Peptide Name
BPC-157
Updated April 2026
Written by Garret Grant
Founder & Lead Researcher · B.S. Civil Engineering, UCLA
Last updated: April 2026
Complete Dosing & Safety Guide for BPC-157, a Tissue Repair Peptide Frequently Discussed Alongside TB-500, covering SubQ and oral dosing schedules, reconstitution math, mechanistic rationale, and evidence limitations.
Half-life
<30 minutes
Dose range
250-500 mcg per dose
Status
Not FDA-approved
Developer
N/A (research compound)
Need to calculate reconstitution and dosing units? Use the calculate injection units.
Peptide Name
BPC-157
Use Case
Research users commonly explore BPC-157 for soft-tissue healing and gut-repair support.
Aliases
Body Protection Compound-157, Gastric Pentadecapeptide BPC 157, PL-14736, PLD-116, Bepecin
Category / Class
Tissue Repair / Cytoprotective Peptide
Half-Life
<30 minutes (hepatic metabolism; Vasireddi et al. systematic review)
Dosing Frequency
1-2 times daily (subcutaneous or oral)
Dose Range
250-500 mcg per injection (community protocol)
Titration Schedule
250 mcg daily -> 250-500 mcg daily -> 500 mcg 2x daily as needed
Common Vial Sizes
5mg, 10mg
Route of Administration
Subcutaneous (SubQ), Intramuscular (IM), Oral
Regulatory Status
Not FDA-approved. Research compound. Phase I trial registered (NCT02637284) but results not submitted. Category 2 bulk drug substance in FDA context. Prohibited by WADA under S0 (non-approved substances).
Developer
N/A
Key Stat
Over 30 years of preclinical research (544+ articles, 1993-2024) with tissue-repair findings across muscle, tendon, ligament, bone, gut, and neural models - with no identified toxic dose (no LD1) in tested species.
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BPC-157 (Body Protection Compound-157) is a synthetic pentadecapeptide derived from a protective protein naturally present in human gastric juice and is one of the most widely researched tissue-repair peptides in the research peptide community. Literature summaries commonly reference more than 544 published articles spanning over 30 years of preclinical investigation.

Structurally, BPC-157 is a chain of 15 amino acids (molecular weight about 1,419 Da) derived from a larger protective protein found in the stomach. Unlike most peptides, which are destroyed by stomach acid, BPC-157 is naturally stable in the digestive environment — which is why it can be taken orally in addition to being injected. This oral viability is unusual among research peptides and is particularly relevant for gut-focused protocols.
One important limitation: despite over 30 years of animal research, human clinical data for BPC-157 is very limited. A Phase I safety trial (NCT02637284) was registered in 2015 with 42 healthy volunteers but was cancelled in 2016 without publishing results. The only other human-level data commonly cited is a small Phase II study in ulcerative colitis patients and a small retrospective report on knee-pain patients. This means the dosing protocols on this page are primarily based on animal research and community practice, not large human clinical trials.
BPC-157 is not FDA-approved for any indication, is discussed as a Category 2 bulk drug substance in FDA compounding context, and is prohibited by WADA. This page is educational and research-reference only.
BPC-157 appears to support tissue healing through several pathways at once — not just one mechanism, but a combination of effects that work together. In plain terms, it helps by: (1) building new blood vessels to bring nutrients to the injury site, (2) managing the body's nitric oxide system to control inflammation and blood flow, (3) boosting growth signals that trigger cells to repair damaged tissue, and (4) protecting cells from further damage during the recovery process. Here's how each pathway works:

When tissue is injured, one of the first things the body needs is a fresh blood supply to deliver repair materials to the damaged area. BPC-157 appears to accelerate this process by boosting the body's signals for building new blood vessels — a process scientists call angiogenesis. Specifically, it increases VEGF (vascular endothelial growth factor), which is the primary chemical signal that tells blood vessel cells to grow and form new pathways to the injury site. Think of VEGF as a construction foreman calling in the road-building crew. The result in animal studies is faster restoration of blood flow to damaged tissue, which supports every other stage of healing.
Nitric oxide (NO) is a molecule your body uses to control blood vessel dilation, inflammation, and tissue signaling. Too little NO restricts blood flow; too much can drive damaging inflammation. In animal studies, BPC-157 appears to act as a balancing agent — supporting NO production when it's too low and dampening it when it's excessive. This two-way regulation may help create a more stable healing environment, especially in gut and cardiovascular injury models.
