1.32 (0.62) 1.00 (0.50-4.00) 2.88 (1.57) mg 2.96 (1.81) 2.50 (0.50-4.00) 6.16 (1.85) 10 mg 7.88 (4.54) 1.50 (0.50-3.50) 15.2 (5.52) Cmax: maximum observed plasma concentration; Tmax: time to maximum observed plasma concentration; AUC(0-12): area under the plasma concentration-time curve from to 12 hours. slight increase in dose proportionality on mean Cmax and AUC(0-12) of dronabinol was observed with increasing dose over the dose range studied.Effect of Food: In published study, the effect of food on the pharmacokinetics of dronabinol was studied by concomitant dosing of dronabinol capsules with high-fat (59 grams of fat, approximately 50% of total caloric content of the meal), high calorie meal (approximately 950 calories). An appreciable food effect was observed, resulting in 4-hour delay in mean Tmax and 2.9-fold increase in total exposure (AUCinf), but Cmax was not significantly changed [see Dosage and Administration (2.2)]. DistributionDronabinol has an apparent volume of distribution of approximately 10 L/kg, because of its lipid solubility. The plasma protein binding of dronabinol and its metabolites is approximately 97% [see Drug Interactions (7.4)]. EliminationThe pharmacokinetics of dronabinol can be described using two compartment model with an initial (alpha) half-life of about hours and terminal (beta) half-life of 25 to 36 hours. Values for clearance average about 0.2 L/kg-hr, but are highly variable due to the complexity of cannabinoid distribution. MetabolismDronabinol undergoes extensive first-pass hepatic metabolism, primarily by hydroxylation, yielding both active and inactive metabolites. Dronabinol and its principal active metabolite, 11-hydroxy-delta-9-THC, are present in approximately equal concentrations in plasma. Published in vitro data indicates that CYP2C9 and CYP3A4 are the primary enzymes in the metabolism of dronabinol. CYP2C9 appears to be the enzyme responsible for the formation of the primary active metabolite [see Clinical Pharmacology (12.5)]. ExcretionDronabinol and its biotransformation products are excreted in both feces and urine. Biliary excretion is the major route of elimination with about half of radio-labeled oral dose being recovered from the feces within 72 hours as contrasted with 10 to 15% recovered from urine. Less than 5% of an oral dose is recovered unchanged in the feces.Due to its re-distribution, dronabinol and its metabolites may be excreted at low levels for prolonged periods of time. Following single dose administration, low levels of dronabinol metabolites have been detected for more than weeks in the urine and feces.In study of dronabinol capsules involving AIDS patients, urinary cannabinoid/creatinine concentration ratios were studied bi-weekly over six week period. The urinary cannabinoid/creatinine ratio was closely correlated with dose. No increase in the cannabinoid/creatinine ratio was observed after the first two weeks of treatment, indicating that steady-state cannabinoid levels had been reached. This conclusion is consistent with predictions based on the observed terminal half-life of dronabinol.Drug Interaction StudiesFormal drug-drug interaction studies have not been conducted with dronabinol. The enzyme inhibition and induction potential of dronabinol and its active metabolite are not completely understood. Published data showed an increase in the elimination half-life of pentobarbital by hours when concomitantly dosed with dronabinol [see Warnings and Precautions (5.1)]. 12.5 Pharmacogenomics. Published data indicate potentially 2-to 3-fold higher dronabinol exposure in individuals carrying genetic variants associated with diminished CYP2C9 function.

CLINICAL STUDIES SECTION.


