Gabapentindrug info
gabapentin 400 MG Oral Capsule
What it is used for
Gabapentin is indicated for:
Management of postherpetic neuralgia in adults
Adjunctive therapy in the treatment of partial onset seizures, with and without secondary generalization, in adults and pediatric patients 3 years and older with epilepsy Gabapentin is indicated for:
Postherpetic neuralgia in adults
Adjunctive therapy in the treatment of partial onset seizures, with and without secondary generalization, in adults and pediatric patients 3 years and older with epilepsy
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective May 28, 2026. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
Description
The active ingredient in gabapentin capsules is gabapentin, which has the chemical name 1-(aminomethyl) cyclohexaneacetic acid. The molecular formula of gabapentin is C 9 H 17 NO 2 and the molecular weight is 171.24. The structural formula of gabapentin is: Gabapentin is a white to off-white crystalline solid with a pKa1 of 3.7 and a pKa2 of 10.7. It is freely soluble in water and both basic and acidic aqueous solutions. The log of the partition coefficient (n-octanol/0.05M phosphate buffer) at pH 7.4 is –1.25. Each gabapentin capsule contains 100 mg, 300 mg, or 400 mg of gabapentin and the following inactive ingredients: anhydrous lactose, cornstarch, and talc. The 100 mg capsule shell contains gelatin, sodium lauryl sulfate, and titanium dioxide. The 300 mg capsule shell contains gelatin, sodium lauryl sulfate, titanium dioxide, and yellow iron oxide. The 400 mg capsule shell contains gelatin, sodium lauryl sulfate, red iron oxide, titanium dioxide, and yellow iron oxide. The imprinting ink contains shellac, dehydrated alcohol, isopropyl alcohol, butyl alcohol, propyl glycol, strong ammonia solution, and titanium dioxide. Structure
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective May 28, 2026. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
This page reproduces regulatory text for reference. It is not medical advice, and KenyRx is not a pharmacy or a prescriber. Talk to a doctor or pharmacist about whether a medicine is right for you.
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