Some sources for more information
https://www.ncbi.nlm.nih.gov/pubmed/26362110
The effect of oral collagen peptide supplementation on skin moisture and the dermal collagen network: evidence from an ex vivo model and randomized, placebo-controlled clinical trials.
Oral collagen peptide supplementation significantly increased skin hydration after 8 weeks of intake
The oral supplementation with collagen peptides is efficacious to improve hallmarks of skin aging.
© 2015 The Authors. Journal of Cosmetic Dermatology Published by Wiley Periodicals, Inc.
https://www.ncbi.nlm.nih.gov/pubmed/30681787
J Drugs Dermatol. 2019 Jan 1;18(1):9-16.
"Preliminary results are promising for the short and long-term use of oral collagen supplements for wound healing and skin aging. "
Oral Collagen Supplementation: A Systematic Review of Dermatological Applications
Choi FD, Sung CT, Juhasz ML, Mesinkovsk NA.
Guillerminet, Fanny; Beaupied, Hélène; Fabien-Soulé, Véronique; Tomé, Daniel; Benhamou, Claude-Laurent; Roux, Christian; Blais, Anne (2010-03-01).
"Hydrolyzed collagen improves bone metabolism and biomechanical parameters in ovariectomized mice: An in vitro and in vivo study".
Bone. 46 (3): 827–834. doi:10.1016/j.bone.2009.10.035. ISSN 8756-3282. PMID 19895915.
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https://www.ncbi.nlm.nih.gov/pubmed/23949208 Skin elasticity
Department of Dermatology, University of Kiel, Germany
Skin Pharmacol Physiol. 2014;27(1):47-55. doi: 10.1159/000351376. Epub 2013 Aug 14.
Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study.
Proksch E1, Segger D, Degwert J, Schunck M, Zague V, Oesser S.
Author information
Department of Dermatology, University of Kiel, Germany
ORIGINAL ARTICLE
Year : 2015 | Volume : 4 | Issue : 1 | Page : 47-53
Effects of a nutritional supplement containing collagen peptides on skin elasticity, hydration and wrinkles 1
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5383229/
Daily oral consumption of hydrolyzed type 1 collagen is chondroprotective and anti-inflammatory in murine posttraumatic osteoarthritis
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0174705
Daily oral consumption of hydrolyzed type 1 collagen is chondroprotective and anti-inflammatory in murine posttraumatic osteoarthritis
Qurratul-Ain Dar ,Eric M. Schott ,Sarah E. Catheline ,Robert D. Maynard,Zhaoyang Liu,Fadia Kamal,Christopher W. Farnsworth,John P. Ketz,Robert A. Mooney,Matthew J. Hilton,Jennifer H. Jonason,Janne Prawitt,,Michael J. Zuscik
Published: April 6, 2017 . https://doi.org/10.1371/journal.pone.0174705
https://www.tandfonline.com/doi/full/10.1080/19390211.2018.1461726?src=recsys
Effectiveness of a Dietary Supplement Containing Hydrolyzed Collagen, Chondroitin Sulfate, and Glucosamine in Pain Reduction and Functional Capacity in Osteoarthritis Patients
Jordi Puigdellivol , MD,Carme Comellas Berenger , MD,Miguel Ángel Pérez Fernández , MD,Juan M. Cowalinsky Millán , MD,Christian Carreras Vidal
https://www.tandfonline.com/doi/abs/10.1185/030079908X291967?src=recsys
24-Week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain
Kristine L. Clark,Wayne Sebastianelli,Klaus R. Flechsenhar,Douglas F. Aukermann,Felix Meza,Roberta L. Millard, show all
Pages 1485-1496 | Accepted 29 Feb 2008, Published online: 15 Apr 2008
https://www.tandfonline.com/doi/full/10.1080/10408398.2015.1038377?src=recsys
Biological effect of hydrolyzed collagen on bone metabolism
Audrey Daneault,Janne Prawitt,Véronique Fabien Soulé,Véronique Coxam &Yohann Wittrant
Pages 1922-1937 | Received 06 Mar 2015, Accepted 02 Apr 2015, Accepted author version posted online: 15 May 2015, Published online:10 Mar 2017