Healing damaged tendons, ligaments, and muscles requires your body to activate growth signals that tell repair cells to multiply and build new tissue. In animal studies, BPC-157 appears to turn up several of these growth signals simultaneously — including growth hormone receptors and pathways (ERK1/2, p38 MAPK) that tell fibroblasts (the cells responsible for building connective tissue) to produce more collagen. Collagen is the structural protein that gives tendons and ligaments their strength. By boosting multiple repair signals at once rather than just one, BPC-157 may create a broader healing response — which is why it's commonly discussed for tendon, ligament, and joint recovery contexts.
Beyond repair, BPC-157 also appears to protect existing cells from further damage during injury — a property researchers call cytoprotection (literally "cell protection"). In animal studies, this protective effect has been observed across the gut, liver, muscles, brain and nervous system, and heart. Part of how it works is by dialing down inflammatory molecules (cytokines) that, while necessary for the initial immune response, can cause collateral tissue damage if they stay elevated too long. Think of it as calming the fire department after the fire is out, so they stop spraying water on undamaged rooms.
What makes BPC-157 unusual compared to most compounds is that it doesn't just target one receptor or one process. Instead, it appears to create a broadly supportive healing environment — improving blood supply, boosting structural repair, and protecting cells from damage all at the same time. This multi-pathway approach is the reason it shows up in such a wide range of injury models in the research literature.
Initiation
Weeks 1-2
250 mcg once daily
Assess tolerance. For musculoskeletal targets, inject near injury site when feasible; for gut/systemic targets, abdominal SubQ is common.
Standard Therapeutic
Weeks 3-4
250-500 mcg once daily
Most common community range. Can be split into two doses (125-250 mcg AM + PM).
Acute Injury / Intensive
Weeks 1-6
500 mcg twice daily
Higher-end community protocol for significant injury or post-operative recovery contexts.
Oral Protocol
Weeks 4-8
250-500 mcg 1-2x daily
Commonly used for gut-focused protocols; typically taken on an empty stomach.
Important Dosing Notes
Evidence level: Current dosing paradigms are community-derived and extrapolated from preclinical ranges; optimal human dosing has not been established in large controlled clinical trials.
Injection site matters: Localized peri-tendinous or peri-articular SubQ placement is commonly used for musculoskeletal targets, while abdominal SubQ is common for systemic and GI protocols.
Oral viability: Unlike most peptides, BPC-157 is gastric-stable and can be used orally; oral bioavailability is lower for systemic targets but may support direct GI mucosal exposure.
No titration required: Typical protocols start directly in the 250-500 mcg therapeutic range from day one.
Timing and missed dose: No strict time-of-day requirement; split protocols often separate doses by roughly 12 hours. If a dose is missed, resume next scheduled dose without doubling.
Cycle guidance: Common cycles: 2-4 weeks for mild injury, 4-8 weeks for severe/post-op, and up to 8-12 weeks for chronic contexts with off periods between cycles.
Vial Size: 5mg
BAC Water: 2 mL
Concentration: 2,500 mcg/mL
250 mcg: 0.10 mL (10 units)
500 mcg: 0.20 mL (20 units)
750 mcg: 0.30 mL (30 units)
Vial Size: 5mg
BAC Water: 5 mL
Concentration: 1,000 mcg/mL
250 mcg: 0.25 mL (25 units)
500 mcg: 0.50 mL (50 units)
750 mcg: 0.75 mL (75 units)
Vial Size: 10mg
BAC Water: 2 mL
Concentration: 5,000 mcg/mL
250 mcg: 0.05 mL (5 units)
500 mcg: 0.10 mL (10 units)
750 mcg: 0.15 mL (15 units)
Vial Size: 10mg
BAC Water: 5 mL
Concentration: 2,000 mcg/mL
250 mcg: 0.125 mL (12.5 units)
500 mcg: 0.25 mL (25 units)
750 mcg: 0.375 mL (37.5 units)
Vial Size: 10mg
BAC Water: 10 mL
Concentration: 1,000 mcg/mL
250 mcg: 0.25 mL (25 units)
500 mcg: 0.50 mL (50 units)
750 mcg: 0.75 mL (75 units)

Critical limitation: BPC-157 has no completed human clinical safety trials. Current safety framing is derived primarily from preclinical animal studies plus limited case-level and community reporting.
Preclinical safety profile: Across decades of animal research, reviews report favorable tolerability with no identified lethal dose. Researchers also found no consistent evidence of birth defects (teratogenic effects), DNA damage (genotoxic effects), or severe allergic reactions (anaphylaxis) in the models tested.
Injection-site reactions: Most commonly reported effects are mild local redness, irritation, or swelling that usually resolve and can be reduced by rotating sites.
Oral or nasal tolerability: Oral protocols may cause mild GI discomfort in some users; nasal formats may cause transient irritation, sneezing, or cough.
