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Supplements & Herbs
Collagen Benefits: What the Evidence Actually Shows
Collagen is the most abundant protein in your body — and one of the most studied supplements for skin, joints, and connective tissue. Here's what the research supports, how to choose a quality source, and how to take it.
The Dr. Axe Score™
Scientific Evidence
8.0/10
Dozens of randomized trials on skin, joint, and bone outcomes.
Traditional Medicine
9.0/10
Bone broth and gelatin are foundational foods across ancient cultures.
Safety
9.0/10
Very well tolerated; it is essentially a food protein.
Clinical Usefulness
8.0/10
Easy to dose, affordable, and combines well with vitamin C.
Why this score?
Why Collagen Benefits scores 8.5 / 10
- Randomized trials show measurable gains in skin elasticity and hydration
- Consistent improvements in activity-related joint comfort
- Essentially a food — one of the safest supplements you can take
- Works synergistically with vitamin C for collagen synthesis
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Dr. Josh Axe Vitamin Advisor · 4–5 questions
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Collagen makes up roughly a third of the protein in your body — it is the structural framework of your skin, joints, bones, and gut lining. After age 25, you lose about 1% of it per year.
What is collagen?
Collagen is a long, triple-helix protein rich in the amino acids glycine, proline, and hydroxyproline. Hydrolyzed collagen (collagen peptides) is simply collagen broken into short chains your body absorbs easily — the form used in nearly all modern clinical trials.
Evidence-backed benefits
The strongest human evidence is for skin health and joint comfort. Randomized controlled trials using 2.5–10 grams of collagen peptides daily for 8–12 weeks show measurable improvements in skin elasticity, hydration, and dermal collagen density, and reduced activity-related joint pain in athletes and older adults.
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View the protocol →How to take it
Most studies use 10 grams of collagen peptides daily, taken any time of day, with vitamin C to support your body's own collagen synthesis. Bone broth remains the traditional, food-first source.
Frequently asked questions
How long does collagen take to work?
Most trials show measurable skin and joint changes at 8–12 weeks of consistent daily use. Give it a full 90 days before judging results.
Is collagen safe to take every day?
Yes — collagen is essentially a food protein and is very well tolerated. People with allergies to its source (fish, egg, bovine) should choose accordingly.
References
- Proksch E, et al. Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology. Skin Pharmacol Physiol. 2014.
- Clark KL, et al. 24-week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain. Curr Med Res Opin. 2008.