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BPC-157

C
Animal replicated
RouteInjectableGray-market only
C
Evidence grade: Animal replicated

Effect demonstrated in multiple animal studies; human data sparse or extrapolated. Grades summarize evidence quality, not whether a compound is appropriate, legal, or risk-free.

At a glance
What it is
Synthetic 15-amino-acid gastric pentadecapeptide; healing/repair peptide; injectable research chemical.
Why people use it
Tendon and Ligament · Gut and GI Mucosa · Muscle · Nerve · Bone · Cardiovascular
What the evidence supports
Three pilot studies total: IV safety (n=2), interstitial cystitis (n=12), knee pain (n=16). All by same physician (Lee et al.). No randomized controlled trials.
Key risks
Key risks: ACTIVE MALIGNANCY OR RECENT CANCER HISTORY.
If you only read one thing

The central tension of this chapter resolves to a credibility problem, not a mechanism problem. The mechanisms — VEGFR2 angiogenesis, fibroblast recruitment, GI cytoprotection, mast cell stabilization — are plausible and partially independently confirmed.

Route / form

Same compound, route-specific context. Switch forms instead of opening separate pages.

Evidence fit
Established

The route used in all three human pilot studies and in essentially all musculoskeletal animal research. Appropriate for tendon, ligament, muscle, and systemic anti-infla…

Route caveat
Goal-dependent route

The route used in all three human pilot studies and in essentially all musculoskeletal animal research. Appropriate for tendon, ligament, muscle, and systemic anti-infla…

Protocol anchor
Full dosing section

Open the full report at the dosing chapter for protocol rows, cycle context, and administration notes.

Typical dose snapshot
250 mcg/day
Once daily SubQ
4 route-matched protocol rows in dosing section.
BPC-157 acetate (injectable)

The standard form used in virtually all published animal research and in all three human pilot studies. Synthesized by solid-phase peptide synthesis as the acetate salt. This is the form to use for SubQ and IM injection protocols. Molecular weight and sequence are confirmed by mass spectrometry at 1,419.55 Da. Colorless solution after reconstitution.

The route used in all three human pilot studies and in essentially all musculoskeletal animal research. Appropriate for tendon, ligament, muscle, and systemic anti-inflammatory applications. Systemic distribution regardless of injection site — abdominal SubQ is standard. For specific musculoskeletal injuries, perilesional IM delivers higher local concentrations.

Direct injection near or into the injured structure. Higher local concentrations at the target tissue. Used in the Lee & Padgett knee pain pilot (intraarticular). More technically demanding and requires appropriate training. Not appropriate for DIY use in deep or complex anatomical targets.

BPC-157 free base (injectable)
Published literature
0human trials0human studies35animal0in vitro
Evidence reality check
Human evidence
No human studies
0 observational; RCT evidence not present in corpus.
Preclinical base
35 lab signals
35 animal; 0 in-vitro/mechanistic.
Best-supported use
Tendon/ligament healing
C grade · Moderate — preclinical. All animal; single lab dominant; no human RCT
Indication map
Supported / plausible / speculative / avoid
Supported
Gut mucosal healing
B-C grade · Moderate. Pilot only; no controls; same physician/journal
Supported
IV safety (human)
B grade · Early — favorable signal only. n=2; 2-day protocol; no long-term follow-up
Supported
Knee pain (human)
B grade · Early — promising, uncontrolled. No placebo; same physician; no replication
Avoid
ACTIVE MALIGNANCY OR RECENT CANCER HISTORY
BPC-157 drives VEGFR2-mediated angiogenesis — the same mechanism that tumors exploit to establish their blood supply. Active malignancy is an absolute contraindication. Recent cancer history (within the past 5 years) warrants discussion with an oncologist before any use. This is a theoretical risk based on the mechanism: no documented case of BPC-157 promoting tumor growth in humans exists in the published literature. But the mechanism is credible enough that the precautionary hard stop is appropriate.

BPC-157 is the compound the community has decided to use as if the animal evidence is sufficient proof of human efficacy — while the scientific establishment has largely declined to endorse it because the animal evidence, however consistent, comes overwhelmingly from one lab and has not been validated in human clinical trials. Both positions are defensible. What is not defensible is pretending the evidence is something it is not.

The central tension of this chapter resolves to a credibility problem, not a mechanism problem. The mechanisms — VEGFR2 angiogenesis, fibroblast recruitment, GI cytoprotection, mast cell stabilization — are plausible and partially independently confirmed. The 544-paper research base is real. The single-lab concentration is also real, and the 35:1 animal-to-human ratio in the systematic review is the clearest quantification of what that means in practice. The compound the community treats as the most proven healing peptide is the compound with the most concentrated research provenance problem in the entire field.

The favorable safety signal from the three published human pilots is meaningful. No adverse events across approximately 30 participants using IV, intravesicular, and intraarticular routes is a genuine positive data point. It does not establish long-term safety, does not confirm therapeutic efficacy via controlled trial, and does not resolve the cancer safety question raised by the pro-angiogenic mechanism — but it does suggest the compound is not immediately dangerous at the doses studied.

Properties
Active malignancy: hard stopWADA S0Injectable: extrapolated
  • ACTIVE MALIGNANCY OR RECENT CANCER HISTORYBPC-157 drives VEGFR2-mediated angiogenesis — the same mechanism that tumors exploit to establish their blood supply. Active malignancy is an absolute contraindication. Recent cancer history (within the past 5 years) warrants discussion with an oncologist before any use. This is a theoretical risk based on the mechanism: no documented case of BPC-157 promoting tumor growth in humans exists in the published literature. But the mechanism is credible enough that the precautionary hard stop is appropriate.
Molecular weight
1,419.55 Da; sequence: Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val
Discovery
Isolated from human gastric juice by Predrag Sikiric and colleagues, Zagreb, Croatia; first paper 1992
Typical dose
250-500 mcg/day SubQ or IM. Acute injury: 500 mcg twice daily. Oral (gut): 500 mcg-1 mg/day. Cycle 6-8 weeks on, 4 weeks off.
Route
SubQ injectable (most common); intramuscular (perilesional targeting); oral acetate (gut-specific); oral arginate (improved stability for systemic gut use)
Evidence
CAnimal replicated
Key risks
Active malignancy or cancer history (pro-angiogenic); active/recent tumor growth; pregnancy/breastfeeding
Last reviewed
May 2026
Research Profile
544+ papers screened in 2025 systematic review; 35 were animal studies; 1 was a clinical study
Unique Property
Stable in gastric acid for 24+ hours — unusual for a peptide; enables oral dosing for GI applications. Acetate oral bioavailability ~3% (rat data). Arginate oral bioavailability unverified in peer review.
Key Stacks
GLOW: BPC-157 10mg + TB-500 10mg + GHK-Cu 50mg. Wolverine Stack: BPC-157 + TB-500 (injury-focused, without GHK-Cu).
FDA Status May 2026
Removed from Category 2 April 22, 2026. Both acetate and free base forms scheduled for PCAC review July 23, 2026.
WADA Status
BANNED since 2022 under S0 (Non-Approved Substances) and S2 (Peptide Hormones). No TUE available. Detection window: up to ~4 days.
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