Safety Profile
Overall safety rating: Generally Safe
Collagen Peptides Side Effects & Safety
This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer
Potential Side Effects
- Mild bloating or digestive discomfort in some individuals
- Unpleasant aftertaste with some marine collagen products
- Rare allergic reactions in those with fish or shellfish allergies (marine collagen)
- Feeling of fullness due to protein content
Drug & Supplement Interactions
- No significant drug interactions documented
- May theoretically compete with other protein supplements for absorption if taken simultaneously
- Those with calcium sensitivities should note some collagen products contain added calcium
Maximum Dose
Do not exceed: Up to 15 g/day is well-tolerated in studies; no established upper limit
References
- de Miranda RB, Weimer P, Rossi RC. (2021). Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis. International Journal of Dermatology. DOI PubMed
- Proksch E, Segger D, Degwert J, et al. (2014). Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study. Skin Pharmacology and Physiology. DOI PubMed
- Asserin J, Lati E, Shioya T, Prawitt J. (2015). The effect of oral collagen peptide supplementation on skin moisture and the dermal collagen network. Journal of Cosmetic Dermatology. DOI PubMed
- Hexsel D, Zague V, Schunck M, et al. (2017). Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails. Journal of Cosmetic Dermatology. DOI PubMed
- Bolke L, Schlippe G, Gerss J, Voss W. (2019). A collagen supplement improves skin hydration, elasticity, roughness, and density: results of a randomized, placebo-controlled, blind study. Nutrients. DOI PubMed