FDA approved the original biologics license application for ZINPLAVA on October 21, 2016, sponsored by MERCK SHARP DOHME. FDA classed that submission a new molecular entity, which makes it the first approval of bezlotoxumab in any product. FDA has approved 1 efficacy supplement on the application since, the most recent on May 26, 2023.
- Application
- BLA761046
- Sponsor
- MERCK SHARP DOHME
- Original approval
- Review
- priority review
- Submission class
- Type 1 - New Molecular Entity
- Active ingredient
- bezlotoxumab
Browse every approval whose brand starts with Z, or the complete response letters FDA has published — the applications it did not approve.
Products under this application
| Ingredient and strength | Form | Route | Marketing status |
|---|---|---|---|
| bezlotoxumab 1000ML/40ML | INJECTABLE | INJECTION | Prescription |
Approved efficacy supplements
An efficacy supplement is how a sponsor asks FDA to approve a change that needs clinical evidence — most often a new indication. FDA’s record gives each one a submission number, a date and a review priority. It does not say what any supplement approved, so neither does this page. The approval letter and label for each are on accessdata.fda.gov under the application number.
| Approved | Supplement | Review |
|---|---|---|
| S-12 | priority |
Source: FDA’s Drugs@FDA application file, via openFDA (export 2026-09-03). Every field on this page comes from that record.
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