Which of the following has poorest oral bioavailability?: (A) Oseltamiviir, (B) Zanamivir, (C) Rrimanti dine, (D) Amantadine
Answer is B. Ans. is 'b' i.e., Zanamivir o Zanamivir has minimum oral bioavailability thus it is given by intranasal or intravenous routes.