Collagen Peptides
Collagen peptides are hydrolyzed collagen protein fragments — primarily types I, II, and III — absorbed as di- and tripeptides that accumulate preferentially in connective tissues. The strongest clinical evidence supports improved skin elasticity, reduction in joint pain (particularly in athletes and osteoarthritis populations), and modest benefits for bone mineral density. Vitamin C co-ingestion meaningfully enhances endogenous collagen synthesis, and consuming the dose around exercise appears to maximize tendon and cartilage uptake based on pharmacokinetic modeling. Evidence for muscle hypertrophy is weaker than for whey or essential amino acids, as collagen has a low leucine content and incomplete essential amino acid profile.
Evidence last reviewed: 04 Apr 2026
Verify this peptide on CertiPep
certipep.ch — anonymous purity & characterization service
Moderate evidence supports collagen peptides for joint pain relief and skin elasticity improvement, particularly when combined with vitamin C. However, the evidence for muscle growth is weaker due to its incomplete amino acid profile.
Joint pain / tendon collagen synthesisAthletes; older adults with joint pain · RCTsModerate
Reduces activity-related joint pain; when taken pre-exercise with vitamin C, promotes tendon collagen synthesis.
Endurance, Longevity & Recovery Stack
Built from your profile goals, constraints, & current training/recovery context. This stack includes evidence-backed supplements selected for practical fit, & you can fine-tune doses & timing in edit mode.
Forms & usage▾
Take 10-15 grams daily, ideally with vitamin C, around exercise for best results.
Safety & trade-offs3▾
Incomplete amino acid profile — not a substitute for complete protein sources
Marine collagen carries shellfish allergy risk — use bovine or plant-derived if allergic
Some products contain heavy metals — prioritise third-party tested sources
●High ●Moderate ● Low / note