P-15 Peptide Explained
P-15 is a man-made snippet of collagen—think of it like a chemical message that tells your body's repair cells "build bone here." Doctors use it in bone grafts for spinal surgery, dental work, and orthopedic procedures because it actually works. It's been around for over 20 years with solid clinical proof showing it can work better than using your own bone in some situations.
Here's how your body responds to it: Your skeleton's main building material is collagen, and P-15 mimics a specific part of it—essentially a cellular welcome mat. When surgeons place P-15 onto a bone graft material, it acts like a signal flag that your bone-building cells recognize immediately. These cells (called osteoblasts and stem cells) stick to P-15 like they're meant to be there, which triggers them to wake up and get to work. Once attached, these cells start multiplying, transforming into specialized bone-builders, and pumping out the proteins needed to form new bone. P-15 basically turns the graft into an active construction site instead of just inert material sitting there. Your body does all the heavy lifting—P-15 just gives it the right instructions and a good place to start.
Dosage Information
Typical Dose
Used as a bone graft material — not self-administered
Frequency
Single application during surgical procedure
Administration
Surgical implantation by orthopedic or dental surgeon
Half-Life
N/A hours
Notes
FDA-cleared medical device/bone graft substitute. Not available for self-administration. This entry documents P-15's significance as a clinically proven collagen-derived peptide for bone and joint regeneration.
Why this matters
Surgical implant material; not systemically circulated.
Protocol cycle
Where does P-15 Peptide sit?
See how this peptide compares across all 150 peptides in our database.
Evidence Score
0.14
Compound Data
Molecular Formula
C59H100N20O19
Molecular Weight
1393.50 g/mol
IUPAC Name
(2S)-2-[[(2S)-2-[[2-[[(2S)-2-[[(2S)-5-amino-2-[[2-[[(2S)-2-[[(2S,3S)-2-[[2-[[(2S)-5-amino-2-[[(2S)-1-[2-[[(2S)-1-[(2S,3R)-2-[(2-aminoacetyl)amino]-3-hydroxybutanoyl]pyrrolidine-2-carbonyl]amino]acetyl]pyrrolidine-2-carbonyl]amino]-5-oxopentanoyl]amino]acetyl]amino]-3-methylpentanoyl]amino]propanoyl]amino]acetyl]amino]-5-oxopentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]acetyl]amino]-3-methylbutanoyl]amino]-3-methylbutanoic acid
PubChem CID
9898640Potential Side Effects
P-15 Peptide discussions
Quick Facts
- Administration
- Surgical implantation by orthopedic or dental surgeon
- Typical Dose
- Used as a bone graft material — not self-administered
- Frequency
- Single application during surgical procedure
- References
- 0 curated + 1 from PubMed
- Evidence Score
- 0.1 / 100
Frequently Asked Questions about P-15 Peptide
What is P-15 Peptide?
P-15 is a synthetic 15-amino-acid peptide derived from type I collagen that promotes bone and cartilage regeneration by enhancing cell attachment proliferation and differentiation at wound sites. It is the active component in PepGen P-15 — an FDA-cleared bone graft substitute used in spinal fusion dental bone grafting and orthopedic procedures. P-15 has one of the strongest clinical evidence bases of any bone and joint regeneration peptide with over 20 years of clinical use and multiple randomized controlled trials demonstrating superior outcomes compared to autograft bone in certain indications.
How does P-15 Peptide work?
P-15 mimics a specific cell-binding domain of type I collagen — the primary structural protein of bone and cartilage extracellular matrix. By presenting this collagen attachment sequence on an anorganic bone mineral carrier P-15 promotes the adhesion of osteoblasts osteoprogenitor cells and mesenchymal stem cells to the graft material. Cell attachment through P-15 activates integrin-mediated signaling cascades that stimulate cell proliferation differentiation into bone-forming cells and production of new bone matrix proteins including collagen type I osteocalcin and bone morphogenetic proteins. P-15 essentially creates a bioactive scaffold that instructs the body's own repair cells to populate and regenerate the defect site without requiring exogenous growth factors.
What is the recommended dosage for P-15 Peptide?
The typical dose is Used as a bone graft material — not self-administered. Single application during surgical procedure. Administration: Surgical implantation by orthopedic or dental surgeon. FDA-cleared medical device/bone graft substitute. Not available for self-administration. This entry documents P-15's significance as a clinically proven collagen-derived peptide for bone and joint regeneration.
What are the side effects of P-15 Peptide?
Risks associated with surgical procedure. Infection at implant site (uncommon). Graft failure (rare). Generally very well tolerated — similar safety profile to autograft
What is the P-15 Peptide cycle protocol?
P-15 Peptide is typically cycled single application. Surgical implantation, not self-administered
Questions reflect common community inquiries. This is not medical advice.