SPL Set ID: 82685c2f-791b-440f-a1c2-5a032da7adca

Oseltamivir phosphate capsules, USP, an influenza neuraminidase inhibitor (NAI), are available as capsules containing 30 mg, 45 mg, or 75 mg of oseltamivir for oral use, in the form of oseltamivir phosphate, USP. In addition to the active ingredient, each capsule contains pregelatinized starch, croscarmellose sodium, povidone K-30, talc and sodium stearyl fumarate. The 30 mg and 75 mg capsule shell contains gelatin, iron oxide red, iron oxide yellow and titanium dioxide. The 45 mg capsule shell contains gelatin, ferrosoferric oxide and titanium dioxide. Each capsule is printed with blue ink, which contains shellac and FD&C Blue No. 2 Aluminium Lake as the colorant. Oseltamivir phosphate is a white to off white powder with the chemical name (3R,4R,5S)-4-acetylamino-5-amino-3(1-ethylpropoxy)-1-cyclohexene-1-carboxylic acid, ethyl ester, phosphate (1:1). The chemical formula is C 16 H 28 N 2 O 4 (free base). The molecular weight is 312.4 for oseltamivir free base and 410.4 for oseltamivir phosphate salt. The structural formula is as follows: Structure