WARNINGS AND PRECAUTIONS SECTION.

5 WARNINGS AND PRECAUTIONS oFetal-neonatal toxicity with prolonged use: Administration beyond to days is not recommended and can lead to hypocalcemia and bone abnormalities (2.2, 5.1)oRisk of magnesium toxicity: Monitor magnesium concentrations and clinical signs of magnesium toxicity including respiratory depression, an injectable calcium salt should be immediately available to counteract hazards, for significant toxicity stop Magnesium Sulfate in 5% Dextrose Injection (5.2)oRisk of elevated blood glucose: Solutions containing dextrose should be used with caution in patients with known prediabetes or diabetes mellitus (5.3) oCo-administration with unapproved tocolytics: Do not use concomitantly with beta adrenergic agents such as terbutaline and calcium channel blockers such as nifedipine (5.4)oAluminum toxicity: Aluminum may reach toxic concentrations with prolonged parenteral administration in patients with renal impairment (5.5)oExacerbation of Myasthenia Gravis: Use is contraindicated because use in patients with underlying myasthenia gravis can precipitate myasthenic crisis (5.6). oFetal-neonatal toxicity with prolonged use: Administration beyond to days is not recommended and can lead to hypocalcemia and bone abnormalities (2.2, 5.1). oRisk of magnesium toxicity: Monitor magnesium concentrations and clinical signs of magnesium toxicity including respiratory depression, an injectable calcium salt should be immediately available to counteract hazards, for significant toxicity stop Magnesium Sulfate in 5% Dextrose Injection (5.2). oRisk of elevated blood glucose: Solutions containing dextrose should be used with caution in patients with known prediabetes or diabetes mellitus (5.3) oCo-administration with unapproved tocolytics: Do not use concomitantly with beta adrenergic agents such as terbutaline and calcium channel blockers such as nifedipine (5.4). oAluminum toxicity: Aluminum may reach toxic concentrations with prolonged parenteral administration in patients with renal impairment (5.5). oExacerbation of Myasthenia Gravis: Use is contraindicated because use in patients with underlying myasthenia gravis can precipitate myasthenic crisis (5.6). 5.1 Fetal-Neonatal Toxicity with Prolonged Use Continuous administration of magnesium sulfate beyond to days in pregnant women can lead to hypocalcemia and bone abnormalities in the developing fetus, including skeletal demineralization and osteopenia. In addition, cases of neonatal fracture have been reported. Neonates of women receiving Magnesium Sulfate in 5% Dextrose Injection (especially with prolonged maternal use) are at risk for magnesium toxicity including hyporeflexia, hypotonia, and respiratory depression. There is one reported case of neonatal death as the result of magnesium toxicity after transplacental exposure. The shortest duration of magnesium sulfate treatment that can lead to fetal harm is not known. Administration of Magnesium Sulfate in 5% Dextrose Injection beyond to days is not recommended.. 5.2 Risk of Magnesium Toxicity Patients receiving Magnesium Sulfate in 5% Dextrose Injection are at risk for magnesium toxicity including respiratory depression, acute renal failure and rarely, pulmonary edema. Monitor clinical signs of magnesium toxicity (for example, facial edema, diminished strength of deep tendon reflexes, respiratory depression) and magnesium concentrations during infusions of Magnesium Sulfate in 5% Dextrose Injection. Clinical indications of safe dosage regimen include the presence of the patellar reflex (knee jerk) and absence of respiratory depression (approximately 16 breaths or more per minute). Serum magnesium concentrations usually sufficient to control convulsions range from to mg per 100 mL (2.5 to mEq per liter). The strength of the deep tendon reflexes begins to diminish when serum magnesium concentrations exceed mEq per liter. Reflexes may be absent at concentration of 10 mEq per liter, at which point respiratory paralysis is potential hazard. An injectable calcium salt should be immediately available to counteract the potential hazards of magnesium toxicity in patients with preeclampsia and eclampsia. If there is significant magnesium toxicity, stop the Magnesium Sulfate in 5% Dextrose Injection infusion and recheck serum magnesium concentration. Patients with renal impairment are at greater risk of magnesium toxicity because magnesium is excreted by the body solely by the kidneys [see Use in Specific Populations (8.6)]. Urine output should be maintained at level of 100 mL per hours. Monitoring serum magnesium levels and the patients clinical status is essential to avoid the consequences of overdosage in patients with preeclampsia. Discontinuation of the magnesium infusion is recommended when urine output is less than 100 mL every hours to avoid magnesium toxicity, especially if serum creatinine is increasing progressively.. 5.3 Risk of Elevated Blood Glucose Solutions containing dextrose should be used with caution in patients with known prediabetes or diabetes mellitus given the risk of elevated blood glucose.. 5.4 Co-administration with Unapproved Tocolytics Do not use Magnesium Sulfate in 5% Dextrose Injection with unapproved tocolytics (e.g., beta adrenergic agents such as terbutaline, or with calcium channel blockers such as nifedipine). Serious adverse events including pulmonary edema and hypotension have occurred [see Drug Interactions (7)].. 5.5 Aluminum Toxicity Magnesium Sulfate in 5% Dextrose Injection contains aluminum that may be toxic (Magnesium Sulfate in 5% Dextrose Injection contains less than 25 mcg/L of aluminum). Aluminum may reach toxic concentrations with prolonged parenteral administration in patients with renal impairment. Patients with renal impairment who receive parenteral concentrations of aluminum at greater than to mcg/kg/day, accumulate aluminum at concentrations associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.. 5.6 Exacerbation of Myasthenia Gravis Magnesium Sulfate in 5% Dextrose Injection is contraindicated in patients with known myasthenia gravis. Use of magnesium sulfate in patients with underlying myasthenia gravis can precipitate myasthenic crisis. Myasthenic crisis is life-threatening condition characterized by neuromuscular respiratory failure. Symptoms of myasthenic crisis may include difficulty swallowing, ptosis, facial droop, weakness and/or difficulty breathing that may require intubation. If myasthenic crisis is suspected, discontinue use of Magnesium Sulfate in 5% Dextrose Injection immediately. Secure the patients airway. Consider intensive care unit admission and elective intubation, if respiratory failure is anticipated. Once the airway is secure, confirm the diagnosis. Therapies include plasmapheresis and plasma exchange or intravenous immunoglobulin (IVIG) and immunomodulating therapy in addition to high-dose glucocorticoids.

