Worked in Rats what about people?
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Tendon and injury recovery

Tendons heal slowly because they get little blood. That is why so many people look to peptides here.

The short version

We found no human trial showing a peptide heals a tendon. The animal results are strong. The human results are thin. The only item here with human trials is collagen with vitamin C, tested alongside rehab exercise.

The grades

C

BPC-157

35 animal and lab studies. Three tiny human studies, about 30 people in all, none with a comparison group. The most studied of the group, and still unproven in people.

read the full page →
C

TB-500

A lab-made piece of thymosin beta-4, a protein your body makes. A 2026 review mapped 80 studies. The human ones were on eyes and skin wounds, using the full protein. Only one looked at TB-500 itself. No human tendon trials.

C

GHK-Cu

A copper peptide found in your blood. The human studies are on skin creams. For ligaments there is a rat study, and the benefit faded once treatment stopped.

B

Collagen + vitamin C

A food supplement with human trials. Small studies found better collagen building when taken shortly before tendon exercise, and less pain in Achilles tendon patients doing calf rehab. Bigger trials are running. It has only been tested alongside loading exercise, never on its own.

The popular stack

C

BPC-157 + TB-500

Often called the "Wolverine" stack.

This is the pairing you'll see everywhere. We found no human study of the two together. The stack grade is C because both parts are C.

Check it in the stack builder →

Sources

  1. Vasireddi et al., HSS Journal, 2025. BPC-157 in sports medicine, systematic review. PubMed
  2. McGuire et al., 2026. Thymosin beta-4 and TB-500 scoping review. Preprint
  3. Fu et al., 2015. GHK-Cu in a rat ACL model. PubMed
  4. Praet et al., Nutrients, 2019. Collagen peptides in Achilles tendinopathy. Journal
  5. Buchalski et al., 2026. Collagen and tendon outcomes, systematic review. Journal of Functional Morphology and Kinesiology. Journal
  6. van Dam et al., Trials, 2023. JUMPFOOD trial plan. PMC

Last checked November 11, 2026.