Collagen & Peptide NutritionNutrition and collagen guides

Nutrition guide

The 14 Best Collagen Powders, Tested and RD-Approved

EDITORIAL SOURCES Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy . We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with live

EDITORIAL SOURCES

Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy. We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with lived experience, and information from top institutions.

Resources

  1. Wu M et al. Biochemistry, Collagen Synthesis. StatPearls. September 4, 2023.
  2. Al-Atif H. Collagen Supplements for Aging and Wrinkles: A Paradigm Shift in the Field of Dermatology and Cosmetics. Dermatology Practical & Conceptual. February 2, 2022.
  3. Pu S et al. Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis. Nutrients. April 26, 2023.
  4. Zaraa I et al. Nail Supplements: When, How, and Why? Skin Appendage Disorders. September 2024.
  5. Martínez-Puig D et al. Collagen Supplementation for Joint Health: The Link between Composition and Scientific Knowledge. Nutrients. March 8, 2023.
  6. Zare D et al. The Benefits and Applications of Lactobacillus plantarum in Food and Health: A Narrative Review. Iranian Journal of Public Health. October 15, 2024.
  7. Abrahams M et al. Effect of a Daily Collagen Peptide Supplement on Digestive Symptoms in Healthy Women: 2-Phase Mixed Methods Study. JMIR Formative Research. May 31, 2022.
  8. He H et al. The impact of medium-chain triglycerides on weight loss and metabolic health in individuals with overweight and obesity: A systematic review and meta-analysis. Clinical Nutrition. August 2024.
  9. Collagen. Cleveland Clinic. May 23, 2022.
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  11. Reyes-Izquierdo T et al. Dermaval™ inhibits glucose-induced neutrophil elastase activity in healthy subjects. Nutrition and Dietary Supplements. December 23, 2013.
  12. Baumann L et al. Clinical Relevance of Elastin in the Structure and Function of Skin. Aesthetic Surgery Journal. May 14, 2021.
  13. Rasmussen BF et al. Glycine, a Dispensable Amino Acid, Is Conditionally Indispensable in Late Stages of Human Pregnancy. The Journal of Nutrition. February 2021.
  14. Herring CM et al. Impacts of maternal dietary protein intake on fetal survival, growth, and development. Experimental Biology and Medicine. February 22, 2018.
  15. Khatri M et al. The effects of collagen peptide supplementation on body composition, collagen synthesis, and recovery from joint injury and exercise: a systematic review. Amino Acids. September 7, 2021.
  16. Bechara N et al. A Systematic Review on the Role of Vitamin C in Tissue Healing. Antioxidants. August 19, 2022.
  17. Schulze C et al. Impact of Specific Bioactive Collagen Peptides on Joint Discomforts in the Lower Extremity during Daily Activities: A Randomized Controlled Trial. International Journal of Environmental Research and Public Health. May 27, 2024.
  18. Zdzieblik D et al. Specific Bioactive Collagen Peptides in Osteopenia and Osteoporosis: Long-Term Observation in Postmenopausal Women. Journal of Bone Metabolism. August 31, 2021.
  19. Kviatkovsky SA et al. Collagen peptides supplementation improves function, pain, and physical and mental outcomes in active adults. Journal of the International Society of Sports Nutrition. August 8, 2023.
  20. Song H et al. Beneficial Effects of Collagen Hydrolysate: A Review on Recent Developments. Biomedical Journal of Scientific & Technical Research. July 24, 2017.
  21. Koikeda T et al. Effects of Peach (Prunus persica)-Derived Glucosylceramide on the Human Skin. Immunology, Endocrine & Metabolic Agents in Medicinal Chemistry. 2017.
  22. Farhan M. The Promising Role of Polyphenols in Skin Disorders. Molecules. February 15, 2024.
  23. Pouya Amin et al. Oral Hyaluronic Acid Supplement: Efficacy in Skin Hydration, Elasticity, and Wrinkle Depth Reduction. Journal of Drugs in Dermatology. September 1, 2025.
  24. Baba Y et al. Effects of l -Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study. Journal of Medicinal Food. April 16, 2021.
  25. Fatemeh G et al. Effect of melatonin supplementation on sleep quality: a systematic review and meta-analysis of randomized controlled trials. Journal of Neurology. January 8, 2021.
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  29. Wang H. A Review of the Effects of Collagen Treatment in Clinical Studies. Polymers. November 9, 2021.
  30. Kalman DS et al. The effect of oral hydrolyzed eggshell membrane on the appearance of hair, skin, and nails in healthy middle‐aged adults: A randomized double‐blind placebo‐controlled clinical trial. Journal of Cosmetic Dermatology. June 2020.
  31. Hexsel D et al. Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails. Journal of Cosmetic Dermatology. August 8, 2017.
  32. Sangsuwan W et al. Four-weeks daily intake of oral collagen hydrolysate results in improved skin elasticity, especially in sun-exposed areas: a randomized, double-blind, placebo-controlled trial. Journal of Dermatological Treatment. January 23, 2020.
  33. de Miranda RB et al. Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta‐analysis. International Journal of Dermatology. December 2021.
  34. König D et al. Specific Collagen Peptides Improve Bone Mineral Density and Bone Markers in Postmenopausal Women—A Randomized Controlled Study. Nutrients. January 16, 2018.
  35. The Science Behind Collagen: Does It Work? Hackensack Meridian Health. February 4, 2025.
  36. Choi FD et al. Oral Collagen Supplementation: A Systematic Review of Dermatological Applications. Journal of Drugs in Dermatology. January 1, 2019.
  37. Rath L. Can Collagen Supplements Help Arthritis? Arthritis Foundation. December 21, 2022.

Additional Sources

  • Physiology, Connective Tissue. StatPearls. September 19, 2021.
SUPPLEMENTAL FIELD FILE

Notes to carry forward.

Source-derived references linked through this guide’s public topic markers.

03
QUESTIONS FROM THE TRAIL

Related questions

Q01Do collagen supplements really work?

A 2019 literature review that included 11 studies involving 805 people found that supplemental collagen helps improve skin elasticity, hydration, and collagen density. It may also be useful for wound healing. A 2021 literature review also found collagen supplements beneficial for joint health. Confirming these benefits and exploring the full effects requires further research.

Source trail · www.medicalnewstoday.com →
Q02Where are Thorne vitamins made?

Most Thorne products are manufactured in the company’s facility in Summerville, South Carolina, though ingredients may be sourced from around the globe.

Source trail · www.healthline.com →
Q03Does FullWell Prenatal have folic acid?

Yes, each 8-capsule serving of FullWell’s Women’s Prenatal Multivitamin contains 800 mcg of folate, which is about 227% of the DV for people who are pregnant.

Source trail · www.healthline.com →