ADVERSE REACTIONS SECTION.

6 ADVERSE REACTIONS The following adverse reactions have been identified in clinical studies or postmarketing reports. 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. Cardiovascular:hypotension, circulatory collapse, cardiac depression including bradycardiaCentral Nervous System:central nervous system depression leading to respiratory paralysis, visual disturbances, flushing, sweating, hypothermiaMetabolic:hypocalcemia with signs of tetany, hypermagnesemiaNeurologic:lethargy, sedation, somnolence, myasthenic crisisNeuromuscular:depressed deep tendon reflexes, flaccid paralysisPulmonary:decreased respiratory rate, pulmonary edema. The most common adverse reactions are flushing, sweating, hypotension, depressed reflexes, flaccid paralysis, hypothermia, circulatory collapse, cardiac and central nervous system (CNS) depression proceeding to respiratory paralysis and hypocalcemia. Bradycardia, pulmonary edema, decreased respiratory rate, lethargy, sedation, somnolence, visual disturbances, and hypermagnesemia are also reported (6) To report SUSPECTED ADVERSE REACTIONS, contact Baxter Healthcare Corporation at 1-866-888-2472 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

CARCINOGENESIS & MUTAGENESIS & IMPAIRMENT OF FERTILITY SECTION.

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Studies with Magnesium Sulfate in 5% Dextrose Injection have not been performed to evaluate carcinogenic potential, mutagenic potential or effects on fertility.

CLINICAL PHARMACOLOGY SECTION.

12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Magnesium prevents seizures in patients with preeclampsia and controls seizures in patients with eclampsia by blocking neuromuscular transmission and decreasing the amount of acetylcholine liberated at the end plate by the motor nerve impulse. Magnesium has depressant effect on the central nervous system [see Drug Interactions (7)]. Magnesium acts peripherally to produce vasodilation.. 12.2 Pharmacodynamics With intravenous administration of magnesium sulfate the onset of anticonvulsant action is immediate and lasts about 30 minutes. The estimated magnesium concentration (above baseline) required to elicit half-maximum effect (EC50) on systolic and diastolic blood pressure in pregnant women with preeclampsia that received intravenous magnesium sulfate therapy was reported to be 1.5 and 1.8 mEq per liter (1.9 and 2.2 mg per dL), respectively, in published study. Effective anticonvulsant serum concentrations range from 2.5 to 7.5 mEq per liter.Drug Interaction Studies The following information is based upon published case reports and clinical studies that could not be confirmed by an adequately controlled study, but still warrant consideration given the potential risks involved [see Drug Interactions (7)]. Neuromuscular Blocking Agents: Potentiation and prolongation of neuromuscular blockade requiring modification of the neuromuscular blocking agent dosage and/or increased reversal agent requirements were reported in preeclamptic women who received magnesium sulfate treatment who underwent subsequent surgery (for example, caesarian section) with anesthesia that included either depolarizing (d-tubocurarine, succinylcholine) or nondepolarizing neuromuscular blocking agent (vecuronium, rocuronium). Narcotics and/or Propofol: Potentiation and prolongation of analgesic and/or sedative effects as well as reduced requirement for an intravenous narcotic (fentanyl, sufentanil, tramadol), intrathecal narcotic (fentanyl), and/or intravenous propofol was reported in magnesium sulfate treated patients who required surgery or intensive care that also included narcotic and/or propofol therapy. Dihydropyridine Calcium Channel Blockers: An exaggerated hypotensive response (blood pressure 80-93/49-60 mm Hg) was reported in preeclamptic women who received oral nifedipine in addition to magnesium sulfate treatment. Blood pressure returned to previous levels within approximately 30 minutes with supportive care.. 12.3 Pharmacokinetics Distribution Approximately to 2% of total body magnesium is located in the extracellular fluid space. Magnesium is 30% bound to albumin. EliminationThe average half-life and systemic clearance of magnesium sulfate in preeclamptic women is approximately to hours and to liters per hour, respectively. Excretion: Magnesium is excreted solely by the kidney at rate proportional to the serum concentration and glomerular filtration. Specific Populations Patients with Renal Impairment: Plasma magnesium concentrations of to 12.3 mEq per liter (8.6 to 15.1 mg per dL) were reported in preeclamptic women with urine output less than 100 mL per hours that received 20 grams of magnesium sulfate intravenously over to hours in published study [see Dosage and Administration (2.3) and Use in Specific Populations (8.6)].

