PepEvolutionTB-500 Fragment
The active Tβ4 17-23 fragment of TB-500 — less studied and less available than the full peptide with a thinner evidence base.
Verdict — D · Speculative
A derivative compound with less data and less availability than the full TB-500 peptide. For buyers who want thymosin beta-4 axis activity, full TB-500 from a COA-verified vendor is the better-supported choice at this time.
Overview
TB-500 Fragment refers to the active thymosin β4 (17-23) sub-sequence proposed to carry the G-actin sequestering activity of the full TB-500 peptide. The hypothesis is that this shorter fragment retains key activity with a simpler synthesis, but the human evidence base is considerably thinner than for full TB-500 and sourcing is more limited. The theoretical cell-proliferation concern present for TB-500 carries over.
PepScore Breakdown — the four axes
Evidence
35% weightHow strong is the published human science?
Sourcing & COA
30% weightOur moatCan a buyer obtain an independently-verified, high-purity version? — our proprietary layer.
Safety & Risk
25% weightWhat is the real-world harm potential?
Practicality
10% weightHow easy is it to actually run a verified version?
Sources & Citations
Every claim cites a primary source. Citations are machine-audited against NCBI — see methodology.
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