What are the side effects of TB-500?
The most commonly reported TB-500 side effects are mild fatigue during loading, injection-site soreness, brief head-rush at injection. Most are mild and tend to be dose dependent. It is generally avoided with active malignancy. Human clinical evidence for TB-500 is limited, so this reflects reported and observed effects, not a complete safety profile.
Reported TB-500 side effects
- Mild fatigue during loading
- Injection-site soreness
- Brief head-rush at injection
Who should avoid it
- Active malignancy
- Pregnancy / nursing (no data)
References
- Thymosin β4: a novel regenerative pharmacological agent — Goldstein AL & Kleinman HK, Ann NY Acad Sci, 2012
- Thymosin beta4 activates integrin-linked kinase and promotes cardiac cell migration, survival and cardiac repair — Bock-Marquette I, Saxena A, White MD, Dimaio JM, Srivastava D — Nature, 2004
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
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Last updated 2026-06-06.