CONTRAINDICATIONS SECTION.

4 CONTRAINDICATIONS Magnesium Sulfate in 5% Dextrose Injection is contraindicated in patients: owith heart block or myocardial damage oin diabetic coma owith myasthenia gravis [see Warnings and Precautions (5.6)]. owith heart block or myocardial damage oin diabetic coma owith myasthenia gravis [see Warnings and Precautions (5.6)]. oHeart block or myocardial damage (4)oDiabetic coma (4)oMyasthenia gravis (4,5.6). oHeart block or myocardial damage (4). oDiabetic coma (4). oMyasthenia gravis (4,5.6).

DESCRIPTION SECTION.

11 DESCRIPTION Magnesium Sulfate in 5% Dextrose Injection, USP is sterile, nonpyrogenic solution of magnesium sulfate heptahydrate and dextrose in water for injection for intravenous use. Each 100 mL contains gram of magnesium sulfate heptahydrate and dextrose, hydrous grams in water for injection [see How Supplied/Storage and Handling (16)]. Magnesium Sulfate in 5% Dextrose Injection, USP may contain sulfuric acid and/or sodium hydroxide for pH adjustment. The pH is 4.5 (3.5 to 6.5). Magnesium Sulfate, USP heptahydrate is chemically known as sulfuric acid magnesium salt (1:1), heptahydrate and chemically designated MgSO4 7H2O, with molecular weight of 246.47. It occurs as colorless crystals or white powder freely soluble in water. Dextrose, USP is chemically designated D-glucose, monohydrate, hexose sugar freely soluble in water. The molecular formula is C6H12O6 H2O and the molecular weight is 198.17. It has the following structural formula:Water for Injection, USP is chemically designated H2O. Water can permeate from inside the Baxter VIAFLO flexible plastic container [composed of Polypropylene (PP), Polyamide (PA) and Polyethylene (PE)] into the overwrap [see Dosage and Administration (2.1)] but not in amounts sufficient to affect the solution significantly. Solutions in contact with the plastic container may leach out certain chemical components from the plastic in very small amounts; however, biological testing was supportive of the safety of the plastic container materials. Exposure to temperatures above 25C (77F) during transport and storage will lead to minor losses in moisture content. Higher temperatures lead to greater losses. It is unlikely that these minor losses will lead to clinically significant changes within the expiration period.. Dextrose Structural Formula.

DOSAGE & ADMINISTRATION SECTION.

