AMSTERDAM · EST. 2026
Onpeps
PEPTIDE DECISION INTELLIGENCE
Subscribe
← PEPTIDE LIBRARY
RECOVERYGRADE DSPECULATIVE / THIN

TB-500

Actin-sequestering peptide (Thymosin β4 fragment)

A synthetic fragment corresponding to the actin-binding region of Thymosin β4. Marketed for systemic repair and often stacked with BPC-157. Most published work studies the full Tβ4 protein rather than this fragment.

ALSO KNOWN AS Thymosin beta-4 fragment · Tβ4 17-23
REGULATORY STATUS · RESEARCH COMPOUND

Research compound — not approved for human use. Compounds in this category have not been approved for human use; availability is typically restricted to laboratory research.

§ EVIDENCE BASE
16
PUBLICATIONS
indexed in PubMed
1
REGISTERED TRIALS
listing it as an intervention
1
PHASE 2–4 TRIALS
reached later-stage testing
MECHANISMActin-sequestering peptide (Thymosin β4 fragment)
CATEGORYRecovery
EVIDENCE GRADED — Speculative / thin
STATUSResearch compound — not approved for human use
TYPICAL RECONSTITUTION5 mg vial + 2 mL BAC water
ROUTESubcutaneous — near the injury area where practical
COUNTS RETRIEVED2026-07-23 · re-run the PubMed query
§ DOCUMENTED DOSING
Loading2–2.5 mg twice weekly for 4–6 weeks
Maintenance2 mg once weekly
Cycle8–12 weeks, then a 4-week break

Ranges compiled from published protocols, not a clinical guideline. Convert a dose into syringe units with the dosage calculator.

FURTHER READING
A Comprehensive Guide to TB-500: Benefits and Uses
§ RELATED COMPOUNDS
RECOVERYB
Thymosin Beta-4
Actin-sequestering protein; cell migration and angiogenesis
RECOVERYD
BPC-157
Cytoprotective peptide; angiogenesis and growth-factor signalling
RECOVERYD
KPV
α-MSH C-terminal tripeptide; anti-inflammatory
NOT MEDICAL ADVICE

This page summarises how much a compound has been studied. A high publication count is not evidence that something works, is safe, or is legal to obtain where you live. Consult a qualified healthcare provider before acting on anything here.

THE WEEKLY BRIEF

Peptide intelligence, every Monday.

One concise email: the newest research, evidence updates, and quality signals — no hype, no spam.

Onpeps

Our mission is to make peptide research clear, credible, and usable for people who refuse to rely on hype.

EXPLORE
FOLLOW
PEPTIDE INFORMATION YOU CAN VERIFY© 2026 ONPEPS · AMSTERDAM, NETHERLANDS · NOT MEDICAL ADVICE