Pharmacology General 48952e89 Which of the following has poorest oral bioavailability? A Oseltamiviir B Zanamivir C Rrimanti dine D Amantadine High-Yield Explanation Ans. is 'b' i.e., Zanamivir o Zanamivir has minimum oral bioavailability thus it is given by intranasal or intravenous routes.