Thymosin Alpha-1
MODERATE EVIDENCEAlso known as: Ta1, Thymalfasin
Approved in some countries; NOT approved in the US — research supply is not a medicine
Educational Overview
A 28-amino-acid peptide derived from prothymosin alpha, studied for immunomodulatory activity. Approved for certain indications in some jurisdictions but not by the FDA.
Research Mechanism
Studied for effects on T-cell maturation and innate immune signalling in both preclinical and clinical research settings.
Areas of Study
- Immune modulation (clinical, non-US)
- Adjuvant research
Safety Considerations
Not FDA-approved. The FDA has placed this substance on its list of compounds difficult to compound, and it is not permitted in US compounded drug products. Research material only.
Frequently Asked Questions
Is this approved for human use?
No. This material is supplied for laboratory research use only by qualified businesses and institutions. It is not a medicine and is not for human or veterinary consumption.
Do you provide purity documentation?
Certificates of analysis are available to approved accounts. Contact our team for batch-specific documentation.
References
References pending editorial review
We publish citations only after a qualified reviewer has verified them against the primary literature. We do not list references we have not checked. (1 queued.)
Last reviewed: 2026-07-23 · Status: in_review · References verified by editorial review before publication.
Disclaimer: Educational only. Not medical advice, diagnosis, or treatment. For research and educational purposes. Consult a licensed medical professional.