# FDA Warning Letter: Signature Formulations, LLC
> 2026-02-10 · Center for Drug Evaluation and Research (CDER) · `6f0ccf528b8efdcd`
## Letter
- **Company:** Signature Formulations, LLC
- **Posted Date:** 2026-02-10
- **Letter Issue Date:** 2026-01-21
- **Issuing Office:** Center for Drug Evaluation and Research (CDER)
## Subject
CGMP/Finished Pharmaceuticals/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*