Rounding out our list at #5 is Ancient Nutrition's Multi-Collagen Protein. While undeniably their best-selling product, the ingredient label raises some concerns…
Instead of sticking to a single collagen source like bovine, this formula contains several different collagen varieties—from cow, multiple fish sources, chicken bone broth, and even eggshell membrane. This translates to 10 different collagen fibers: Types I, II, III, IV, V, VII, VIII, X, XII, & XXII.
Having so many varied collagen fibers can make a supplement less effective, as your body doesn't necessarily utilize or absorb the excess varieties efficiently. Not only that, but several customers have made complaints about the taste and aftertaste. One customer even went so far as to say that it tastes like “ground up fish bones.” Considering this and its over-formulation, Ancient Nutrition dropped to last on our list of 2025’s Best Collagen Supplements for Bone Health.