Collagen is a naturally occurring protein that forms a crucial component of connective tissues in the body, including skin, bones, tendons, and cartilage. It is most abundantly found in animal products such as bones and skin, and traditionally, it has been consumed through bone broths or gelatin-based foods. In recent years, collagen supplements have gained popularity, primarily due to claims that they can support skin elasticity, joint health, and overall vitality. Research into collagen's heal

How many studies on Collagen are available?

NutriVouch references 531 human studies on Collagen, all peer-reviewed and indexed on PubMed.

Is Collagen effective for Skin Health?

For Skin Health, Collagen has an effectiveness score of 7/10 — strong evidence supporting clinical use. Based on 11 relevant studies.

Is Collagen effective for Collagen Support?

For Collagen Support, Collagen has an effectiveness score of 7/10 — strong evidence supporting clinical use. Based on 20 relevant studies.

Is Collagen effective for Joint Health?

For Joint Health, Collagen has an effectiveness score of 6/10 — moderate evidence — works in some populations. Based on 16 relevant studies.

Is Collagen effective for Bone Health?

For Bone Health, Collagen has an effectiveness score of 5/10 — moderate evidence — works in some populations. Based on 17 relevant studies.

Is Collagen effective for Hair & Nails?

For Hair & Nails, Collagen has an effectiveness score of 5/10 — moderate evidence — works in some populations. Based on 17 relevant studies.

Confidence level

Strong evidence

531 studies

Collagen

Absorption

✦Take with vitamin C to enhance absorption, preferably on an empty stomach. For some, taking it with a meal may help reduce any potential digestive discomfort.

Daily Dose

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Common dose: 2.5–15 grams daily.

RDA: No official RDA established.

Upper limit: Not established.

Best form: Hydrolyzed collagen (collagen peptides), Undenatured type II collagen (UC-II).

Timing: Can be taken with or without food.

Collagen is generally well-tolerated, but it's important to verify the purity and source. Consult a healthcare provider if you have specific health conditions or are taking other supplements.

Effects

Food Sources

Bone broth7-10g per cup
Chicken skin3.3g per 100g
Pork skin (cracklings)11-17g per 28g
Fish skin1-1.5g per 28g
Beef tendons6.4g per 100g