يستعمل دواء زيفكس 100مجم 28 اقراصzeffix 100mg 28 f.c.tab. anti-viral.nucleoside anti-viral.nucleoside

about lamivudine -nucleoside reverse transcriptase inhibitor cytidine analogue antiretroviral. - -mechanism of action of lamivudine -lamivudine is a deoxy cytidine nucleoside analogue. it undergoes phosphorylation in the presence of kinase enzyme and form lamivudine triphosphate. this lamivudine triphosphate competitively inhibit hiv reverse transcriptase enzyme which is responsible for the conversion of viral rna to pro viral dna and is then added to host cell chromosome. lamivudine triphosphate terminates elongation of pro viral dna and results in inhibition of viral replication. lamivudine triphosphate is also a potent inhibitor of hbv (hepatitis b virus) - -indications for lamivudine -1.hiv infections -2.treatment of chronic hepatitis b - -interactions for lamivudine -trimethoprim sulfamethoxazole: results in an increase in auc of lamivudine and a decrease in renal clearance. -zidovudine: results in an increase in c max. of zidovudine.