Fabiflu is anantiviral medicine. Fabiflu is used for the treatment of Influenza. Fabiflu isa pyrazine carboxamide derivative like (T-1105 & T-1106). Fabiflu is alsobeing studied and used to treat a number of other viral infections. It became acommon drug.The mechanism of action is thought to be combined with the selectiveinhibition of viral RNA-dependent RNA polymerase. Other research suggests that Fabifluinduces lethal RNA transversion mutations, producing an unwise viral phenotype.Fabiflu is a prodrug that is used to metabolize an active form, Fabiflu-ribofuranosyl-5'-triphosphate(Fabiflu-RTP), available in both oral and intravenous formulations.