Theoretical concern for cancer patients: Because BPC-157 may promote new blood vessel growth (angiogenesis), there is a theoretical concern that it could support tumor growth in someone with active cancer — tumors depend on new blood vessels for their own nutrient supply. No direct evidence of BPC-157 causing cancer exists in available studies, but this theoretical risk means people with active cancer or a recent cancer history should exercise particular caution and consult a healthcare provider.
Hormonal profile: BPC-157 is not generally associated with endocrine suppression or post-cycle therapy requirements in community use reports.
Grey-market risk: A practical risk is product quality variance in unregulated supply chains, including contamination, potency mismatch, and impurity exposure.
The table below summarizes the most commonly cited BPC-157 research. Notice that most entries are preclinical (animal studies) or literature reviews — not human clinical trials. This distinction matters when evaluating what BPC-157 can and cannot be expected to do.
Vasireddi et al. (Orthopaedic Sports Medicine Systematic Review)
Systematic review • 2025 publication
36 studies (35 preclinical, 1 clinical)
Reported enhanced angiogenesis and repair signaling with favorable preclinical safety profile; half-life context under 30 minutes.
Gwyer et al. (Cell Tissue Research)
Review • 2019 publication
Musculoskeletal healing literature
Described BPC-157 potential in tendon, ligament, and muscle repair; evidence base largely rodent.
Sikiric et al. program (multiple publications)
Primary preclinical research • 1993-2024
Rat models across organ systems
Broad cytoprotective and regenerative findings across GI, CNS, cardiovascular, and musculoskeletal injury models.
ClinicalTrials.gov NCT02637284
Phase I • Registered 2015; cancelled 2016
42 healthy volunteers
Safety and PK study was registered but no results were published after cancellation.
PL-14736 ulcerative-colitis program
Phase II • Early 2000s
Ulcerative colitis patients
Guide literature cites efficacy signal and acceptable safety profile; complete modern trial dataset is limited.
Retrospective chronic knee-pain cohort
Retrospective • Published in review context
12 patients
7 of 12 reported pain relief longer than 6 months after a single intra-articular injection.
Philp et al. (FASEB Journal)
Preclinical • 2004 publication
Rat wound model
Topical/IP BPC-157 increased re-epithelialization by 42% at 4 days and 61% at 7 days versus controls, with increased collagen deposition and angiogenesis.

BPC-157 has broad preclinical breadth but limited clinical depth. The published research is impressively consistent across animal injury models and multiple administration routes (subcutaneous, intramuscular, oral, topical), but the key gap is that no large controlled human trial has confirmed these effects in people. What this means for you: the existing evidence suggests BPC-157 has real biological activity, but we don't yet have the kind of rigorous human data that would establish optimal dosing, confirm long-term safety, or quantify expected outcomes. The dosing protocols on this page reflect community practice informed by animal-study dosing, not clinically validated human protocols.
Lyophilized (powder)
-20C (freezer)
Long-term (years)
Lyophilized (powder)
2-8C (refrigerator)
Months
Lyophilized (powder)
15-25C (room temp)
Weeks (shipping tolerance)
Reconstituted
2-8C (refrigerator)
Up to 30 days
Reconstituted (frozen aliquots)
-20C (freezer)
3-4 months
Protect from light, use bacteriostatic water for multi-dose handling, minimize freeze-thaw cycles, and discard any cloudy or discolored solution.
Origin
BPC-157: Synthetic fragment of gastric protective protein
TB-500: Synthetic version of thymosin beta-4
GHK-Cu: Naturally occurring tripeptide-copper complex
Primary Mechanism
BPC-157: Builds new blood vessels, balances inflammation, and protects cells during repair
TB-500: Helps repair cells move to injury sites and mobilizes stem cells for deep tissue recovery
GHK-Cu: Uses copper to stimulate collagen production and tissue remodeling
Half-Life
BPC-157: <30 minutes
TB-500: <2 hours (plasma)
GHK-Cu: ~30 minutes
Route
BPC-157: SubQ, IM, Oral
TB-500: SubQ
GHK-Cu: SubQ, Topical
Dose Range
BPC-157: 250-500 mcg 1-2x daily
TB-500: 2-5 mg 2x weekly
GHK-Cu: 1-2 mg daily (injectable)
Best For
BPC-157: Localized tissue repair, GI healing
TB-500: Systemic healing and deep tissue recovery
GHK-Cu: Skin/wound healing and collagen focus
Oral Viability
BPC-157: Yes
TB-500: No
GHK-Cu: No (topical route used)
Clinical Trials
BPC-157: Phase I/II (limited); extensive preclinical evidence
TB-500: Phase II programs
GHK-Cu: Phase II skin/wound contexts
FDA Status
BPC-157: Not approved
TB-500: Not approved
GHK-Cu: Not approved
Unique Advantage
BPC-157: Oral viability plus broad preclinical tissue-repair evidence
TB-500: Systemic recovery and migration-driven repair profile
GHK-Cu: Skin and collagen-focused copper pathway support
BPC-157 and TB-500 are often paired as a tissue-repair combination in community protocols, while GHK-Cu is usually used for collagen- and skin-focused goals.