14 CLINICAL STUDIES. The effectiveness of dronabinol capsules has been established based on studies for the treatment of anorexia associated with weight loss in patients with AIDS and nausea and vomiting associated with cancer chemotherapy in patients who have failed to respond adequately to conventional antiemetic treatments.. 14.1 Appetite Stimulation. The appetite stimulant effect of dronabinol capsules in the treatment of AIDS-related anorexia associated with weight loss was studied in randomized, double-blind, placebo-controlled study involving 139 patients. The initial dosage of dronabinol capsules in all patients was mg/day, administered in doses of 2.5 mg one hour before lunch and one hour before dinner. In pilot studies, early morning administration of dronabinol capsules appeared to have been associated with an increased frequency of adverse experiences, as compared to dosing later in the day. The effect of dronabinol capsules on appetite, weight, mood, and nausea was measured at scheduled intervals during the six-week treatment period. Side effects (feeling high, dizziness, confusion, somnolence) occurred in 13 of 72 patients (18%) at this dosage level and the dosage was reduced to 2.5 mg/day, administered as single dose at supper or bedtime.Of the 112 patients that completed at least visits in the randomized, double-blind, placebo-controlled study, 99 patients had appetite data at 4-weeks (50 received dronabinol capsules and 49 received placebo) and 91 patients had appetite data at 6-weeks (46 received dronabinol capsules and 45 received placebo). statistically significant difference between dronabinol capsules and placebo was seen in appetite as measured by the visual analog scale at weeks and (see figure). Trends toward improved body weight and mood, and decreases in nausea were also seen. After completing the 6-week study, patients were allowed to continue treatment with dronabinol capsules in an open-label study, in which there was sustained improvement in appetite.. dronabinol-fig.jpg.

CONTRAINDICATIONS SECTION.


4 CONTRAINDICATIONS. Dronabinol capsules are contraindicated in patients with history of hypersensitivity reaction to dronabinol or sesame oil. Reported hypersensitivity reactions to dronabinol capsules include lip swelling, hives, disseminated rash, oral lesions, skin burning, flushing and throat tightness [see Adverse Reactions (6.2)]. oHistory of hypersensitivity reaction to dronabinol or sesame oil (4). oHistory of hypersensitivity reaction to dronabinol or sesame oil (4).

CONTROLLED SUBSTANCE SECTION.


9.1 Controlled Substance. Dronabinol capsules are Schedule III controlled substance.

DEPENDENCE SECTION.


9.3 Dependence. Physical dependence is state that develops as result of physiological adaptation in response to repeated drug use. Physical dependence manifests by drug class-specific withdrawal symptoms after abrupt discontinuation or significant dose reduction of drug. The appearance of withdrawal syndrome when administration of the drug is terminated is the only actual evidence of physical dependence. Physical dependence can develop during chronic therapy with dronabinol capsules, and develops after chronic abuse of marijuana. withdrawal syndrome was reported after the abrupt discontinuation of dronabinol in subjects receiving dosages of 210 mg per day for 12 to 16 consecutive days. Within 12 hours after discontinuation, subjects manifested symptoms such as irritability, insomnia, and restlessness. By approximately 24 hours post-dronabinol discontinuation, withdrawal symptoms intensified to include hot flashes, sweating, rhinorrhea, loose stools, hiccoughs, and anorexia. These withdrawal symptoms gradually dissipated over the next 48 hours. Electroencephalographic changes consistent with the effects of drug withdrawal (hyperexcitation) were recorded in patients after abrupt dechallenge. Patients also complained of disturbed sleep for several weeks after discontinuing therapy with high dosages of dronabinol.

DESCRIPTION SECTION.


11 DESCRIPTION. Dronabinol is cannabinoid designated chemically as (6aR,10aR)-6a,7,8,10a-Tetrahydro-6,6,9-trimethyl-3-pentyl-6H-dibenzo[b,d]-pyran-1-ol. Dronabinol has the following empirical and structural formulas:C21H30O2 (molecular weight 314.46) Dronabinol, the active ingredient in dronabinol capsules, USP, is synthetic delta-9-tetrahydrocannabinol (delta-9-THC). Dronabinol is light yellow resinous oil that is sticky at room temperature and hardens upon refrigeration. Dronabinol is insoluble in water and is formulated in sesame oil. It has pKa of 10.6 and an octanol-water partition coefficient: 6,000:1 at pH 7. Each dronabinol capsule strength is formulated with the following inactive ingredients: 2.5 mg capsule contains gelatin, glycerin, sesame oil, and titanium dioxide; mg capsule contains iron oxide red and iron oxide black, gelatin, glycerin, sesame oil, and titanium dioxide; 10 mg capsule contains iron oxide red and iron oxide yellow, gelatin, glycerin, sesame oil, and titanium dioxide.. dronabinol-str.jpg.

