Both peptides share an evidence grade of D. The right choice depends less on the data and more on what you're trying to do — BPC-157 for injury recovery, TB-500 for soft-tissue recovery.
Strong, repeated results in rodents. No published controlled human trials confirming the effect.
The most-studied area in animals; the peptide was first characterised for gastric protection.
Popular real-world use, but supported only by self-reports.
Repeated rodent studies on dermal, corneal and cardiac wounds — using full TB-4, not the marketed fragment. No controlled human trials of TB-500 itself.
A 2004 Nature paper showed TB-4 protected mouse heart cells after infarct. Promising preclinical signal; not yet translated to humans.
Popular in performance circles, often stacked with BPC-157. Supported only by self-reports.
Because there are no large human studies, the side-effect profile in people is essentially unknown. Animal studies report relatively low toxicity, but that does not establish human safety, purity, or long-term risk. Products sold online are unregulated, so contamination and mislabelling are real concerns. People who are pregnant, breastfeeding, have cancer, or take other medicines should be especially cautious.
Long-term safety in humans is unknown — there are no large clinical trials of TB-500. Short-term reports from users include injection-site reactions and occasional lethargy. A specific theoretical concern is that TB-4 promotes angiogenesis (blood-vessel growth), which could in principle accelerate the growth of existing tumours; this has not been demonstrated clinically but is a reasonable reason for caution in anyone with cancer or a cancer history. Products sold as "TB-500" are unregulated research chemicals — contamination, mislabelling and dose-by-dose variation are real risks. People who are pregnant, breastfeeding, immunocompromised, or taking other medicines should be especially cautious.
Both peptides share an evidence grade of D. The right choice depends less on the data and more on what you're trying to do — BPC-157 for injury recovery, TB-500 for soft-tissue recovery.
Pepwyse comparison pages are generated from the same structured data behind each peptide profile. Want a different head-to-head? Use the compare picker or ask BPC-157 directly via the Ask-Peppy button. Not medical advice — see how we grade evidence.