Drug InteractionsZanamivir can interact with a few other medications (see Drug Interactions With Zanamivir).
What If I Take an Overdose of Zanamivir?It is not known what to expect from an overdose of zanamivir, other than the usual side effects of the drug. If you happen to overdose on the medication, seek immediate medical attention.
(Click Relenza Overdose for more information.)
How Should It Be Stored?Zanamivir should be stored at room temperature, away from moisture and heat. Do not puncture the blisters that contain the powder until you are taking a dose.
Keep zanamivir and all other medications out of the reach of children.
What Should I Do If I Miss a Dose?If you miss a dose, take the missed dose as soon as you remember, and then continue with your regular schedule. However, if it is almost time for your next dose (within two hours), skip the missed dose and continue as directed. Do not take a double dose. If you have missed several doses, please check with your healthcare provider.
How Does Zanamivir Work?Zanamivir is believed to work by inhibiting a viral enzyme called neuraminidase. By inhibiting this enzyme, the drug helps to prevent the release of the virus from infected cells. Essentially, zanamivir does not directly help the cells that have already been infected; instead, it prevents other cells from being infected as well. Zanamivir is active against both influenza A and influenza B viruses.