2 DOSAGE AND ADMINISTRATION oAdminister via intravenous infusion pump (2.1)oRecommended loading dosage is to grams over 15 minutes followed by recommended maintenance dosage of to grams every hour; maximum recommended dosage is 30 to 40 grams over 24 hours (2.2)oObtain serum magnesium concentrations and assess clinical status to adjust the dose (2.2)oAdministration beyond to days is not recommended (2.2, 5.1)oIn patients with severe renal impairment and/or urine output less than 0.5 mL/kg/hour, administer 4 gram loading dose followed by maintenance dosage of gram every hour; do not exceed the maximum recommended dosage of 20 grams over 48 hours (2.3)oDo not administer Magnesium Sulfate in 5% Dextrose Injection with incompatible drugs through the same intravenous line, specifically with salicylates and alkali carbonates (2.4). oAdminister via intravenous infusion pump (2.1). oRecommended loading dosage is to grams over 15 minutes followed by recommended maintenance dosage of to grams every hour; maximum recommended dosage is 30 to 40 grams over 24 hours (2.2). oObtain serum magnesium concentrations and assess clinical status to adjust the dose (2.2). oAdministration beyond to days is not recommended (2.2, 5.1). oIn patients with severe renal impairment and/or urine output less than 0.5 mL/kg/hour, administer 4 gram loading dose followed by maintenance dosage of gram every hour; do not exceed the maximum recommended dosage of 20 grams over 48 hours (2.3). oDo not administer Magnesium Sulfate in 5% Dextrose Injection with incompatible drugs through the same intravenous line, specifically with salicylates and alkali carbonates (2.4). 2.1 Important Administration Instructions Magnesium Sulfate in 5% Dextrose Injection is: oA clear solution. Visually inspect Magnesium Sulfate in 5% Dextrose Injection for particulate matter and discoloration prior to administration. Do not administer unless solution is clear and colorless to slightly yellow. oFor intravenous use only oAdministered via intravenous infusion pump Magnesium Sulfate in 5% Dextrose Injection does not require dilution prior to intravenous administration. After removing the overwrap, check for minute leaks by squeezing the container fully. Do not administer Magnesium Sulfate in 5% Dextrose Injection if there is leak or there is greater than mL of water in the overwrap [see Description (11)]. Do not administer Magnesium Sulfate in 5% Dextrose Injection with incompatible drugs through the same intravenous line [see Dosage and Administration (2.4)]. Do not use Magnesium Sulfate in 5% Dextrose Injection in series connections.. oA clear solution. Visually inspect Magnesium Sulfate in 5% Dextrose Injection for particulate matter and discoloration prior to administration. Do not administer unless solution is clear and colorless to slightly yellow. oFor intravenous use only oAdministered via intravenous infusion pump 2.2 Recommended Dosage oThe recommended loading dosage of Magnesium Sulfate in 5% Dextrose Injection in patients with eclampsia or preeclampsia is to grams over 15 minutes followed by recommended maintenance dosage of to grams every hour. oObtain serum magnesium concentrations and assess clinical status to adjust the dosage. oIn patients with eclampsia, consider targeting the maintenance dosage to achieve serum magnesium concentrations of to mg per 100 mL (2.5 to mEq per liter). For patients with recurrent eclampsia, consider giving an additional gram intravenous bolus. oFor patients with eclampsia, therapy should continue until seizures cease. oThe maximum recommended dosage is 30 to 40 grams of magnesium sulfate over 24 hours. oAdministration of Magnesium Sulfate in 5% Dextrose Injection beyond to days is not recommended [see Warnings and Precautions (5.1)].. oThe recommended loading dosage of Magnesium Sulfate in 5% Dextrose Injection in patients with eclampsia or preeclampsia is to grams over 15 minutes followed by recommended maintenance dosage of to grams every hour. oObtain serum magnesium concentrations and assess clinical status to adjust the dosage. oIn patients with eclampsia, consider targeting the maintenance dosage to achieve serum magnesium concentrations of to mg per 100 mL (2.5 to mEq per liter). For patients with recurrent eclampsia, consider giving an additional gram intravenous bolus. oFor patients with eclampsia, therapy should continue until seizures cease. oThe maximum recommended dosage is 30 to 40 grams of magnesium sulfate over 24 hours. oAdministration of Magnesium Sulfate in 5% Dextrose Injection beyond to days is not recommended [see Warnings and Precautions (5.1)].. 2.3 Dosage in Patients with Severe Renal Impairment and/or Oliguria oIn patients with severe renal impairment and/or urine output less than 0.5 mL/kg/hour, initiate Magnesium Sulfate in 5% Dextrose Injection with 4 gram loading dose followed by maintenance dosage of gram every hour. oTitrate the magnesium sulfate maintenance dosage to maintain concentrations in the target range through frequent monitoring of magnesium concentrations and observation for clinical signs of magnesium toxicity (e.g., facial edema, diminished strength of deep tendon reflexes, respiratory depression). lower maintenance dosage requirement is likely in these patients. oDo not exceed the maximum recommended dosage of 20 grams of Magnesium Sulfate in 5% Dextrose Injection over 48 hours.. oIn patients with severe renal impairment and/or urine output less than 0.5 mL/kg/hour, initiate Magnesium Sulfate in 5% Dextrose Injection with 4 gram loading dose followed by maintenance dosage of gram every hour. oTitrate the magnesium sulfate maintenance dosage to maintain concentrations in the target range through frequent monitoring of magnesium concentrations and observation for clinical signs of magnesium toxicity (e.g., facial edema, diminished strength of deep tendon reflexes, respiratory depression). lower maintenance dosage requirement is likely in these patients. oDo not exceed the maximum recommended dosage of 20 grams of Magnesium Sulfate in 5% Dextrose Injection over 48 hours.. 2.4 Drug Incompatibilities Magnesium Sulfate in 5% Dextrose Injection is not compatible with administration of variety of solutions and forms precipitates of magnesium salts. Before using Magnesium Sulfate in 5% Dextrose Injection with another parenteral product, investigate potential incompatibilities. Incompatible products that should not be coadministered include salicylates and alkali carbonates.

DOSAGE FORMS & STRENGTHS SECTION.

3 DOSAGE FORMS AND STRENGTHS Magnesium Sulfate in 5% Dextrose Injection, USP is clear and colorless to slightly yellow solution supplied in single-dose bags: o0.01 grams per mL (1%): o100 mL bag containing gram of magnesium sulfate in 5% dextrose injection Each 100 mL contains grams of hydrous dextrose in Water for Injection.. o0.01 grams per mL (1%): o100 mL bag containing gram of magnesium sulfate in 5% dextrose injection o100 mL bag containing gram of magnesium sulfate in 5% dextrose injection Supplied in premixed single-dose bags: (3) o0.01 grams/mL (1%) in 100 mL bag containing gram of magnesium sulfate in 5% dextrose injection. o0.01 grams/mL (1%) in 100 mL bag containing gram of magnesium sulfate in 5% dextrose injection.

DRUG INTERACTIONS SECTION.

