Tissue repair research
Wolverine Stack
Also written BPC-157 and TB-500, bpc157 tb500, BPC-157 + TB-500
The Wolverine stack is the name given to BPC-157 and TB-500 combined, after the comic character who heals fast. It is discussed for tendon, ligament and muscle injuries. Neither is an approved medicine, the research on each is mostly preclinical, and the one study of the combination found no added benefit.
It is the best known pairing in the repair category, and its origin is traceable. In May 2016 Ben Greenfield published a piece on BPC-157 titled “healing the body like Wolverine”. Within days, readers in his comment thread were pairing it with TB-500. In October 2021 Jay Campbell wrote it up as “the Wolverine Healing Stack”, crediting Greenfield, and by 2023 it was on Reddit and in clinic marketing. No clinician designed it and no researcher named it: it grew out of a headline and a comment section.
The compounds
BPC-157
The most studied research peptide for tissue repair, and almost none of it in people
A synthetic chain based on a protein found in stomach fluid. Most of its research is preclinical work on connective tissue and gut lining.
Everything on BPC-157
TB-500
A fragment of a repair protein, with no human trial of its own
A lab-made copy of part of a protein the body already makes, which helps cells travel to the site of an injury. It is usually described as the more body-wide of the two.
Everything on TB-500How it is thought to work
The pairing has a tidy story behind it, and the tidiness is worth examining.
The argument for combining them
The two are usually described as working on different halves of the same problem. BPC-157 is associated with growing blood supply into damaged tissue, which matters because tendons barely have any, and that is most of why they heal so slowly. TB-500 is associated with helping repair cells travel to where the damage is. Build the road, then move the traffic.
It is a genuinely satisfying explanation. It is also the entire case. The one preclinical study that tested the pair against each compound alone (Bicer 2026) found the combination added nothing, and no study has tested it in people. Two mechanisms that sound complementary are a hypothesis, not a finding.
What the research actually is
Almost all of the tendon work on BPC-157 is preclinical, in surgically cut Achilles tendons. Treated tendons healed faster than untreated ones, repeatedly and across several groups, which is a real signal. It is also an injury inflicted in a lab, and a tendon that was cleanly severed rather than slowly worn out over years of running.
TB-500 is the one to read carefully. There are human trials on that molecule, which sounds reassuring until you read them: they used the full-length natural protein and they were run for dry eye and for venous leg ulcers. Not one of them involved a tendon. The fragment sold under this name has preclinical work behind it and nothing in people for tendon injury.
Why they are mentioned together
The reasoning repeated everywhere is that the two work at different scales: BPC-157 locally, TB-500 more broadly through the body, so together they cover both. It is a tidy story and it is why the pairing spread. It is also, as far as the research shows, backwards: the preclinical results cited for BPC-157 came from studies that gave it systemically, not at the injury. The 'local plus body-wide' story is not what those studies tested.
Straight answer
The numbers quoted online have no study behind them.
Pages that quote amounts for this stack give no source, and they do not agree with each other. The trail for one widely repeated schedule leads to a veterinary product insert and a bodybuilding forum. The research behind both compounds is real and mostly preclinical, which is normal for this category. What is not normal is presenting a routine as established when nobody can say where it came from.
The research areas it is discussed for
Each has its own page on what studies have examined, covering every peptide, not just these two.
Worth knowing first
- Injuries need a diagnosis
- A partial tear and a full one feel similar from the outside and are managed completely differently. A full rupture is a surgical question.
- The stack has never been tested as a stack
- The one preclinical comparison found no added benefit from the pair over either alone, and no human study exists. The complementary-mechanism story remains a story.
- The ibuprofen advice online is invented
- In preclinical studies, daily anti-inflammatories made tendons heal worse. What has never been measured is what happens when they are combined with a peptide, so any percentage quoted for that interaction came from nowhere. Never stop a prescribed medicine on the strength of a website.
- Neither is approved, and both are banned in sport
- Neither is an approved medicine, and products sold under these names have no pharmaceutical manufacturing standard behind them, which is its own risk. Both are prohibited in sport at all times.
The evidence behind Wolverine Stack
One study has tested the two together: Bicer 2026, a preclinical Achilles repair study, reported that the combination "did not confer additional benefits compared to either agent alone", with TB-500 alone showing the clearest advantage on tendon strength. Nothing has tested the pairing in people. Everything else this stack is known for comes from preclinical studies of one compound at a time, and the single human safety report below involved two people.
Studied in people
1 of 1The only kind that directly answers whether it works in humans.Preclinical studies
2 of 2Preclinical results do not automatically hold in people.Journal of Applied Physiology · 2011
PreclinicalThe promoting effect of pentadecapeptide BPC 157 on tendon healing involves tendon outgrowth, cell survival, and cell migration
Chang C-H, Tsai W-C, Lin M-S, Hsu Y-H, Pang J-HS
The most-cited result behind the stack's reputation. In a preclinical tendon model, BPC-157 increased cell survival, migration and outgrowth. One compound, no comparison with TB-500 and no combination arm.
The promoting effect of pentadecapeptide BPC 157 on tendon healing involves tendon outgrowth, cell survival, and cell migration: source for Wolverine Stack (opens in a new tab)Read the paperJournal of Orthopaedic Research · 2010
PreclinicalPentadecapeptide BPC 157 (PL 14736) improves ligament healing in the rat
Cerovecki T, Bojanic I, Brcic L, et al.
A preclinical knee-ligament injury model followed for 90 days, with improved healing on several measures. One of the longer-running preclinical studies and part of why the compound is associated with connective tissue.
Pentadecapeptide BPC 157 (PL 14736) improves ligament healing in the rat: source for Wolverine Stack (opens in a new tab)90 days
Read the paper
Every source behind this page63 more
- Thymosin beta4: actin-sequestering protein moonlights to repair injured tissuesGoldstein AL, Hannappel E, Kleinman HK · Trends in Molecular Medicine · 2005Review
- Injectable Peptide Therapy: A Primer for Orthopaedic and Sports Medicine PhysiciansMayfield CK, Bolia IK, Feingold CL, et al. · American Journal of Sports Medicine · 2026Review
- Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic PerformanceMendias CL, Awan TM · Sports Medicine · 2026Review
Everything we cite for Wolverine Stack, including preclinical work and early research. Each link goes to the source itself, so you can judge it rather than take our word for it.
Questions people ask
What is the Wolverine stack?
The name for BPC-157 and TB-500 combined, after the comic character known for healing quickly. It is discussed for tendon, ligament and muscle injuries. Neither is an approved medicine, and the evidence behind them is mostly preclinical.
Is the Wolverine stack proven to work?
No. The research on each compound is mostly preclinical, and the one study that tested the two together found no added benefit over either alone. It has not been tested in people.
Has the combination been studied in people?
No. No human trial has tested BPC-157 and TB-500 together, and their interactions have not been studied. Neither compound has an established human dose, because neither is an approved medicine.
Is it legal?
Neither is an approved medicine in the US. BPC-157 was removed from FDA's Category 2 list in April 2026 without being added to Category 1, so it is not approved for compounding either. Both are prohibited in sport. We do not sell either and link to no seller.
Your DNA and the research on these compounds
Your report reads the DNA file you already have against the published research on 31 peptides, marker by marker, and says what that research does and does not show.