Active substance
Zanamivir
2 products from 2 companies contain this in United States.
2 prescription onlyPowder
Prescription only
Relenza5 mgPrescription only GlaxoSmithKline LLC · ZanamivirRelenza5 mgPrescription only A-S Medication Solutions · Zanamivir
Same substance is not the same product. Strength, form, release mechanism and other ingredients all differ. Whether one can replace another is a decision for a pharmacist.