BPC-157 is usually selected for localized tendon, ligament, joint, and GI contexts, whereas TB-500 is used for broader systemic recovery paradigms.
Reconstitution concentration and dose frequency differ substantially across all three compounds and should be calculated carefully.
See the TB-500 protocol and GHK-Cu protocol for compound-specific guides.
Before combining compounds, read the full stacking safety guide on PepPal.
Stack 1
Compounds: BPC-157 (250-500 mcg daily) plus TB-500 (2-5 mg twice weekly). This stack combines localized BPC-157 repair signaling with broader systemic TB-500 regenerative support.
Timing model: BPC-157 is commonly dosed daily near the target tissue while TB-500 is used twice weekly; both may be administered on shared dosing days with separate syringes.
View stack protocolStack 2
Compounds: BPC-157 (250-500 mcg daily) with CJC-1295/Ipamorelin (commonly 100 mcg each at bedtime) for combined tissue-repair and GH-pulse support context.
See the compound-specific See CJC-1295 with DAC protocol for additional context.
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The most common starting dose is 250 mcg subcutaneously once daily for 1-2 weeks, with many protocols then moving to 500 mcg daily or 250 mcg twice daily based on response and goals.
Published reviews describe a plasma half-life of under 30 minutes, meaning BPC-157 clears from your bloodstream quickly. However, the healing effects it triggers — like growth signals and inflammation control — can continue working well after the peptide itself is gone, similar to how a thermostat adjustment keeps working after you've walked away.
Community reports often describe noticeable pain reduction and improved mobility within 5-10 days, with tendon, ligament, and structural healing improvements typically discussed over 2-8 week cycles. Keep in mind: these timelines come from individual user reports and animal research, not from large controlled human trials — so individual results vary and no specific outcome is guaranteed.
Common setups include 5 mg + 2 mL (2,500 mcg/mL) or 5 mg + 5 mL (1,000 mcg/mL). Inject BAC water down the vial wall, swirl gently, do not shake, and refrigerate mixed solution. Use https://www.peppal.app/calculator for custom concentration math.
No. BPC-157 is not FDA-approved for any indication. It is discussed as a Category 2 bulk drug substance in FDA compounding context and is prohibited by WADA under S0 non-approved substances.
Most commonly reported effects are mild injection-site irritation. The broader risk profile in real-world settings often relates to unregulated product quality and contamination risk rather than demonstrated peptide toxicity in preclinical studies.
BPC-157 is usually used for localized tissue and GI repair contexts, TB-500 for broader systemic regenerative protocols, and GHK-Cu for collagen and skin-focused outcomes. BPC-157 is also notable for oral viability.
The most common research vials are 5 mg and 10 mg lyophilized powder formats.
Popular options include 5 mg + 2 mL for low injection volume or 5 mg + 5 mL for easier syringe math. For 10 mg vials, 2 mL, 5 mL, and 10 mL are all commonly used depending on concentration preference.
Animal studies report exposures up to 10 mcg/kg without identified lethal dose in published safety context. Community protocols typically remain at 250-500 mcg per dose, occasionally up to 1,000 mcg/day for acute contexts.
Store mixed solution upright at 2-8C and use within about 30 days. Lyophilized powder is more stable for longer storage, and frozen aliquots may be used short-term when freeze-thaw cycling is minimized.
Yes. BPC-157 is unusual among peptides in that it is described as stable in gastric juice, supporting oral protocols, particularly in gut-focused applications.
Use the PepPal calculator for exact dose-to-unit conversions.
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<2 hours
Tissue Repair / Actin Sequestration
View protocol~30 minutes
Collagen Remodeling
View protocol~2 hours
GH Secretagogue
View protocol~6-8 days
GHRH Analog
View protocolReference guide coming soon
Joint Protection
View protocolStack protocol
BPC-157 + TB-500
View protocolConvert this protocol into exact units and save it in Pep Pal with the dose to units converter.
The information on this page is for educational and research reference purposes only. BPC-157 is not FDA-approved and is discussed as a Category 2 bulk drug substance. It is prohibited by WADA. No compounds discussed on this site are intended for human consumption. This is not medical advice.
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