7 DRUG INTERACTIONS Table presents the potential clinical impact of medications that may be commonly administered concomitantly with Magnesium Sulfate in 5% Dextrose Injection in the clinical setting.Table : Potential Clinically Significant Drug Interactions with Magnesium Sulfate in 5% Dextrose InjectionNeuromuscular Blocking AgentsClinical Impact:oPotentiation and prolongation of neuromuscular blockade is possible with the concomitant use of magnesium sulfate and neuromuscular blocking agents [see Clinical Pharmacology (12.2)]. oThe underlying mechanism of this interaction may involve suppression of peripheral neuromuscular function by decreasing acetylcholine release, reduction of endplate sensitivity, and decreased muscle fiber excitability with magnesium sulfate therapy.Intervention:oMonitor respiration and the depth of neuromuscular blockade frequently (e.g., train-of-four monitoring) when neuromuscular blocking agent is used concomitantly with Magnesium Sulfate in 5% Dextrose Injection. oAdjust the dosage of the neuromuscular blocking agent accordingly to maintain the desired level of musculoskeletal activity. The amount of reversal agent(s) required to achieve adequate reversal of the neuromuscular blocking agent(s) may also be increased.Examples:oDepolarizing neuromuscular blockers: succinylcholine oNon-depolarizing neuromuscular blockers: atracurium, cisatracurium, pancuronium, rocuronium, vecuroniumNarcotics and/or PropofolClinical Impact:oPotentiation and prolongation of analgesia and CNS depression is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection with narcotics and/or propofol. The potential for magnesium sulfate to affect other CNS depressants is unknown [see Clinical Pharmacology (12.2)]. oThe underlying mechanism of this interaction may involve antagonism of N-methyl-D-aspartate (NMDA) by magnesium sulfate therapy.Intervention:oMonitor the depth of CNS depression frequently using reliable instrument.oAdjust the narcotic and/or propofol dosage accordingly to maintain the desired level of analgesia and sedation.Examples:oNarcotics and propofolDihydropyridine Calcium Channel BlockersClinical Impact:oAn exaggerated hypotensive response is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection with dihydropyridine calcium channel blockers. The potential for magnesium sulfate to affect other calcium channel blockers (e.g., diltiazem and verapamil) is unknown [see Clinical Pharmacology (12.2)].Intervention:oMonitor vital signs (heart rate, blood pressure, respiration) frequently.oSupportive care and/or discontinuation of the calcium channel blocker may be required.Examples:oAmlodipine, clevidipine, felodipine, isradipine, nicardipine, nifedipine, nimodipine, and nisoldipineDrugs that May Induce Magnesium LossClinical Impact:oReduced magnesium concentrations may impact efficacyIntervention:oMonitor magnesium concentrations frequently and adjust the Magnesium Sulfate in 5% Dextrose Injection dosage to maintain concentrations in the target range [see Dosage and Administration (2)].Examples:oAlcohol, aminoglycosides, amphotericin B, cisplatin, cyclosporine, digitalis, loop diuretics, thiazide diureticsFor drug incompatibility information [see Dosage and Administration (2.4)].. oPotentiation and prolongation of neuromuscular blockade is possible with the concomitant use of magnesium sulfate and neuromuscular blocking agents [see Clinical Pharmacology (12.2)]. oThe underlying mechanism of this interaction may involve suppression of peripheral neuromuscular function by decreasing acetylcholine release, reduction of endplate sensitivity, and decreased muscle fiber excitability with magnesium sulfate therapy.. oMonitor respiration and the depth of neuromuscular blockade frequently (e.g., train-of-four monitoring) when neuromuscular blocking agent is used concomitantly with Magnesium Sulfate in 5% Dextrose Injection. oAdjust the dosage of the neuromuscular blocking agent accordingly to maintain the desired level of musculoskeletal activity. The amount of reversal agent(s) required to achieve adequate reversal of the neuromuscular blocking agent(s) may also be increased.. oDepolarizing neuromuscular blockers: succinylcholine oNon-depolarizing neuromuscular blockers: atracurium, cisatracurium, pancuronium, rocuronium, vecuronium. oPotentiation and prolongation of analgesia and CNS depression is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection with narcotics and/or propofol. The potential for magnesium sulfate to affect other CNS depressants is unknown [see Clinical Pharmacology (12.2)]. oThe underlying mechanism of this interaction may involve antagonism of N-methyl-D-aspartate (NMDA) by magnesium sulfate therapy.. oMonitor the depth of CNS depression frequently using reliable instrument.. oAdjust the narcotic and/or propofol dosage accordingly to maintain the desired level of analgesia and sedation.. oNarcotics and propofol. oAn exaggerated hypotensive response is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection with dihydropyridine calcium channel blockers. The potential for magnesium sulfate to affect other calcium channel blockers (e.g., diltiazem and verapamil) is unknown [see Clinical Pharmacology (12.2)].. oMonitor vital signs (heart rate, blood pressure, respiration) frequently.. oSupportive care and/or discontinuation of the calcium channel blocker may be required.. oAmlodipine, clevidipine, felodipine, isradipine, nicardipine, nifedipine, nimodipine, and nisoldipine. oReduced magnesium concentrations may impact efficacy. oMonitor magnesium concentrations frequently and adjust the Magnesium Sulfate in 5% Dextrose Injection dosage to maintain concentrations in the target range [see Dosage and Administration (2)].. oAlcohol, aminoglycosides, amphotericin B, cisplatin, cyclosporine, digitalis, loop diuretics, thiazide diuretics. oNeuromuscular blocking agents: Potentiation and prolongation of neuromuscular blockade is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection (7)oNarcotics and/or propofol: Potentiation and prolongation of analgesia and CNS depression is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection (7)oDihydropyridine calcium channel blockers: An exaggerated hypotensive response is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection (7)oDrugs that may induce magnesium loss with concomitant use of Magnesium Sulfate in 5% Dextrose Injection: Alcohol, aminoglycosides, amphotericin B, cisplatin, cyclosporine, digitalis, loop diuretics, and thiazide diuretics (7). oNeuromuscular blocking agents: Potentiation and prolongation of neuromuscular blockade is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection (7). oNarcotics and/or propofol: Potentiation and prolongation of analgesia and CNS depression is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection (7). oDihydropyridine calcium channel blockers: An exaggerated hypotensive response is possible with the concomitant use of Magnesium Sulfate in 5% Dextrose Injection (7). oDrugs that may induce magnesium loss with concomitant use of Magnesium Sulfate in 5% Dextrose Injection: Alcohol, aminoglycosides, amphotericin B, cisplatin, cyclosporine, digitalis, loop diuretics, and thiazide diuretics (7).

