Best Collagen Supplements 2025

Collagen is the most abundant protein in the body — making up skin, joints, tendons, and connective tissue. After 25, production declines. For people losing weight rapidly on GLP-1 medications, supporting skin elasticity through collagen supplementation has become a major topic — specifically in the context of "Ozempic face."

The brand that popularized collagen powders and still the benchmark. Vital Proteins unflavored collagen peptides dissolve completely in hot or cold liquids without any taste or texture change — add it to your morning coffee and you won't notice it. 20g of collagen per serving (also counts toward daily protein). Grass-fed bovine, Type I and III. Used daily by a huge percentage of GLP-1 patients to combat skin laxity during rapid weight loss.

Half the price of Vital Proteins with a solid 11g per serving. Non-GMO certified, grass-fed, and third-party tested. Sports Research has built a strong reputation for quality at an accessible price point. If you're using collagen daily long-term, the cost difference adds up to hundreds of dollars a year — SR is worth considering.

Covers 5 types of collagen from 4 different sources (bovine, chicken, fish, eggshell membrane). Type II collagen from chicken specifically supports joint cartilage — important if you're exercising more to preserve muscle on GLP-1. The multi-collagen approach gives broader tissue coverage than single-source products. Unflavored mixes cleanly.

Marine collagen has smaller peptide size than bovine, which some research suggests absorbs faster. It's Type I only — the collagen type most associated with skin elasticity and anti-aging effects. Best choice if skin health is your primary goal. Wild-caught fish source. Note: has a very mild seafood smell in the bag but no taste in liquid.

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