SPL Set ID: 507bf6d0-e7a2-413d-9848-cd2445a1411d
1 drug(s) with this SPL Set ID
The active ingredient in gabapentin capsule, USP is gabapentin, USP, 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 g/mol. The structural formula of gabapentin is: Gabapentin, USP 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, USP and the following inactive ingredients: magnesium stearate, pregelatinized starch (corn), starch (corn) 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 iron oxide yellow. The 400 mg capsule shell contains gelatin, sodium lauryl sulfate, titanium dioxide, FD&C yellow#6 and FD&C blue #1. The black pharmaceutical ink used for 100 mg, 300 mg and 400 mg capsules contain D&C yellow #10, FD&C blue #1, FD&C blue #2, FD&C red #40, ferrosoferric oxide, N-butyl alcohol, propylene glycol and shellac. chem structure