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.
Why this score?
- 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
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.
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?
Is collagen safe to take every day?
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.
