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TB-500 (Thymosin Beta-4)

Also known as: TB-500, Thymosin Beta-4, TB4

TB-500 is a synthetic fragment related to the naturally occurring protein Thymosin Beta-4, studied largely in preclinical models of tissue repair, cell migration, and recovery. Human clinical evidence is limited and it is widely regarded as a research compound. This entry is informational and is not a recommendation to use the compound.

At a glance

CategoryHealing & Recovery
Classpeptide, research-peptide
Half-life60 hours (about 2.5 days)
Typical routesubcutaneous
Common vial strengths2 mg, 5 mg, 10 mg
StorageLyophilized powder is commonly stored frozen or refrigerated; reconstituted solutions are typically kept refrigerated.

Elimination curve

100%50%25%12.5%2.557.5100days after a single dose
Simple single‑compartment elimination model ((1/2)t/t½): it ignores absorption, route, and individual variation, so treat it as a shape, not a measurement. In the Peptilot app this curve is stacked across your actual logged doses.

Full clearance milestones on the TB-500 (Thymosin Beta-4) half-life page.

Doing the vial math? The TB-500 (Thymosin Beta-4) reconstitution calculator converts mg to insulin-syringe units, free and without an account.

Questions, answered.

What is TB-500 (Thymosin Beta-4)?
TB-500 is a synthetic fragment related to the naturally occurring protein Thymosin Beta-4, studied largely in preclinical models of tissue repair, cell migration, and recovery. Human clinical evidence is limited and it is widely regarded as a research compound. This entry is informational and is not a recommendation to use the compound.
What is TB-500 (Thymosin Beta-4)'s half-life?
TB-500 (Thymosin Beta-4)'s elimination half-life is approximately 60 hours (about 2.5 days), per published pharmacokinetic data. After about five half-lives (~300 hours (about 13 days)), a single dose is roughly 97% eliminated. Individual clearance varies.
Is TB-500 (Thymosin Beta-4) the same as TB-500 or Thymosin Beta-4 or TB4?
TB-500 and Thymosin Beta-4 and TB4 are other names associated with TB-500 (Thymosin Beta-4).
What do people log alongside TB-500 (Thymosin Beta-4)?
People tracking this research compound often log injection-site tolerance and recovery-related observations. Peptilot has one-tap logging for doses, side effects, weight, and injection sites, so patterns show up in your own record.

Educational information for people who track their protocols — not medical advice, and never a recommendation to use any compound. Always work with a qualified healthcare provider.

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