TB-500: Patient Information & Safety Notes
Also known as Tβ4 fragment
Other names: thymosin-beta-4-fragment, t4-fragment
TB-500 is a synthetic peptide fragment of thymosin beta-4, a naturally occurring protein involved in actin regulation and cell migration. It has been studied in preclinical models for wound healing and tissue repair. It is NOT approved by the FDA for any human use.
In plain language
What TB-500 is used for
- Studied in preclinical models for effects on cell migration and tissue-repair pathways
Taking this medicine
How it is administered
- Subcutaneous injection
Read before you decide
Risks and precautions
Risks and warnings
- Injection site irritation
- Headache, nausea, fatigue
- Long-term human safety unknown
Who should not take it
- Personal or family history of cancer (precautionary)
Common questions
Patient questions
Is TB-500 the same as thymosin beta-4?
TB-500 is a synthetic fragment of thymosin beta-4, not the full peptide. It is a research compound that is not FDA-approved. Its effects in humans are not established by clinical evidence.
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This information is educational — not medical advice.
This page is provided for general educational purposes and summarizes publicly available data from sources such as the U.S. Food & Drug Administration. It is not a substitute for the judgment of a licensed clinician and should not be used to start, stop, or change any medication. It may be incomplete or out of date, and individual circumstances vary. Always talk with your prescriber or pharmacist about your specific medications and health conditions. If you think you may have a medical emergency, call 911.
Sources & References
Learn more about where our data comes from and how we write and review medical content.