DOSAGE & ADMINISTRATION SECTION.


2 DOSAGE AND ADMINISTRATION. Anorexia Associated with Weight Loss in Adult Patients with AIDS (2.1):oThe recommended adult starting dosage is 2.5 mg orally twice daily, one hour before lunch and dinner.oSee the full prescribing information for dosage titration to manage adverse reactions and to achieve desired therapeutic effect. Nausea and Vomiting Associated with Chemotherapy in Adult Patients Who Failed Conventional Antiemetics (2.2):oThe recommended starting dosage is mg/m2, administered to hours prior to the administration of chemotherapy, then every to hours after chemotherapy, for total of to doses per day. Administer the first dose on an empty stomach at least 30 minutes prior to eating; subsequent doses can be taken without regard to meals. oSee the full prescribing information for dosage titration to manage adverse reactions and to achieve desired therapeutic effect.. oThe recommended adult starting dosage is 2.5 mg orally twice daily, one hour before lunch and dinner.. oSee the full prescribing information for dosage titration to manage adverse reactions and to achieve desired therapeutic effect. oThe recommended starting dosage is mg/m2, administered to hours prior to the administration of chemotherapy, then every to hours after chemotherapy, for total of to doses per day. Administer the first dose on an empty stomach at least 30 minutes prior to eating; subsequent doses can be taken without regard to meals. oSee the full prescribing information for dosage titration to manage adverse reactions and to achieve desired therapeutic effect.. 2.1 Anorexia Associated with Weight Loss in Adult Patients with AIDS. Starting DosageThe recommended adult starting dosage of dronabinol capsules is 2.5 mg orally twice daily, one hour before lunch and dinner. In elderly patients or patients unable to tolerate 2.5 mg twice daily, consider initiating dronabinol capsules at 2.5 mg once daily one hour before dinner or at bedtime to reduce the risk of central nervous system (CNS) symptoms [see Use in Specific Populations (8.5)]. Dosing later in the day may reduce the frequency of CNS adverse reactions. CNS adverse reactions are dose-related [see Warnings and Precautions (5.1)]; therefore monitor patients and reduce the dosage as needed. If CNS adverse reactions of feeling high, dizziness, confusion, and somnolence occur, they usually resolve in to days and usually do not require dosage reduction. If CNS adverse reactions are severe or persistent, reduce the dosage to 2.5 mg in the evening or at bedtime. Dosage TitrationIf tolerated and further therapeutic effect is desired, the dosage may be increased gradually to 2.5 mg one hour before lunch and mg one hour before dinner. Increase the dose of dronabinol capsules gradually in order to reduce the frequency of dose-related adverse reactions [see Warnings and Precautions (5.1)]. Most patients respond to 2.5 mg twice daily, but the dose may be further increased to mg one hour before lunch and mg one hour before dinner, as tolerated to achieve therapeutic effect. Maximum Dosage: 10 mg twice daily.. 2.2 Nausea and Vomiting Associated with Cancer Chemotherapy in Adult Patients Who Failed Conventional Antiemetics. Starting DosageThe recommended starting dosage of dronabinol capsules is mg/m2, orally administered to hours prior to the administration of chemotherapy and then every to hours after chemotherapy, for total of to doses per day. In elderly patients, consider initiating dronabinol capsules at 2.5 mg/m2 once daily to hours prior to chemotherapy to reduce the risk of CNS symptoms [see Use in Specific Populations (8.5)]. Administer the first dose on an empty stomach at least 30 minutes before eating. Subsequent doses can be taken without regard to meals [see Clinical Pharmacology (12.3)]. The timing of dosing in relation to meal times should be kept consistent for each chemotherapy cycle, once the dosage has been determined from the titration process. Dosage TitrationThe dosage can be titrated to clinical response during chemotherapy cycle or subsequent cycles, based upon initial response, as tolerated to achieve clinical effect, in increments of 2.5 mg/m2. The maximum dosage is 15 mg/m2 per dose for to doses per day. Adverse reactions are dose-related and psychiatric symptoms increase significantly at the maximum dosage [see Warnings and Precautions (5.1)]. Monitor patients for adverse reactions and consider decreasing the dose to 2.5 mg once daily to hours prior to chemotherapy to reduce the risk of CNS adverse reactions.