HOW SUPPLIED SECTION.

16 HOW SUPPLIED/STORAGE AND HANDLING Magnesium Sulfate in 5% Dextrose Injection, USP is clear solution supplied in VIAFLO single-dose flexible plastic containers (see Table 2).Table : How Supplied InformationMagnesium Sulfate Concentration NDC Number Product CodeContainer Size Total Magnesium Sulfate Total Magnesium Ion Magnesium Ion Concentration Osmolarity 0.01 grams/mL (1%) 0338-1709-40 EZPE8501100 mL gram 8.1 mEq 8.1 mEq/100 mL 333 mOsmol/liter As the heptahydrate; Osmolarity was calculated.VIAFLO container is not made with natural rubber latex, DEHP, or PVC.Storage Store at 20C to 25C (68F to 77F). [See USP Controlled Room Temperature.] Protect from freezing.

INDICATIONS & USAGE SECTION.

1 INDICATIONS AND USAGE Magnesium Sulfate in 5% Dextrose Injection is indicated for: oPrevention of eclampsia in patients with preeclampsia oTreatment of seizures and prevention of recurrent seizures in patients with eclampsia oPrevention of eclampsia in patients with preeclampsia oTreatment of seizures and prevention of recurrent seizures in patients with eclampsia Magnesium Sulfate in 5% Dextrose Injection is indicated for (1): oPrevention of eclampsia in patients with preeclampsia (1)oTreatment of seizures and prevention of recurrent seizures in patients with eclampsia (1). oPrevention of eclampsia in patients with preeclampsia (1). oTreatment of seizures and prevention of recurrent seizures in patients with eclampsia (1).

INFORMATION FOR PATIENTS SECTION.

17 PATIENT COUNSELING INFORMATION Magnesium Sulfate in 5% Dextrose Injection is typically administered to pregnant women in emergent situations. When feasible, advise the patient and family of the following: Fetal-Neonatal Toxicity Reported With Prolonged Use Continuous administration of Magnesium Sulfate in 5% Dextrose Injection in pregnant women beyond to days can lead to hypocalcemia and bone abnormalities in the developing fetus, including skeletal demineralization and osteopenia. In addition, cases of neonatal fracture have been reported [see Warnings and Precautions (5.1)]. Risk of Magnesium ToxicityPregnant women receiving Magnesium Sulfate in 5% Dextrose Injection are at risk for magnesium toxicity, including facial edema, diminished strength of deep tendon reflexes, and respiratory depression [see Warnings and Precautions (5.2)].Baxter LogoBaxter Healthcare CorporationDeerfield, IL 60015 USAMade in IrelandBaxter and Viaflo are trademarks of Baxter International Inc.CB-30-02-634.

LACTATION SECTION.

8.2 Lactation The use of intravenous magnesium in pregnant women increases human milk magnesium concentrations only slightly and oral absorption of magnesium by the infant is poor. The effect of intravenous magnesium on milk production is unknown. The developmental and health benefits to the neonate of breastfeeding should be considered along with the mothers clinical need for Magnesium Sulfate in 5% Dextrose Injection and any potential adverse effects on the breastfed infant from Magnesium Sulfate in 5% Dextrose Injection or from the underlying maternal condition.

MECHANISM OF ACTION SECTION.

12.1 Mechanism of Action Magnesium prevents seizures in patients with preeclampsia and controls seizures in patients with eclampsia by blocking neuromuscular transmission and decreasing the amount of acetylcholine liberated at the end plate by the motor nerve impulse. Magnesium has depressant effect on the central nervous system [see Drug Interactions (7)]. Magnesium acts peripherally to produce vasodilation.

NONCLINICAL TOXICOLOGY SECTION.

13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Studies with Magnesium Sulfate in 5% Dextrose Injection have not been performed to evaluate carcinogenic potential, mutagenic potential or effects on fertility.

OVERDOSAGE SECTION.

10 OVERDOSAGE Manifestations of magnesium toxicity include drop in blood pressure, difficulty breathing, and disappearance of the patellar reflex. As serum magnesium rises above mEq per liter, the deep tendon reflexes decrease. As the serum magnesium level approaches 10 mEq per liter, the tendon reflexes disappear and respiratory paralysis may occur [see Warnings and Precautions (5.2)]. Other signs and symptoms of magnesium overdosage include flushing, sweating, hypotension, weakness, hypothermia, circulatory collapse, cardiac and central nervous system depression proceeding to respiratory paralysis, cardiac arrest, and prolongation of PR and QRS intervals. Patients with renal impairment and underlying neuromuscular diseases such as myasthenia gravis may experience magnesium intoxication at lower magnesium concentrations (Magnesium Sulfate in 5% Dextrose Injection is contraindicated in patients with myasthenia gravis). If patient is experiencing magnesium toxicity, immediately discontinue Magnesium Sulfate in 5% Dextrose Injection. Artificial respiration may be required. Administer an injectable calcium salt to counteract the potential hazards of magnesium toxicity [see Warnings and Precautions (5.2)]. Hypermagnesemia in the newborn (after administration of Magnesium Sulfate in 5% Dextrose Injection to the mother) may require resuscitation and assisted ventilation via endotracheal intubation or intermittent positive pressure ventilation as well as intravenous calcium.

