Thymosin Beta-4 · Tβ4
Systemic recovery — muscles, blood vessels, inflammation.
FDA
Reclassified '26
WADA
Banned
HALF-LIFE
~Days (estimated)
ROUTE
SubQ or IM injection
SCHEDULE
2× weekly
In Plain English
TB-500 works systemically — it travels through your entire body to reduce inflammation and repair tissue everywhere at once. Use it for widespread or hard-to-reach injuries where a local peptide alone isn't enough.
Status & Legality
What do these mean?People with multiple or widespread injuries
Athletes recovering from systemic inflammation
Anyone stacking with BPC-157 for comprehensive healing
Active or suspected malignancy (pro-angiogenic effects — unconfirmed risk in humans)
Pregnancy or nursing
Injection site infection
TB-500 is a synthetic version of Thymosin Beta-4, present in nearly all human and animal cells. Unlike BPC-157's localized action, TB-500 travels systemically — promoting cell migration, new blood vessel formation, and reducing chronic inflammation body-wide. It's the go-to peptide for widespread or multi-site injuries.
Fatigue during loading
Headaches
Nausea
Injection site irritation
Theoretical tumor promotion concern (not confirmed in humans)
Running TB-500 solo for localized injuries without adding BPC-157
Skipping off-cycle breaks — 6 weeks on, 2–4 weeks minimum off
Exceeding 5 mg doses without medical supervision
BPC-157 — synergistic combination, not a conflict
GH peptides — healing acceleration stacks well
No documented adverse drug interactions in current literature
TB-500 is most powerful as the systemic half of a BPC-157 stack. Running it solo for localized injuries is less efficient. The WADA ban makes this one to research carefully if you're a tested athlete.
BPC-157
The top healing peptide — gut, tendons, joints.
IPAMORELIN
Cleanest GH secretagogue — minimal cortisol, strong pulse.
KPV
Anti-inflammatory gut peptide — IBD, skin, wound healing.
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Stats
Sources & Studies
Goldstein AL. et al., Expert Opin Biol Ther, 2012