SPL Set ID: 2dad630a-09d8-4f40-bdad-24e877a9ee38
1 drug(s) with this SPL Set ID
The active ingredient in Gabapentin Capsules, USP 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 pK a1 of 3.7 and a pK a2 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, USP contains 100 mg, 300 mg, or 400 mg of gabapentin and the following inactive ingredients: mannitol, pregelatinized starch, talc, gelatin, titanium dioxide, yellow iron oxide (300 mg only), FD&C Blue No. 1 (400 mg only), FD&C Red No. 3 (400 mg only) and imprinting ink which contains black iron oxide, potassium hydroxide, propylene glycol and shellac.