# FDA Warning Letter: 4U Health
> 2026-03-24 · Center for Biologics Evaluation and Research (CBER) · `e8f9ee22c58977db`
## Letter
- **Company:** 4U Health
- **Posted Date:** 2026-03-24
- **Letter Issue Date:** 2026-03-17
- **Issuing Office:** Center for Biologics Evaluation and Research (CBER)
## Subject
Premarket Approval/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*