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Lamivudine and Zidovudine tablets USP, a combination of two nucleoside analogues, are indicated in combination with other antiretrovirals for the treatment of HIV-1 infection.
Lamivudine and Zidovudine: Lamivudine and Zidovudine tablets USP are combination tablets containing lamivudine and zidovudine. Lamivudine (EPIVIR) and zidovudine (RETROVIR, azidothymidine, AZT, or ZDV) are synthetic nucleoside analogues with activity against HIV-1.
Lamivudine and Zidovudine tablets USP are for oral administration. Each film-coated tablet contains 150 mg of lamivudine, 300 mg of zidovudine, and the inactive ingredients colloidal silicon dioxide, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80, sodium starch glycolate, and titanium dioxide.
Lamivudine: The chemical name of lamivudine is (2R,cis)-4-amino-l-(2-hydroxymethyl-l,3-oxathiolan-5-yl)-(lH)-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 C8H11N3O3S and a molecular weight of 229.3. It has the following structural formula:
Lamivudine USP is a white to off-white solid with a solubility of approximately 70 mg/mL in water at 20°C.
Zidovudine: The chemical name of zidovudine is 3’-azido-3’-deoxythymidine. It has a molecular formula of C10H13N5O4 and a molecular weight of 267.24. It has the following structural formula:
Zidovudine USP is a white to light yellowish powder with a solubility of 20.1 mg/mL in water at 25°C.
Meets USP Dissolution Test 2.