FDA warning letter: Chengdu Brilliant Biopharmaceutical Co., Ltd.
What the FDA told Chengdu Brilliant Biopharmaceutical Co., Ltd. in September 2025 about semaglutide — and whether it has been resolved.
“Based on the records and information you provided, your firm has not conducted process validation for the Glucagon-Like Peptide-1 Receptor Agonist (GLP-1) API Semaglutide manufactured at your site. Process validation evaluates the soundness of design and state of control of a process throughout its lifecycle.”
What an FDA warning letter is
It is a letter. The FDA writes to a company to say which of its practices the agency believes break the law, and asks it to fix them. That is the whole mechanism: a written notice, published so anyone can read it.
It is the FDA’s position, not a court’s finding. The company can reply, and can disagree. The agency states in these letters that failing to address the problems may lead to further action such as seizure or an injunction — which tells you the letter itself is not yet either of those things.
A warning letter does not recall a product, suspend a licence or close a business. It does not mean that medicine already dispensed was unsafe. When the FDA is satisfied the problems are fixed, it publishes a closeout letter.
What it does tell you is that a regulator looked at this company and wanted something changed. The useful question is what — and the quoted passage above answers it more precisely than any summary can.
What the letter says
| Field | What the letter states | Source |
|---|---|---|
| Recipient | Chengdu Brilliant Biopharmaceutical Co., Ltd. | FDA warning letter |
| Issued | Sep 11, 2025 | FDA warning letter |
| Issuing office | Center for Drug Evaluation and Research (CDER) | FDA warning letter |
| FDA reference | MARCS-CMS 711330 | FDA warning letter |
| Location | Chengdu Shi, Sichuan Sheng, China | FDA warning letter |
| Subject | CGMP/Finished Pharmaceuticals/Adulterated | FDA warning letter |
| What it concerns | How the medicine was made | Read from the subject line |
| Medication named | Semaglutide | Letter text |
| Status | Open — no closeout letter published | FDA warning letter list |
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NADAC figures are pharmacy acquisition costs, not retail prices and not what you will pay. This content is educational and is not medical advice.