Peptide Guides
Important
Neither BPC-157 nor TB-500 is an approved medicine in any country. Neither holds a licence from the MHRA in the United Kingdom, the EMA in Europe, or the FDA in the United States. This guide explains a marketing term and the evidence behind it. It is not medical advice, and nothing within it constitutes a recommendation to use either compound. Products supplied through this site are intended for laboratory research use only.
Quick answer
- The Wolverine Stack is a marketing name for BPC-157 and TB-500 taken together, named after the Marvel character's healing ability.
- The name comes from podcasts and forums, not from any study.
- No human trial of the combination exists. The one controlled animal study, published in 2026, found no additional benefit from combining them over either compound alone.
- Each compound separately has no full published controlled human trial showing benefit.
- Both compounds are banned in sport at all times.
What Is the Wolverine Stack?
The Wolverine Stack is an informal name for the combination of BPC-157 and TB-500. It is not a scientific term, a standardised formulation, or a protocol from any study. The two compounds are chemically unrelated: one is a short lab-made peptide copied from a protein found naturally in the stomach, the other a copied section of thymosin beta-4, a natural healing-associated peptide of 43 amino acids. What joins them is not chemistry but reputation, since both acquired followings as "healing peptides" on the strength of animal research.
Where Did the Wolverine Stack Name Come From?
The name refers to Wolverine, the Marvel character whose defining ability is healing from any injury. Exactly who first attached it to this pair of compounds is hard to document. It became established in online fitness and peptide communities rather than in any scientific literature, and it has stuck because it is memorable. The name promises a comic-book outcome, and it existed before any study of the combination did.
What Does the Research Say About the Wolverine Stack?
| Claim made for the stack | BPC-157 evidence | TB-500 evidence | BPC-157 + TB-500 evidence |
|---|---|---|---|
| Tendon and ligament repair | Animal studies only | Animal studies; clearest results in the one 2026 rat study | One rat study: no additional benefit shown |
| Muscle recovery | Animal studies only | No human evidence | None |
| Joint and injury repair | Three small uncontrolled human reports | No human data | No human data |
| Added or "synergistic" effect | Not applicable | Not applicable | Not demonstrated in the only controlled test |
An uncontrolled 2021 knee report included four patients who received BPC-157 together with full-length thymosin beta-4.1 Thymosin beta-4 and TB-500 are different molecules, so those four cases are not human evidence for the Wolverine Stack as defined on this page.
Each compound has a genuine animal literature, no full published controlled human trial of efficacy, and a reputation that runs far ahead of both. The stack then adds a further assumption, that the two have additive or synergistic effects. The only direct controlled study did not demonstrate any additional benefit from combining them.
Which Peptides Are in the Wolverine Stack?
BPC-157's research record, including its three small human reports, its abstract-only trials from the 2000s and its registered trials, is set out in the complete BPC-157 guide and catalogued study by study in our record of BPC-157 clinical trials and human studies. TB-500's background, a veterinary product name attached to a fragment of thymosin beta-4, a peptide that went through twenty years of pharmaceutical trials without approval, is covered in what TB-500 is, and the two compounds are compared directly in BPC-157 vs TB-500.
Has BPC-157 + TB-500 Been Studied Together?
Almost never, and the results of the exceptions are not what the marketing implies.
In humans, the combination has never been tested in any trial. The closest thing in the published literature comes from one Florida clinic. Four patients there received knee injections of BPC-157 together with thymosin beta-4, and three of the four recalled improvement when telephoned afterwards.1 There was no control group, no measurement instrument and no way to attribute anything to the peptides, and the study's own authors describe it as preliminary. Those patients also received full-length thymosin beta-4 rather than TB-500, so even this report is not evidence about the stack as sold.
In animals, one controlled study has tested the actual stack idea. A 2026 study cut and repaired the Achilles tendons of 32 rats and compared BPC-157, TB-500, the two combined, and no treatment over four weeks.2 The authors reported three things. TB-500 alone improved tendon strength and tissue quality. BPC-157 alone produced smaller improvements that did not reach statistical significance. And the combination did not show any additional benefit over either compound on its own. It was also a small study: eight rats per group, split between the mechanical and the tissue analyses, and the authors describe their findings as preliminary and exploratory.
That is the entire evidence base for the Wolverine Stack as a stack. Everything else written about it is an inference from two separate animal literatures, neither of which has been confirmed in people.
Is the Wolverine Stack Banned in Sport?
For any tested athlete, the Wolverine Stack is two prohibited substances rather than one. BPC-157 is named on the 2026 WADA Prohibited List under S0, and thymosin beta-4 and its derivatives, with TB-500 named as the example, are prohibited under S2.3.3 Both apply at all times, in and out of competition, and validated detection methods are published for both. Whether BPC-157 is banned in sport and TB-500's UK and WADA status each cover the detail, including strict liability.
Is the Wolverine Stack Legal in the UK?
Both compounds sit in the same UK position: neither is listed as a controlled drug, and neither has a UK marketing authorisation as a medicine. Genuine laboratory research products may fall outside medicines regulation, though classification depends on how a product is presented and intended to be used. Nothing about combining them changes that.
Common questions
What is in the Wolverine Stack?
BPC-157 and TB-500, two chemically unrelated research peptides sold together under a name borrowed from a comic-book character.
Is the Wolverine Stack the same as BPC-157 + TB-500?
Usually, yes. Wolverine Stack is an informal name most commonly used for BPC-157 and TB-500 together. It is not a standardised formulation, so what a product actually contains should be checked against its certificate of analysis rather than inferred from the name.
Does the Wolverine Stack work?
No human study has tested the combination for anything. The one controlled animal study found no additional benefit from the combination over either compound alone, and neither compound alone has controlled human evidence of benefit.2
Is the Wolverine Stack safe?
Unknown. Neither compound has a published human safety profile, and no study has examined the safety of taking them together. Unknown is not the same as safe.
Is the Wolverine Stack banned in sport?
Yes. Both of its components are prohibited by WADA at all times.3
BPC-157 + TB-500 Research Specification
The BPC-157 + TB-500 research bundle supplied through this site is the two research vials together: batch-tested BPC-157 and TB-500 as freeze-dried powder, each purity-tested by HPLC with a dated certificate of analysis per batch. We publish what each batch contains and make no claims about what the combination does; as this guide sets out, the one controlled study of the combination found no additional benefit from combining them.
Supplied for laboratory research use only. Not for human consumption.
References
- Lee E, Padgett B. Intra-Articular Injection of BPC 157 for Multiple Types of Knee Pain. Altern Ther Health Med. 2021;27(4):8-13. PubMed
- Biçer O, Adanir O, Güleryüz Y, et al. Effects of BPC-157 and TB-500 on Achilles tendon healing in rats: a histopathological and biomechanical study. Jt Dis Relat Surg. 2026;37(3):822-837. DOI
- World Anti-Doping Agency. Prohibited List 2026, effective 1 January 2026, categories S0 and S2.3. WADA