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL.

PACKAGE/LABEL PRINCIPAL DISPLAY PANEL Container Label 100 mLNDC 0338-1709-40Magnesium Sulfatein 5% Dextrose Injection, USP1 g/ 100 mL (10 mg/mL)1 gTOTALEach 100 mL of sterile, nonpyrogenic solution contains:Magnesium Sulfate Heptahydrate g (equivalent to 8.1 mEq magnesium) and dextrose, hydrous g in water for injection. May contain sulfuric acid and/or sodium hydroxide for pH adjustment. pH 4.5 (3.5 to 6.5) 333 mOsmol/Liter (calc.)Single-Dose Container Discard unused portion. For Intravenous Use.Recommended dosage: See prescribing information. Use only ifsolution is clear and container is undamaged. Must not be usedin series connections. Store at 20 to 25C (68 to 77F). [See USPControlled Room Temperature.] Protect from freezing.VIAFLO container is not made with natural rubber latex, DEHP, or PVC.Rx OnlyNumber 07 plastics symbol 0Bar code(01) 00303381709402Baxter Healthcare CorporationDeerfield, IL 60015 USAMade in IrelandEZPE8501CB-35-04-890DO NOT USE THIS PORT symbolLotExpOverpouch Label 100 mLNDC 0338-1709-40Magnesium Sulfatein 5% Dextrose Injection, USP1 g/100 mL (10 mg/mL)1gTotalEach 100 mL of sterile, nonpyrogenic solution contains:Magnesium Sulfate Heptahydrate g (equivalent to 8.1 mEq magnesium) anddextrose, hydrous g in water for injection. May contain sulfuric acid and/orsodium hydroxide for pH adjustment.333 mOsmol/Liter (calc.) pH 4.5 (3.5 to 6.5)DO NOT ADD SUPPLEMENTARY MEDICATION. WHENEVER POSSIBLE USECENTRAL ROUTE.Single-Dose Container Discard unused portion. For Intravenous Use.Recommended dosage: See prescribing information. Use only if solution isclear and container is undamaged. After removing the overwrap, check forminute leaks by squeezing container firmly. If leaks are found, discard unit assterility may be impaired. Must not be used in series connections.The overwrap is moisture barrier. Do not remove unit from overwrap untilready for use. Use unit promptly when pouch is opened.Store at 20 to 25C (68 to 77F). [See USP Controlled Room Temperature.]Protect from freezing.2D Barcode(91)CB1001191Rx OnlyEZPE8501CB-10-01-191Baxter LogoBaxter Healthcare CorporationDeerfield, IL 60015 USAMade in Ireland(See Solution Container for Lot and Exp)Barcode(01) 00303381709402. Magnesium Sulfate in Dextrose Representative Container Label 0338-1709-40. Magnesium Sulfate in Dextrose Representative Overpouch Label 0338-1709-40.

PEDIATRIC USE SECTION.

8.4 Pediatric Use The safety and effectiveness of Magnesium Sulfate in 5% Dextrose Injection have been established for the prevention of eclampsia in adolescents with preeclampsia and the treatment of seizures and prevention of recurrent seizures in adolescents with eclampsia. Dosing recommendation in pregnant adolescent patients are the same as for pregnant adult patients [see Dosage and Administration (2.2)].

PHARMACODYNAMICS SECTION.

12.2 Pharmacodynamics With intravenous administration of magnesium sulfate the onset of anticonvulsant action is immediate and lasts about 30 minutes. The estimated magnesium concentration (above baseline) required to elicit half-maximum effect (EC50) on systolic and diastolic blood pressure in pregnant women with preeclampsia that received intravenous magnesium sulfate therapy was reported to be 1.5 and 1.8 mEq per liter (1.9 and 2.2 mg per dL), respectively, in published study. Effective anticonvulsant serum concentrations range from 2.5 to 7.5 mEq per liter.Drug Interaction Studies The following information is based upon published case reports and clinical studies that could not be confirmed by an adequately controlled study, but still warrant consideration given the potential risks involved [see Drug Interactions (7)]. Neuromuscular Blocking Agents: Potentiation and prolongation of neuromuscular blockade requiring modification of the neuromuscular blocking agent dosage and/or increased reversal agent requirements were reported in preeclamptic women who received magnesium sulfate treatment who underwent subsequent surgery (for example, caesarian section) with anesthesia that included either depolarizing (d-tubocurarine, succinylcholine) or nondepolarizing neuromuscular blocking agent (vecuronium, rocuronium). Narcotics and/or Propofol: Potentiation and prolongation of analgesic and/or sedative effects as well as reduced requirement for an intravenous narcotic (fentanyl, sufentanil, tramadol), intrathecal narcotic (fentanyl), and/or intravenous propofol was reported in magnesium sulfate treated patients who required surgery or intensive care that also included narcotic and/or propofol therapy. Dihydropyridine Calcium Channel Blockers: An exaggerated hypotensive response (blood pressure 80-93/49-60 mm Hg) was reported in preeclamptic women who received oral nifedipine in addition to magnesium sulfate treatment. Blood pressure returned to previous levels within approximately 30 minutes with supportive care.

