"Collagen Supplements: I Read Every Study (And Both Reviews Disagree)"

5 September 2026

A 2025 review pooled 23 collagen trials and then asked who paid for them. In the industry-funded trials, collagen improved skin; in the trials that took no industry money, it showed no effect. We read that review and a larger one published in January 2026, then checked four popular collagen products against both. Collagen is not nothing — but only one product here matches the dose and peptide the trials actually used, and it is one of the cheapest.

What we checked

Nothing here was sponsored or gifted.

What the label said

Vital Proteins Collagen Peptides. 20 g per serving, one ingredient: bovine hide collagen peptides [7]. At the bottom of the brand's own page is a footnote: "Various studies have suggested benefits." That is a more modest description than most of this aisle uses.

Vital Proteins Collagen Gummies. Four gummies contain 2.5 g of VERISOL, a branded collagen peptide [8]. On the label as transcribed by retailers, the first two ingredients after the collagen are corn syrup and sugar.

Ancient Nutrition Multi Collagen Protein. The front of the tub sells ten types of collagen from four sources [9]. US labels do not have to break out the amounts of each source. The Canadian version of this product does: one scoop is 10 g of bovine collagen and about 67 mg of fish (with similar small amounts of chicken, plus 500 mg of eggshell).

Nature's Truth Collagen Peptide Gummies. Two gummies give 120 mg of collagen [10]. The brand does not claim a trial; its copy says "optimal collagen support".

What the evidence shows

A big habit. Americans spent about $2 billion on collagen in 2025, according to National Geographic [11].

Two reviews, two answers. Myung and Park, in The American Journal of Medicine in 2025, pooled 23 randomised trials with 1,474 people [1]. Overall, collagen looked positive for hydration, elasticity and wrinkles. But split by funding, the industry-funded trials showed improvement and the independent ones showed none. A letter in the same journal later disputed how five of the seven "non-funded" trials were classified [2], and supplement trade bodies pushed back too [13].

The larger review, Ravindran and colleagues in Aesthetic Surgery Journal Open Forum in January 2026, pulled together 16 meta-analyses covering 113 trials and 7,983 people [3][12]. It found:

• Elasticity: improved, high certainty, across 20 trials.
• Hydration: improved, high certainty, across 19 trials.
• Roughness (skin texture): no significant effect.

The authors also rated the quality of what they pooled: of 16 meta-analyses, one was high quality, four were low and 11 were critically low [3].

Dose. Skin trials in this literature use between 2.5 g and 15 g of collagen a day [4][5][6]. The 20 g Vital Proteins powder sits comfortably in that range, so for elasticity and hydration it is supported. Reviewers mostly talk about nails and hair rather than wrinkles: 4.6 stars across 21,300 ratings at Sam's Club, with 82% five-star, when we checked in September 2026 [14].

The studied peptide. The wrinkle trials everyone quotes used VERISOL at 2.5 g. One was a randomised, double-blind, placebo-controlled trial of 114 women aged 45 to 65 over eight weeks [5]. The Vital Proteins gummies contain exactly that peptide at exactly that dose; the powder does not. The caveat: these trials come almost entirely from one research group, and VERISOL is made by a company called Gelita [4][5][6]. Good design, narrow source.

"Ten types". Collagen does not reach your skin intact. It is broken down into amino acids and short fragments before it is absorbed, so the numbered types are taken apart on the way. We found no trial testing whether more types work better than one.

The 120 mg gummy. Against a studied dose of 2,500 mg, 120 mg per two-gummy serving means about 21 servings — roughly 42 gummies a day — to match the wrinkle trials.

The verdict

Ranked by evidence: the Vital Proteins Collagen Gummies, at about $15, are the only product here with the studied dose of the studied peptide, though that evidence comes mainly from one manufacturer-linked group. The Vital Proteins powder is a reasonable buy if you want elasticity, hydration and a protein top-up. Ancient Nutrition is fine if you like it — just not for the ten types. Wait on Nature's Truth until someone runs a trial at that dose. And keep in mind that the biggest review rated most of its own pooled analyses critically low quality.

Collagen helps elasticity and hydration a little; buy the studied dose, not the marketing.

Worth knowing

• The strongest evidence for how your skin ages is still for sunscreen, not supplements.
• We could not find the trial behind Ancient Nutrition's "crow's feet after 4 weeks" claim on the pages we checked. That is not the same as saying it does not exist.
• The Canadian label is a different product size and type count from the US 10-type tub, so treat the ratio as indicative.
• The video does not quote a wrinkle-reduction percentage for VERISOL because the sources we read disagree on the number.
• Prices and review counts move. Supplements are not right for everyone — talk to a clinician about your own skin and health.

Watch the video

See the four-versus-42 gummies comparison and the full ranking in the video: Collagen Supplements: I Read Every Study (And Both Reviews Disagree).

Sources

1. Myung S-K, Park Y, "Effects of Collagen Supplements on Skin Aging: A Systematic Review and Meta-Analysis of Randomized Controlled Trials", The American Journal of Medicine, 2025;138(9):1264–1277, doi:10.1016/j.amjmed.2025.04.034
2. Letter on the 2025 meta-analysis, The American Journal of Medicine, 2025, https://www.amjmed.com/article/S0002-9343(25)00464-4/fulltext
3. Ravindran R, et al., "Collagen Supplementation for Skin and Musculoskeletal Health: An Umbrella Review of Meta-Analyses", Aesthetic Surgery Journal Open Forum, 2026;8:ojag018, https://academic.oup.com/asjopenforum/article/doi/10.1093/asjof/ojag018/8446510
4. Proksch E, et al., Skin Pharmacology and Physiology, 2014;27(1):47–55, https://pubmed.ncbi.nlm.nih.gov/23949208/
5. Proksch E, et al., Skin Pharmacology and Physiology, 2014;27(3):113–119, https://pubmed.ncbi.nlm.nih.gov/24401291/
6. Proksch E, Zdzieblik D, Oesser S, Cosmetics, 2025;12(2):79, doi:10.3390/cosmetics12020079
7. Vital Proteins, Collagen Peptides product page, 2026, https://www.vitalproteins.com/products/vp-collagen-peptides
8. Vital Proteins, Collagen Gummies product page, 2026, https://www.vitalproteins.com/products/collagen-gummies
9. Ancient Nutrition, Multi Collagen Protein product page, 2026, https://ancientnutrition.com/products/collagen-protein
10. Walmart, Nature's Truth Collagen Peptide Gummies listing, 2026, https://www.walmart.com/ip/471550835
11. National Geographic, "Do collagen supplements really work?", https://www.nationalgeographic.com/premium/article/collagen-supplements-joints-wrinkles-skin-health
12. Anglia Ruskin University, "Collagen benefits skin but not performance", 2026, https://www.aru.ac.uk/news/collagen-benefits-skin-but-not-performance
13. CosmeticsDesign, "Industry reacts to meta-analysis concluding collagen supplements show no proven benefit for skin aging", 26 August 2025, https://www.cosmeticsdesign.com/Article/2025/08/26/industry-reacts-to-meta-analysis-concluding-collagen-supplements-show-no-proven-benefit-for-skin-aging
14. Sam's Club, Vital Proteins Collagen Peptides customer ratings, checked September 2026

Every claim above is sourced in the text. Prices are what we paid, on the date shown. We buy what we test; nothing is gifted, and nothing is sponsored.