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TB-500 (Thymosin Beta-4) half-life

TB-500 (Thymosin Beta-4) has an elimination half-life of approximately 60 hours (about 2.5 days). Here is what that means for how long a single dose stays in your system.

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.

Clearance milestones

MilestoneTime after a single dose
50% eliminated~2.5 days
75% eliminated~5 days
90% eliminated~8.3 days
~97% eliminated (≈5 half-lives)~12.5 days

About 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.

See the full TB-500 (Thymosin Beta-4) compound page or the TB-500 (Thymosin Beta-4) reconstitution calculator, or compare against other compounds on the half-life overview.

Questions, answered.

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), based on published pharmacokinetic data. That means about half of a dose is eliminated in that time, half of the remainder in the next interval, and so on.
How long does TB-500 (Thymosin Beta-4) stay in your system?
Using the ~5-half-lives rule of thumb, a single dose of TB-500 (Thymosin Beta-4) is roughly 97% eliminated after ~12.5 days. Actual clearance varies with dose history, route, and individual metabolism — treat this as an educational estimate, not a measurement.
Do levels build up with repeated doses?
Yes — if a new dose lands before the previous one is eliminated, the remainders stack. With consistent dosing, estimated levels reach steady state after roughly four to five half-lives. Peptilot's Levels feature stacks this exact curve across your logged doses so you can see the estimate for your own history.

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.

Peptilot charts your estimated TB-500 (Thymosin Beta-4) levels from the doses you actually log — in any browser, free for your first 3 days.

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