# FDA Warning Letter: Zhejiang Tianyu Pharmaceutical Co., Ltd.
> 2022-09-27 · Center for Drug Evaluation and Research | CDER · `1bc209374022ab76`
## Letter
- **Company:** Zhejiang Tianyu Pharmaceutical Co., Ltd.
- **Posted Date:** 2022-09-27
- **Letter Issue Date:** 2022-08-17
- **Issuing Office:** Center for Drug Evaluation and Research | CDER
## Subject
CGMP/Active Pharmaceutical Ingredient (API)/Adulterated
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*Source: [FDA Warning Letters](https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/compliance-actions-and-activities/warning-letters) · AI Analytics · CC0 1.0*