The US Food and Drug Administration has granted tentative approval for a fixed dose formulation of two generic drugs for use in combination with antiretrovirals.
Lamivudine and tenofovir disoproxil fumarate tablets, manufactured by India’s Ranbaxy Laboratories, will not be available for marketing in the US because of existing patent protections, but will be eligible for purchase elsewhere under the President’s Emergency Plan for Aids Relief programme.
Lamivudine (2′,3′-dideoxy-3′-thiacytidine, commonly called 3TC) is a potent nucleoside analog reverse transcriptase inhibitor (nRTI).
It is marketed by GlaxoSmithKline with the brand names Zeffix, Heptovir, Epivir, and Epivir-HBV.
Lamivudine has been used for treatment of chronic hepatitis B at a lower dose than for treatment of HIV. It improves the seroconversion of e-antigen positive hepatitis B and also improves histology staging of the liver. Long term use of lamivudine unfortunately leads to emergence…
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