BPC-157 vs SS-31.
Quick Verdict
BPC-157 is a body protective compound primarily researched for injury recovery, gut healing, tissue repair, reduced inflammation, while SS-31 is a mitochondrial peptide studied for energy, recovery, neuroprotection. A key distinction: BPC-157 has FDA approval status.
Side-by-Side Analysis
| Dimension | BPC-157 | SS-31 |
|---|---|---|
| Category | Body Protective Compound | Mitochondrial Peptide |
| Mechanism | Promotes angiogenesis, collagen deposition, and modulates growth factors for accelerated healing. | Mitochondrial protection. |
| Half-Life | ~4 hours | ~4 hours |
| Route | SubQ | SubQ |
| Typical Dose | 250–500 mcg | 4000–4000 mcg |
| Frequency | 7x/wk | 7x/wk |
| Evidence Level | Preclinical | Moderate |
| Indexed Studies | 20+ indexed | 20+ indexed |
| FDA Status | Approved | Research Only |
| Lowest Price | $39.99 / 10mg via Amino Club | $75.00 / 10mg via Ascension Peptides |
| Per-mg Cost | $4.00/mg | $7.50/mg |
Mechanism of Action Comparison
How BPC-157 Works
BPC-157 BPC-157 is a synthetic peptide derived from a protein found in gastric juice, studied in animal research for accelerating injury recovery and gut tissue repair.
Promotes angiogenesis, collagen deposition, and modulates growth factors for accelerated healing. Acts on multiple repair pathways simultaneously including tendon, ligament, muscle, gut lining, and nerve tissue.
How SS-31 Works
SS-31 SS-31 (Elamipretide) is a mitochondria-targeting peptide studied for protecting heart and muscle cells from energy failure, currently in FDA Fast Track development for heart failure.
Mitochondrial protection. Selectively concentrates in the inner mitochondrial membrane where it stabilizes cardiolipin for efficient electron transport chain function.
Key Mechanistic Difference
BPC-157 operates as a body protective compound, while SS-31 functions as a mitochondrial peptide — these are fundamentally different pharmacological approaches.
Research Evidence
BPC-157
20 studies- BPC-157 tendon, ligament, and gut healing effectsComprehensive review demonstrating potent tendon, ligament, and gut healing effects across multiple preclinical models.…Preclinical
- Stable gastric pentadecapeptide BPC 157 gastrointestinal tract healingRobert et al. demonstrate BPC-157 heals GI ulcers, fistulas, and inflammatory bowel lesions in rats via cytoprotective p…Preclinical
- BPC-157 accelerates Achilles tendon healing in ratsStaresinic et al. show BPC-157 accelerates healing of transected Achilles tendons, enhancing tendon fibroblast outgrowth…Preclinical
SS-31
20 studies- SS-31 (Elamipretide) clinical trials overviewSzeto (Br. J. Pharmacol.): Comprehensive review of elamipretide mechanism and clinical trial results in heart failure, m…Moderate
- Elamipretide stabilizes cardiolipin and cristae structureBirk et al. (Pharmaceuticals): Detailed mechanism review showing elamipretide binds cardiolipin, stabilizes mitochondria…Preclinical
- Elamipretide attenuates age-related cardiac protein modificationsStudy demonstrating elamipretide can reverse age-associated post-translational heart protein modifications, restoring mi…Preclinical
Vendor Pricing
· Affiliate links · Prices verified 2026BPC-157
4 vendorsSS-31
1 vendorAffiliate disclosure: PeptiDex may earn a commission from purchases via vendor links at no extra cost to you. See our methodology.
Frequently Asked Questions
Can I take BPC-157 and SS-31 together?▼
No direct interaction data is available for this specific pair. They target different receptor systems, suggesting they could potentially be combined, but no published protocol validates this combination.
Which has more research evidence — BPC-157 or SS-31?▼
BPC-157 has 20 indexed studies (highest evidence: Preclinical). SS-31 has 20 indexed studies (highest evidence: Moderate). Both have comparable research coverage.
What is the price difference between BPC-157 and SS-31?▼
At current verified vendor prices, BPC-157 starts at $4.00/mg while SS-31 starts at $7.50/mg. Prices vary by vendor and vial size — see the full vendor comparison below.
Which is better for injury recovery — BPC-157 or SS-31?▼
Both are researched for injury recovery. BPC-157 addresses this via injury recovery, gut healing, tissue repair, reduced inflammation. SS-31 approaches it through energy, recovery, neuroprotection. The optimal choice depends on your specific research protocol and which mechanism aligns with your objectives.
Is BPC-157 or SS-31 FDA-approved?▼
BPC-157 has FDA approval (or is derived from an FDA-approved compound). SS-31 is a research compound without FDA approval for human use. FDA status reflects regulatory evaluation — not necessarily superiority for all research applications.
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Shared Research Goals
Research Use Only — Not Medical Advice
This comparison is provided for educational and research purposes only. It does not constitute medical, prescribing, or treatment advice. Clinical data cited here is sourced from published peer-reviewed trials and FDA labels. Consult a qualified healthcare professional before making any decisions about medications or research compounds. PeptiDex is an informational resource and does not sell pharmaceutical products.