Drug
Who makes zanamivir?
2 companies list zanamivir as a human prescription drug, including under the names RELENZA. Forms: powder. Routes: respiratory (inhalation).
Labellers from the openFDA NDC Directory. A labeller is the firm named on the label, not necessarily the site that made the product, and a listing is not an FDA approval. Data as of 24 Sept 2026. Methodology
Companies listing zanamivir
| Company | Forms | Application | NDCs | Registered sites |
|---|---|---|---|---|
| GlaxoSmithKline Biologicals SAUnited Kingdom | powder | NDANDA021036 | 1 | 19 |
| International Medication Systems, Ltd.United States | powder | NDANDA021036 | 1 | 3 |
Bulk ingredient listings
- Glaxo Operations UK Ltd · 1 NDC
Enquiry
Common questions
- Who makes zanamivir?
- 2 companies list zanamivir as a human prescription drug in the openFDA NDC Directory, led by GlaxoSmithKline Biologicals SA, International Medication Systems, Ltd.. Each is the labeller, the firm named on the label; the product may be made at a site registered to another company.
- Who supplies zanamivir active ingredient?
- 1 company lists zanamivir as a bulk ingredient, including Glaxo Operations UK Ltd.