1. Analgesic efficacy of collagen peptide in knee osteoarthritis: a meta-analysis of randomized controlled trials
https://josr-online.biomedcentral.com/articles/10.1186/s13018-023-04182-w
2. Impact of Specific Bioactive Collagen Peptides on Joint Discomforts in the Lower Extremity during Daily Activities: A Randomized Controlled Trial
https://www.mdpi.com/1660-4601/21/6/687https://www.mdpi.com/1660-4601/21/6/687
3. The efficacy and safety of low-molecular-weight collagen peptides for joint pain in patients with osteoarthritis: A randomized, double-blind, placebo-controlled study
https://www.sciencedirect.com/science/article/pii/S1756464623003924
4. Efficacy of specific bioactive collagen peptides in the treatment of joint pain
https://www.oarsijournal.com/article/S1063-4584(16)00389-7/fulltext
5. Improvement of activity-related knee joint discomfort following supplementation of specific collagen peptides https://cdnsciencepub.com/doi/10.1139/apnm-2016-0390https://cdnsciencepub.com/doi/10.1139/apnm-2016-0390
6. The Influence of Specific Bioactive Collagen Peptides on Knee Joint Discomfort in Young Physically Active Adults: A Randomized Controlled Trial
https://pmc.ncbi.nlm.nih.gov/articles/PMC7915677/