DOSAGE FORMS & STRENGTHS SECTION.


3 DOSAGE FORMS AND STRENGTHS. Dronabinol capsules are supplied as round, soft gelatin capsules for oral use as follows: o2.5 mg white capsules (Identified M2)o5 mg dark brown capsules (Identified M5)o10 mg orange capsules (Identified MX). o2.5 mg white capsules (Identified M2). o5 mg dark brown capsules (Identified M5). o10 mg orange capsules (Identified MX). oCapsules: 2.5 mg, mg, 10 mg (3). oCapsules: 2.5 mg, mg, 10 mg (3).

DRUG ABUSE AND DEPENDENCE SECTION.


9 DRUG ABUSE AND DEPENDENCE. 9.1 Controlled Substance. Dronabinol capsules are Schedule III controlled substance.. 9.2 Abuse. Dronabinol capsules contains dronabinol, the main psychoactive component in marijuana. Ingestion of high doses of dronabinol increases the risk of psychiatric adverse reactions if abused or misused, while continued administration can lead to addiction. Psychiatric adverse reactions may include psychosis, hallucinations, depersonalization, mood alteration, and paranoia. In an open-label study in patients with AIDS who received dronabinol capsules for up to five months, no abuse, diversion or systematic change in personality or social functioning were observed despite the inclusion of substantial number of patients with past history of drug abuse. Patients should be instructed to keep dronabinol capsules in secure place out of reach of others for whom the medication has not been prescribed.. 9.3 Dependence. Physical dependence is state that develops as result of physiological adaptation in response to repeated drug use. Physical dependence manifests by drug class-specific withdrawal symptoms after abrupt discontinuation or significant dose reduction of drug. The appearance of withdrawal syndrome when administration of the drug is terminated is the only actual evidence of physical dependence. Physical dependence can develop during chronic therapy with dronabinol capsules, and develops after chronic abuse of marijuana. withdrawal syndrome was reported after the abrupt discontinuation of dronabinol in subjects receiving dosages of 210 mg per day for 12 to 16 consecutive days. Within 12 hours after discontinuation, subjects manifested symptoms such as irritability, insomnia, and restlessness. By approximately 24 hours post-dronabinol discontinuation, withdrawal symptoms intensified to include hot flashes, sweating, rhinorrhea, loose stools, hiccoughs, and anorexia. These withdrawal symptoms gradually dissipated over the next 48 hours. Electroencephalographic changes consistent with the effects of drug withdrawal (hyperexcitation) were recorded in patients after abrupt dechallenge. Patients also complained of disturbed sleep for several weeks after discontinuing therapy with high dosages of dronabinol.

DRUG INTERACTIONS SECTION.