PHARMACOKINETICS SECTION.

12.3 Pharmacokinetics Distribution Approximately to 2% of total body magnesium is located in the extracellular fluid space. Magnesium is 30% bound to albumin. EliminationThe average half-life and systemic clearance of magnesium sulfate in preeclamptic women is approximately to hours and to liters per hour, respectively. Excretion: Magnesium is excreted solely by the kidney at rate proportional to the serum concentration and glomerular filtration. Specific Populations Patients with Renal Impairment: Plasma magnesium concentrations of to 12.3 mEq per liter (8.6 to 15.1 mg per dL) were reported in preeclamptic women with urine output less than 100 mL per hours that received 20 grams of magnesium sulfate intravenously over to hours in published study [see Dosage and Administration (2.3) and Use in Specific Populations (8.6)].

PREGNANCY SECTION.

8.1 Pregnancy Risk Summary Magnesium Sulfate in 5% Dextrose Injection is indicated in pregnant women for the prevention of eclampsia in women with preeclampsia and the treatment of seizures and prevention of recurrent seizures in women with eclampsia. Fetal, neonatal, and maternal risks are discussed throughout the labeling. Clinical Considerations Labor or Delivery: Magnesium Sulfate in 5% Dextrose Injection is not approved for the treatment of pre-term labor. Administration of Magnesium Sulfate in 5% Dextrose Injection to pregnant women longer than to days may lead to hypocalcemia and bone abnormalities in the developing fetus, including skeletal demineralization and osteopenia [see Warnings and Precautions (5.1)].

SPL UNCLASSIFIED SECTION.

2.1 Important Administration Instructions Magnesium Sulfate in 5% Dextrose Injection is: oA clear solution. Visually inspect Magnesium Sulfate in 5% Dextrose Injection for particulate matter and discoloration prior to administration. Do not administer unless solution is clear and colorless to slightly yellow. oFor intravenous use only oAdministered via intravenous infusion pump Magnesium Sulfate in 5% Dextrose Injection does not require dilution prior to intravenous administration. After removing the overwrap, check for minute leaks by squeezing the container fully. Do not administer Magnesium Sulfate in 5% Dextrose Injection if there is leak or there is greater than mL of water in the overwrap [see Description (11)]. Do not administer Magnesium Sulfate in 5% Dextrose Injection with incompatible drugs through the same intravenous line [see Dosage and Administration (2.4)]. Do not use Magnesium Sulfate in 5% Dextrose Injection in series connections.. oA clear solution. Visually inspect Magnesium Sulfate in 5% Dextrose Injection for particulate matter and discoloration prior to administration. Do not administer unless solution is clear and colorless to slightly yellow. oFor intravenous use only oAdministered via intravenous infusion pump.

USE IN SPECIFIC POPULATIONS SECTION.

8 USE IN SPECIFIC POPULATIONS Patients with severe renal impairment and/or urine output less than 100 mL every hours are at greater risk for increased magnesium concentrations that may lead to toxicity (8.6) 8.1 Pregnancy Risk Summary Magnesium Sulfate in 5% Dextrose Injection is indicated in pregnant women for the prevention of eclampsia in women with preeclampsia and the treatment of seizures and prevention of recurrent seizures in women with eclampsia. Fetal, neonatal, and maternal risks are discussed throughout the labeling. Clinical Considerations Labor or Delivery: Magnesium Sulfate in 5% Dextrose Injection is not approved for the treatment of pre-term labor. Administration of Magnesium Sulfate in 5% Dextrose Injection to pregnant women longer than to days may lead to hypocalcemia and bone abnormalities in the developing fetus, including skeletal demineralization and osteopenia [see Warnings and Precautions (5.1)]. 8.2 Lactation The use of intravenous magnesium in pregnant women increases human milk magnesium concentrations only slightly and oral absorption of magnesium by the infant is poor. The effect of intravenous magnesium on milk production is unknown. The developmental and health benefits to the neonate of breastfeeding should be considered along with the mothers clinical need for Magnesium Sulfate in 5% Dextrose Injection and any potential adverse effects on the breastfed infant from Magnesium Sulfate in 5% Dextrose Injection or from the underlying maternal condition.. 8.4 Pediatric Use The safety and effectiveness of Magnesium Sulfate in 5% Dextrose Injection have been established for the prevention of eclampsia in adolescents with preeclampsia and the treatment of seizures and prevention of recurrent seizures in adolescents with eclampsia. Dosing recommendation in pregnant adolescent patients are the same as for pregnant adult patients [see Dosage and Administration (2.2)].. 8.6 Renal Impairment Magnesium is excreted solely by the kidneys. Patients with severe renal impairment (urine output less than 100 mL per hours) are at greater risk for increased magnesium concentrations that may lead to magnesium toxicity [see Warnings and Precautions (5.2) and Clinical Pharmacology (12.3)] In patients with severe renal impairment, dosage reduction is recommended and the maximum recommended dosage is lower than patients with normal renal function [see Dosage and Administration (2.3)].