SPL Set ID: 1d8e7bb9-8624-4739-9719-fe25109d6365

Abacavir and Lamivudine Tablets USP Abacavir and lamivudine tablets USP contain the following 2 synthetic nucleoside analogues: abacavir (ZIAGEN, also a component of TRIZIVIR ® ) and lamivudine (also known as EPIVIR or 3TC) with inhibitory activity against HIV-1. Abacavir and lamivudine tablets USP are for oral administration. Each orange colored, oval shaped, biconvex, film-coated tablet contains the active ingredients 600 mg of abacavir as abacavir sulfate and 300 mg of lamivudine, and the inactive ingredients crospovidone, magnesium stearate, microcrystalline cellulose, and povidone. The tablets are coated with a film that is made of FD&C Yellow No. 6, hypromellose, polyethylene glycol, polysorbate, and titanium dioxide. Abacavir Sulfate The chemical name of abacavir sulfate is (1S,4R)- 4-[2-Amino-6-(cyclopropylamino) -9H- purin-9-yl]-2-cyclopentene-1-methanol sulfate (2:1). Abacavir sulfate is the enantiomer with 1S, 4R absolute configuration on the cyclopentene ring. It has a molecular formula of (C 14 H 18 N 6 O) 2 . H 2 SO 4 and a molecular weight of 670.74 g per mol. It has the following structural formula: Abacavir sulfate is a white to off-white solid with a solubility of approximately 77 mg per mL in distilled water at 25°C. In vivo, abacavir sulfate dissociates to its free base, abacavir. Dosages are expressed in terms of abacavir. Lamivudine The chemical name of lamivudine is (2R, cis)-4-amino-1-(2- hydroxymethyl-1,3-oxathiolan-5-yl)-(1H)-pyrimidin-2-one. Lamivudine is the (-) enantiomer of a dideoxy analogue of cytidine. Lamivudine has also been referred to as (-)2',3'-dideoxy, 3'thiacytidine. It has a molecular formula of C 8 H 11 N 3 O 3 S and a molecular weight of 229.26 g per mol. It has the following structural formula: Lamivudine is a white to off-white solid with a solubility of approximately 68 mg per mL in water at 20°C. Image-02 image-03