7 DRUG INTERACTIONS. oInhibitors and inducers of CYP2C9 and CYP3A4: May alter dronabinol systemic exposure; monitor for potential dronabinol-related adverse reactions or loss of efficacy. (7.3) oHighly protein-bound drugs: Potential for displacement of other drugs from plasma proteins; monitor for adverse reactions to concomitant highly protein-bound drugs and narrow therapeutic index drugs (e.g., warfarin, cyclosporine, amphotericin B) when initiating or increasing the dosage of dronabinol capsules. (7.4). oInhibitors and inducers of CYP2C9 and CYP3A4: May alter dronabinol systemic exposure; monitor for potential dronabinol-related adverse reactions or loss of efficacy. (7.3) oHighly protein-bound drugs: Potential for displacement of other drugs from plasma proteins; monitor for adverse reactions to concomitant highly protein-bound drugs and narrow therapeutic index drugs (e.g., warfarin, cyclosporine, amphotericin B) when initiating or increasing the dosage of dronabinol capsules. (7.4). 7.1 Additive CNS Effects. Additive CNS effects (e.g., dizziness, confusion, sedation, somnolence) may occur when dronabinol capsules are taken concomitantly with drugs that have similar effects on the central nervous system such as CNS depressants [see Warnings and Precautions (5.1)]. 7.2 Additive Cardiac Effects. Additive cardiac effects (e.g., hypotension, hypertension, syncope, tachycardia) may occur when dronabinol capsules are taken concomitantly with drugs that have similar effects on the cardiovascular system [see Warnings and Precautions (5.2)]. 7.3 Effect of Other Drugs on Dronabinol. Dronabinol is primarily metabolized by CYP2C9 and CYP3A4 enzymes based on published in vitro studies. Inhibitors of these enzymes may increase, while inducers may decrease, the systemic exposure of dronabinol and/or its active metabolite resulting in an increase in dronabinol-related adverse reactions or loss of efficacy of dronabinol capsules. Monitor for potentially increased dronabinol-related adverse reactions when dronabinol capsules are co-administered with inhibitors of CYP2C9 (e.g., amiodarone, fluconazole) and inhibitors of CYP3A4 enzymes (e.g., ketoconazole, itraconazole, clarithromycin, ritonavir, erythromycin, grapefruit juice).. 7.4 Highly Protein-Bound Drugs. Dronabinol is highly bound to plasma proteins, and therefore, might displace and increase the free fraction of other concomitantly administered protein-bound drugs. Although this displacement has not been confirmed in vivo, monitor patients for increased adverse reactions to narrow therapeutic index drugs that are highly protein-bound (e.g., warfarin, cyclosporine, amphotericin B) when initiating treatment or increasing the dosage of dronabinol capsules.

WARNINGS AND PRECAUTIONS SECTION.


