1. What is BPC-157?
BPC-157 stands for “Body Protection Compound.” It is a small, lab-made peptide based on part of a natural protein found in stomach fluid that helps protect the stomach lining. Scientists have studied it since the early 1990s, mostly to understand how the body repairs itself after injury. Unlike many peptides, it appears to survive stomach acid, which is a big part of why researchers find it interesting.
A short history
BPC-157 was first developed by a research team led by Predrag Sikirić at the University of Zagreb. They noticed that certain parts of stomach fluid seemed to protect against damage, isolated the protective compound, and copied its active 15-amino-acid piece so it could be made in a lab. Since then, several hundred animal studies have examined it across many different types of injury and stress.
2. What it's being studied for
Everything below comes from animal studies (mostly rats). Whether the same holds true in people has not been shown.
Promising findings
- Faster tendon healing — in animal studies, cut Achilles tendons repaired more quickly
- Better muscle and ligament recovery after injury
- Protection for the stomach and intestines against damage
- Faster bone healing in animal fracture models
- Some protection for the brain in stroke and trauma models
- Works even when swallowed, which most peptides do not
Open questions & risks
- Almost all the evidence is from animals — there are no finished large human trials
- Most studies come from a single research group, so the findings still need wider confirmation
- We don't yet know what long-term use does
- Because it helps grow new blood vessels, scientists have raised a theoretical concern that it could also feed unwanted growths such as tumors — unproven, but an open question
- Local irritation at the injection site has occasionally been seen in animals
- Quality varies a lot between research suppliers, so purity is not guaranteed
3. How it works
In animal studies, BPC-157 seems to help the body build new blood vessels, bringing more blood and nutrients to an injury so it can heal faster. It also appears to nudge several of the body's natural repair signals at once, rather than acting through a single on/off switch. Its knack for surviving stomach acid is part of what makes it stand out from other peptides.
The technical detail
- Boosts VEGFR2 signalling, driving new blood-vessel growth (angiogenesis)
- Modulates the nitric-oxide (NO) system, affecting blood flow and vessel-wall function
- May increase growth-hormone receptor activity in tendon cells — a proposed route for tendon healing
- Interacts with the dopamine and serotonin systems in animal models
- No single receptor has been pinned down — its effects look broad (“pleiotropic”)
4. Is it safe and legal?
- Not approved as a medicine anywhere in the EU or USA — sold only as a research chemical (Research Use Only)
- Banned in competitive sport at all times (WADA category S0)
- Human safety data is essentially missing, and long-term effects are unknown
- Should only be handled by qualified people in a proper laboratory setting
5. Storing & mixing it
| State | How to store it | How long it keeps |
|---|---|---|
| Freeze-dried powder, unopened | -20 °C, dry, away from light | up to 24 months |
| Freeze-dried powder, short-term | 2–8 °C (fridge) | several weeks |
| Mixed (in solution) | 2–8 °C, away from light | 14–28 days |
| In transit | Room temperature is fine short-term (≤ 7 days) | — |
- Mix with bacteriostatic or sterile water
- Swirl gently — don't shake (shaking can damage the peptide)
- Pour the water down the side of the vial, not straight onto the powder
- Don't freeze and thaw it repeatedly — it loses potency
6. The research in detail
For readers who want the underlying data — the key studies, the chemistry, and the full source list.
Key studies
| Study | Model | What was measured | Result |
|---|---|---|---|
| Sikirić et al., 1993 | Rat, gastric lesion | Stomach-lining repair | Significantly smaller lesions |
| Krivic et al., 2008 | Rat, Achilles tendon | Tendon healing | Faster repair |
| Chang et al., 2011 | Rat, tendon cells | GH receptor activity | Increased activity |
| Seiwerth et al., 2014 | Rats, various models | Blood-vessel growth | VEGFR2-driven effects |
| Gwyer et al., 2019 (Review) | Review article | Sports & tendon injuries | Summary of the animal evidence |
Chemical & physical data
- Type
- Linear 15-amino-acid peptide, unmodified
- Amino acid sequence
- GEPPPGKPADDAGLV
- Solubility
- Dissolves easily in water, bacteriostatic water and 0.9% saline
- pH stability
- Stable across the body's normal pH range; notably resistant to stomach acid
- Isoelectric point (pI)
- approx. 4.1
- Lab test methods
- HPLC, ESI-MS
Sources & references
- Sikirić P. et al. (1993). Journal of Physiology Paris
- Sikirić P. et al. (2010). Current Pharmaceutical Design, 16(10)
- Seiwerth S. et al. (2014). Current Pharmaceutical Design, 20(7)
- Sikirić P. et al. (2014). Current Neuropharmacology, 12(2)
- Chang C.H. et al. (2011). Journal of Applied Physiology, 110(3)
- Boban-Blagaic A. et al. (2005). European Journal of Pharmacology, 512(2-3)
- Krivic A. et al. (2008). Journal of Orthopaedic Research, 26(10)
- Staresinic M. et al. (2003). Journal of Orthopaedic Research, 21(6)
- Sikirić P. et al. (1999). Digestive Diseases and Sciences
- Sebecić B. et al. (1999). Bone, 24(3)
- Tudor M. et al. (2010). Regulatory Peptides, 160(1-3)
- Gwyer D. et al. (2019). Cell and Tissue Research, 377(2)
- Sikirić P. et al. (2018). Current Pharmaceutical Design, 24(18) — discussion of theoretical risks
7. Common questions
How is BPC-157 used in studies?
In animal research it's usually given by injection (under the skin or into the abdomen) or by mouth. The fact that it still works when swallowed is one of its more unusual features.
How long does it last once mixed?
Stored cold (2–8 °C) and away from light, roughly 2–4 weeks. Repeated freezing and thawing shortens that.
How is it different from TB-500?
Both are studied for tissue repair but work differently. BPC-157 mainly works by helping build new blood vessels, while TB-500 mainly helps cells move and reorganise. Researchers sometimes compare the two side by side.
Why are there so few human studies?
It isn't an approved medicine and can't be patented in the usual way, so there's little funding for large human trials. That's why almost all the evidence is still from animals.
What purity should research peptides have?
Look for at least 98% (the best suppliers reach 99%), confirmed by HPLC testing, with a Certificate of Analysis (CoA) available.
8. Important note
Everything here is for scientific, educational and research purposes only. BPC-157 is a research chemical, not an approved medicine. It is not meant to diagnose, treat, cure or prevent any disease, and it is not for human use. It should only be handled by qualified people in a controlled laboratory. It is sold in line with the rules for research chemicals.