Active Ingredient(s): Zanamivir
FDA Approved: * July 26, 1999
Category: Antiviral

* This drug may consist of multiple approval dates, manufacturers, or distributors. If applicable, they would be listed below under "NDC Database Records".

Relenza Overview

Zanamivir is a medication used to treat and prevent influenza caused by influenza A and B viruses. It is a neuraminidase inhibitor and was developed by the Australian biotech firm Biota Holdings. It was licensed to Glaxo in 1990 and approved in the US in 1999, only for use as a treatment for influenza. In 2006, it was approved for prevention of influenza A and B.[1] Zanamivir was the first neuraminidase inhibitor commercially developed. It is currently marketed by GlaxoSmithK...

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Details May Include Instructions, Side Effects, Interactions, Etc. Drug monograph is from Wikipedia. All text is available under the terms of the GFDL (GNU Free Documentation License). Source:

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Relenza for influenza

Does anyone have experience using Relenza to treat or prevent the flu? ## Hello, Ldkat! How are you? I've never taken it, I usually opt for the flu shot each year, but I can tell you more about it. It is an antiviral medication and if taken, before you actually have flu symptoms, it can sometimes prevent it entirely. Otherwise, if taken after you have it, it helps prevent the virus from replicating in your body, which can lessen the symptoms, their severity and the duration of the the flu. The most common side effects, as listed by the FDA, may possibly include diarrhea. nausea, headache, dizziness and cough. Are there any other questions or concerns?


Possible Dosages for this and Related Drugs:

  • Powder: 5mg
Note: Above list includes dosages for all drugs with the same combination of active ingredients.

NDC Database Records for Relenza: (3 results)

Sorted by National Drug Code
  • 0173-0681 Relenza 5 mg/1 Respiratory (Inhalation) Powder by Glaxosmithkline LLC
  • 54868-4377 Relenza 5 mg/1 Respiratory (Inhalation) Powder by Physicians Total Care, Inc.
  • 68258-3030 Relenza 5 mg/1 Respiratory (Inhalation) Powder by Dispensing Solutions Inc.

Other drugs which contain Zanamivir or a similar ingredient: (1 result)

Related Relenza Topics:

Relenza for influenza
Does anyone have experience using Relenza to treat or prevent the flu? ## Hello, Ldkat! How are you? I've never take... 1 reply

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