SPL Set ID: 170c0c95-2ee8-4dff-bbd6-b87a21e8cf81

Pregabalin, USP is described chemically as (S) -3-(aminomethyl)-5-methylhexanoic acid. The molecular formula is C 8 H 17 NO 2 and the molecular weight is 159.23. The chemical structure of pregabalin is: Pregabalin, USP is a white to off-white powder, with a pK a1 of 4.2 and a pK a2 of 10.6. It is freely soluble in 3M hydrochloric acid, sparingly soluble in water and slightly soluble in methanol. The log of the partition coefficient (n-octanol/water) at pH 7.4 is -1.35. Pregabalin capsules are administered orally and are supplied as imprinted hard gelatin capsules containing 25, 50, 75, 100, 150, 200, 225, and 300 mg of pregabalin, along with mannitol (Pearlitol 160C) and talc as inactive ingredients. The capsule shell for 75 mg, 100 mg, 200 mg, 225 mg and 300 mg contains gelatin, red iron oxide and titanium dioxide. The capsule shell for 25 mg, 50 mg and 150 mg contains gelatin and titanium dioxide. The imprinting ink contains black iron oxide, butyl alcohol, dehydrated alcohol, isopropyl alcohol, potassium hydroxide, propylene glycol, shellac, and strong ammonia solution. str