Compound Library

Peptide / Recovery

Thymosin Beta-4 Fragment (TB-500 Fragment)

Shorter active fragment of TB-500 containing the core actin-binding sequence. Faster onset than full TB-500, similar healing benefits. Lower cost and more targeted action on tissue repair and angiogenesis.

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Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.
Reference dose2–5mg SubQ 2–3x per week.
Half-life2 hours
Risk flaglow
Regulatory noteResearch-only flag

Side effects and watch-outs

  • Injection site reaction
  • Mild fatigue
  • Headache
  • Well tolerated overall