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Drug Information for Gabapentin Tablets, USP (Rebel Distributors Corp.): DESCRIPTION
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Gabapentin tablets, USP are supplied as elliptical film-coated tablets containing 600 mg and 800 mg of gabapentin USP.
The inactive ingredients for the tablets are glyceryl behenate, hydroxypropyl cellulose, low substituted hydroxypropyl cellulose, magnesium stearate, mannitol, talc, pregelatinized starch and Opadry YS-1-7003 (hypromellose, titanium dioxide, polyethylene glycol, and polysorbate 80).
Gabapentin is described as 1-(aminomethyl) cyclohexaneacetic acid with a molecular formula of C9H17NO2 and a molecular weight of 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.
- Drug Information Provided by National Library of Medicine (NLM).