Collagen Peptides
UnregulatedAlso known as: Hydrolyzed Collagen, Collagen Hydrolysate, Type I/III Collagen
Structural & SkinLast reviewed: April 28, 2026
Bioactive peptide fragments derived from hydrolyzed collagen protein. The most commercially successful peptide supplement category, with a global market exceeding $5 billion. Available in Types I, II, III, and marine-sourced variants.
Mechanism of Action
Provides bioavailable proline, glycine, and hydroxyproline — amino acids critical for collagen synthesis. Dipeptides (Pro-Hyp, Hyp-Gly) are absorbed intact and stimulate fibroblast activity, promoting endogenous collagen production in skin, joints, and connective tissue.
Common Uses
- Skin elasticity and hydration
- Joint health and mobility
- Hair and nail strength
- Gut lining support
- Bone density support
Known Risks
- Generally well-tolerated
- Mild GI discomfort in some users
- Allergic reactions (rare, especially marine-sourced)
- Heavy metal contamination risk in low-quality products
- Efficacy debated — some studies industry-funded
Regulatory Status
Classified as a dietary supplement under DSHEA. Not FDA-approved for any medical indication. Widely available OTC without prescription. No regulatory restrictions.
Common Protocols
Protocol information is for educational reference only. Dosing varies significantly by individual, condition, and physician guidance. Always work with a licensed healthcare provider.
Oral (powder/capsule)
Typical Dose
10–20 g daily
Frequency
Once daily
Cycle Length
Ongoing — no cycling needed
Mix powder in coffee, smoothies, or water. Effects typically noticed after 4–8 weeks. Type I/III for skin and hair; Type II for joints. Marine collagen has higher bioavailability.
Related Compounds
Research References
This information is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any peptide therapy. Data is compiled from published research and regulatory sources and may not reflect the most recent developments.