# FDA Warning Letter: Purushothaman Damodara Kumaran, M.D.
> 2026-01-13 · Center for Drug Evaluation and Research (CDER) · `84c27e9c18466c57`
## Letter
- **Company:** Purushothaman Damodara Kumaran, M.D.
- **Posted Date:** 2026-01-13
- **Letter Issue Date:** 2025-12-22
- **Issuing Office:** Center for Drug Evaluation and Research (CDER)
## Subject
In Vivo Bioavailability-Bioequivalence Studies – Clinical
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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*