gabapentin enacarbil 🐶 Veterinary Use | Indications/Contra | FAERs-F | FAERs-M | Orange Bk | BioActivity |

Stem definitionDrug idCAS RN
gabamimetic agents 4177 478296-72-9

Description:

MoleculeDescription

Molfile Inchi Smiles

Synonyms:

  • gabapentin enacarbil
  • horizant
  • XP13512
Gabapentin enacarbil is a prodrug of gabapentin and, accordingly, its therapeutic effects in restless legs syndrome and postherpetic neuralgia are attributable to gabapentin. In animal models of analgesia, gabapentin prevents allodynia (pain-related behavior in response to a normally innocuous stimulus) and hyperalgesia (exaggerated response to painful stimuli).
  • Molecular weight: 329.39
  • Formula: C16H27NO6
  • CLOGP: 3.31
  • LIPINSKI: 0
  • HAC: 7
  • HDO: 2
  • TPSA: 101.93
  • ALOGS: -3.01
  • ROTB: 9

  • Status: ONP

  • Legend:
    OFP - off patent
    OFM - off market
    ONP - on patent

Drug dosage:

None

ADMET properties:

PropertyValueReference
S (Water solubility) 0.50 mg/mL Bocci G, Oprea TI, Benet LZ
BDDCS (Biopharmaceutical Drug Disposition Classification System) 2 Bocci G, Oprea TI, Benet LZ

Approvals:

DateAgencyCompanyOrphan
April 6, 2011 FDA XENOPORT INC

FDA Adverse Event Reporting System (Female)

MedDRA adverse event termLikelihood ratioLikelihood ratio thresholdPatients taking drug having adverse eventPatients taking drug not having adverse eventPatients not taking drug having adverse eventPatients not taking drug not having adverse event
Toxicity to various agents 950.04 34.62 317 1365 246933 63240407
Completed suicide 439.68 34.62 158 1524 145515 63341825
Cardio-respiratory arrest 164.19 34.62 61 1621 59898 63427442
Drug abuse 145.95 34.62 59 1623 72459 63414881
Accidental overdose 111.35 34.62 36 1646 23273 63464067
Myoclonus 42.72 34.62 16 1666 15852 63471488

FDA Adverse Event Reporting System (Male)

MedDRA adverse event termLikelihood ratioLikelihood ratio thresholdPatients taking drug having adverse eventPatients taking drug not having adverse eventPatients not taking drug having adverse eventPatients not taking drug not having adverse event
Toxicity to various agents 790.59 52.21 262 708 200100 34755861
Completed suicide 324.93 52.21 115 855 98053 34857908
Drug abuse 175.09 52.21 74 896 99022 34856939
Cardio-respiratory arrest 119.95 52.21 48 922 55225 34900736
Accidental overdose 59.60 52.21 22 948 20118 34935843

FDA Adverse Event Reporting System (Geriatric)

MedDRA adverse event termLikelihood ratioLikelihood ratio thresholdPatients taking drug having adverse eventPatients taking drug not having adverse eventPatients not taking drug having adverse eventPatients not taking drug not having adverse event
Toxicity to various agents 1725.39 33.90 578 1784 420962 79321064
Completed suicide 735.59 33.90 272 2090 245495 79496531
Drug abuse 316.64 33.90 133 2229 162558 79579468
Cardio-respiratory arrest 280.72 33.90 109 2253 108401 79633625
Accidental overdose 189.99 33.90 63 2299 39518 79702508
Myoclonus 79.02 33.90 30 2332 27630 79714396
Intentional product misuse 36.95 33.90 27 2335 95138 79646888

FDA Adverse Event Reporting System (Pediatric)

None

Pharmacologic Action:

SourceCodeDescription
FDA PE N0000008486 Decreased Central Nervous System Disorganized Electrical Activity
MeSH PA D000700 Analgesics
MeSH PA D014151 Anti-Anxiety Agents
MeSH PA D000927 Anticonvulsants
MeSH PA D018692 Antimanic Agents
MeSH PA D002491 Central Nervous System Agents
MeSH PA D002492 Central Nervous System Depressants
MeSH PA D018691 Excitatory Amino Acid Antagonists
MeSH PA D018377 Neurotransmitter Agents
MeSH PA D018373 Peripheral Nervous System Agents
MeSH PA D011619 Psychotropic Drugs
MeSH PA D018689 Sensory System Agents
MeSH PA D014149 Tranquilizing Agents
FDA EPC N0000175753 Anti-epileptic Agent
CHEBI has role CHEBI:35623 anticonvulsants
CHEBI has role CHEBI:35703 Xenobiotic
CHEBI has role CHEBI:38215 calcium channel blockers
CHEBI has role CHEBI:78298 environmental contaminants
CHEBI has role CHEBI:50266 Prodrugs

Drug Use | Suggest Off label Use Form| |View source of the data|

DiseaseRelationSNOMED_IDDOID
Postherpetic neuralgia indication 2177002
Restless legs indication 32914008 DOID:0050425
Partial Epilepsy Treatment Adjunct off-label use
Suicidal thoughts contraindication 6471006
Depressive disorder contraindication 35489007
Kidney disease contraindication 90708001 DOID:557




🐶 Veterinary Drug Use

None

🐶 Veterinary products

None

Acid dissociation constants calculated using MoKa v3.0.0

Dissociation levelDissociation constantType (acidic/basic)
pKa1 4.33 acidic

Orange Book patent data (new drug applications)