5 WARNINGS AND PRECAUTIONS. oNeuropsychiatric Adverse Reactions: May cause psychiatric and cognitive effects and impair mental and/or physical abilities. Avoid use in patients with psychiatric history. Monitor for symptoms and avoid concomitant use of drugs with similar effects. Inform patients not to operate motor vehicles or other dangerous machinery until they are reasonably certain that dronabinol capsules do not affect them adversely. (5.1) oHemodynamic Instability: Patients with cardiac disorders may experience hypotension, hypertension, syncope or tachycardia. Avoid concomitant use of drugs with similar effects and monitor for hemodynamic changes after initiating or increasing the dosage of dronabinol capsules. (5.2) oSeizures and Seizure-like Activity: Weigh the potential risk versus benefits before prescribing dronabinol capsules to patients with history of seizures, including those requiring anti-epileptic medication or with other factors that lower the seizure threshold. Monitor patients and discontinue if seizures occur. (5.3) oMultiple Substance Abuse: Assess risk for abuse or misuse in patients with history of substance abuse or dependence, prior to prescribing dronabinol capsules and monitor for the development of associated behaviors or conditions. (5.4) oParadoxical Nausea, Vomiting, or Abdominal Pain: Consider dose reduction or discontinuation, if worsening of symptoms while on treatment. (5.5). oNeuropsychiatric Adverse Reactions: May cause psychiatric and cognitive effects and impair mental and/or physical abilities. Avoid use in patients with psychiatric history. Monitor for symptoms and avoid concomitant use of drugs with similar effects. Inform patients not to operate motor vehicles or other dangerous machinery until they are reasonably certain that dronabinol capsules do not affect them adversely. (5.1) oHemodynamic Instability: Patients with cardiac disorders may experience hypotension, hypertension, syncope or tachycardia. Avoid concomitant use of drugs with similar effects and monitor for hemodynamic changes after initiating or increasing the dosage of dronabinol capsules. (5.2) oSeizures and Seizure-like Activity: Weigh the potential risk versus benefits before prescribing dronabinol capsules to patients with history of seizures, including those requiring anti-epileptic medication or with other factors that lower the seizure threshold. Monitor patients and discontinue if seizures occur. (5.3) oMultiple Substance Abuse: Assess risk for abuse or misuse in patients with history of substance abuse or dependence, prior to prescribing dronabinol capsules and monitor for the development of associated behaviors or conditions. (5.4) oParadoxical Nausea, Vomiting, or Abdominal Pain: Consider dose reduction or discontinuation, if worsening of symptoms while on treatment. (5.5). 5.1 Neuropsychiatric Adverse Reactions. Psychiatric Adverse ReactionsDronabinol has been reported to exacerbate mania, depression, or schizophrenia. Significant CNS symptoms followed oral doses of 0.4 mg/kg (28 mg per 70 kg patient) of dronabinol capsules in antiemetic studies. Prior to initiating treatment with dronabinol capsules, screen patients for history of these illnesses. Avoid use in patients with psychiatric history or, if the drug cannot be avoided, monitor patients for new or worsening psychiatric symptoms during treatment. Also, avoid concomitant use with other drugs that are associated with similar psychiatric effects. Cognitive Adverse ReactionsUse of dronabinol capsules has been associated with cognitive impairment and altered mental state. Reduce the dose of dronabinol capsules or discontinue use of dronabinol capsules if signs or symptoms of cognitive impairment develop. Elderly patients may be more sensitive to the neurological and psychoactive effects of dronabinol capsules [see Use in Specific Populations (8.4, 8.5)]. Hazardous ActivitiesDronabinol capsules can cause and may impair the mental and/or physical abilities required for the performance of hazardous tasks such as driving motor vehicle or operating machinery. Concomitant use of other drugs that cause dizziness, confusion, sedation, or somnolence such as CNS depressants may increase this effect (e.g., barbiturates, benzodiazepines, ethanol, lithium, opioids, buspirone, scopolamine, antihistamines, tricyclic antidepressants, other anticholinergic agents, muscle relaxants). Inform patients not to operate motor vehicles or other dangerous machinery until they are reasonably certain that dronabinol capsules do not affect them adversely.. 5.2 Hemodynamic Instability. Patients may experience occasional hypotension, possible hypertension, syncope, or tachycardia while taking dronabinol capsules [see Clinical Pharmacology (12.2)]. Patients with cardiac disorders may be at higher risk. Avoid concomitant use of other drugs that are also associated with similar cardiac effects (e.g., amphetamines, other sympathomimetic agents, atropine, amoxapine, scopolamine, antihistamines, other anticholinergic agents, amitriptyline, desipramine, other tricyclic antidepressants). Monitor patients for changes in blood pressure, heart rate, and syncope after initiating or increasing the dosage of dronabinol capsules.. 5.3 Seizures. Seizure and seizure-like activity have been reported in patients receiving dronabinol. Weigh this potential risk against the benefits before prescribing dronabinol capsules to patients with history of seizures, including those receiving anti-epileptic medication or with other factors that can lower the seizure threshold. Monitor patients with history of seizure disorders for worsened seizure control during dronabinol capsules therapy. If seizure occurs, advise patients to discontinue dronabinol capsules and contact healthcare provider immediately.. 5.4 Multiple Substance Abuse. Patients with history of substance abuse or dependence, including marijuana or alcohol, may be more likely to abuse dronabinol capsules as well. Assess each patients risk for abuse or misuse prior to prescribing dronabinol capsules and monitor patients with history of substance abuse during treatment with dronabinol capsules for the development of these behaviors or conditions.. 5.5 Paradoxical Nausea, Vomiting, or Abdominal Pain. Nausea, vomiting, or abdominal pain can occur during treatment with synthetic delta-9-tetrahydrocannabinol (delta-9-THC), the active ingredient in dronabinol capsules. In some cases, these adverse reactions were severe (e.g., dehydration, electrolyte abnormalities) and required dose reduction or drug discontinuation. Symptoms are similar to cannabinoid hyperemesis syndrome (CHS), which is described as cyclical events of abdominal pain, nausea, and vomiting in chronic, long-term users of delta-9-THC products. Because patients may not recognize these symptoms as abnormal, it is important to specifically ask patients or their caregivers about the development of worsening of nausea, vomiting, or abdominal pain while being treated with dronabinol capsules. Consider dose reduction or discontinuing dronabinol capsules if patient develops worsening nausea, vomiting, or abdominal pain while on treatment.