Vital Proteins Marine Collagen Peptides
by Vital Proteins · The marine option
12 g type I collagen from wild-caught white fish. The pescatarian option, mercury-tested, single ingredient.
Type I collagen from wild-caught white fish, mercury-tested, for readers avoiding bovine sources. The 'marine is better for skin' pitch is mechanism marketing, no outcome trial shows it beating bovine, but type I is the skin-dominant collagen and the product is clean. Choose it for dietary reasons, not for a hoped-for skin edge.
Hydrolyzed collagen is the rare supplement-aisle product with randomized human trials behind specific claims: a 2021 meta-analysis of 19 RCTs found improved skin hydration and elasticity after roughly 90 days, and a 24-week randomized trial reported less activity-related joint pain at 10 g per day. The effects are modest, many trials are industry-funded, and the hair, gut and weight claims on most tubs outrun the data. We grade the full evidence file in our collagen peptides review; the short version is that skin and active-joint endpoints are earned, the rest is marketing.
The published trials used 2.5 to 10 g daily for skin endpoints, 10 g for joint comfort, and 15 g in the muscle protocols paired with resistance training, taken for 8 to 24 weeks; nothing in the literature supports week-one effects. Timing is unstudied except for one pre-exercise protocol, so consistency beats clock-watching, and hot coffee does not degrade the peptides. Vitamin C is a genuine cofactor in collagen synthesis, so taking your scoop with a meal that includes some costs nothing. This is reported from the trials, not a prescription.
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