Formulation strengthTrade nameApplicantApplication numberApproval dateTypeDose formRoutePatent numberPatent expiration datePatent use
300MG HORIZANT AZURITY N022399 Dec. 13, 2011 RX TABLET, EXTENDED RELEASE ORAL 8686034 Jan. 24, 2025 MANAGEMENT OF POSTHERPETIC NEURALGIA (PHN) IN ADULTS
300MG HORIZANT AZURITY N022399 Dec. 13, 2011 RX TABLET, EXTENDED RELEASE ORAL 8686034 Jan. 24, 2025 TREATMENT OF MODERATE-TO-SEVERE PRIMARY RESTLESS LEG SYNDROME IN ADULTS
600MG HORIZANT AZURITY N022399 April 6, 2011 RX TABLET, EXTENDED RELEASE ORAL 8686034 Jan. 24, 2025 MANAGEMENT OF POSTHERPETIC NEURALGIA (PHN) IN ADULTS
600MG HORIZANT AZURITY N022399 April 6, 2011 RX TABLET, EXTENDED RELEASE ORAL 8686034 Jan. 24, 2025 TREATMENT OF MODERATE-TO-SEVERE PRIMARY RESTLESS LEG SYNDROME IN ADULTS
300MG HORIZANT AZURITY N022399 Dec. 13, 2011 RX TABLET, EXTENDED RELEASE ORAL 8114909 April 11, 2026 TREATMENT OF MODERATE-TO-SEVERE PRIMARY RESTLESS LEG SYNDROME IN ADULTS
600MG HORIZANT AZURITY N022399 April 6, 2011 RX TABLET, EXTENDED RELEASE ORAL 8114909 April 11, 2026 TREATMENT OF MODERATE-TO-SEVERE PRIMARY RESTLESS LEG SYNDROME IN ADULTS
300MG HORIZANT AZURITY N022399 Dec. 13, 2011 RX TABLET, EXTENDED RELEASE ORAL 8795725 June 10, 2029 MANAGEMENT OF POSTHERPETIC NEURALGIA (PHN) IN ADULTS
300MG HORIZANT AZURITY N022399 Dec. 13, 2011 RX TABLET, EXTENDED RELEASE ORAL 8795725 June 10, 2029 TREATMENT OF MODERATE-TO-SEVERE PRIMARY RESTLESS LEG SYNDROME IN ADULTS
600MG HORIZANT AZURITY N022399 April 6, 2011 RX TABLET, EXTENDED RELEASE ORAL 8795725 June 10, 2029 MANAGEMENT OF POSTHERPETIC NEURALGIA (PHN) IN ADULTS
600MG HORIZANT AZURITY N022399 April 6, 2011 RX TABLET, EXTENDED RELEASE ORAL 8795725 June 10, 2029 TREATMENT OF MODERATE-TO-SEVERE PRIMARY RESTLESS LEG SYNDROME IN ADULTS

Orange Book exclusivity data (new drug applications)

None

Bioactivity Summary:

TargetClassPharosUniProtActionTypeActivity value
(-log[M])
Mechanism
action
Bioact sourceMoA source
Voltage-dependent calcium channel subunit alpha-2/delta-1 Ion channel MODULATOR SCIENTIFIC LITERATURE SCIENTIFIC LITERATURE
Voltage-dependent calcium channel subunit alpha-2/delta-2 Ion channel MODULATOR SCIENTIFIC LITERATURE SCIENTIFIC LITERATURE

External reference:

IDSource
4030724 VUID
N0000182734 NUI
D09539 KEGG_DRUG
4020833 VANDF
4030724 VANDF
C2700226 UMLSCUI
CHEBI:68840 CHEBI
CHEBI:42797 CHEBI
GBN PDB_CHEM_ID
CHEMBL1628502 ChEMBL_ID
DB08872 DRUGBANK_ID
C493250 MESH_SUPPLEMENTAL_RECORD_UI
7560 IUPHAR_LIGAND_ID
8611 INN_ID
75OCL1SPBQ UNII
9883933 PUBCHEM_CID
1095698 RXNORM
180816 MMSL
27821 MMSL
4770 MMSL
60712 MMSL
d03182 MMSL
004415 NDDF
013726 NDDF
108402001 SNOMEDCT_US
386845007 SNOMEDCT_US
703122000 SNOMEDCT_US
C0060926 UMLSCUI
DB00996 DRUGBANK_ID
5094 INN_ID
D000077206 MESH_DESCRIPTOR_UI
3446 PUBCHEM_CID

Pharmaceutical products:

ProductCategoryIngredientsNDCFormQuantityRouteMarketingLabel
Horizant HUMAN PRESCRIPTION DRUG LABEL 1 53451-0101 TABLET, EXTENDED RELEASE 600 mg ORAL NDA 35 sections
Horizant HUMAN PRESCRIPTION DRUG LABEL 1 53451-0101 TABLET, EXTENDED RELEASE 600 mg ORAL NDA 35 sections
Horizant HUMAN PRESCRIPTION DRUG LABEL 1 53451-0103 TABLET, EXTENDED RELEASE 300 mg ORAL NDA 35 sections
Horizant HUMAN PRESCRIPTION DRUG LABEL 1 53451-0103 TABLET, EXTENDED RELEASE 300 mg ORAL NDA 35 sections