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Collagen is a structural protein found in skin, bones and connective tissue. Supplements are usually hydrolysed collagen peptides from marine or bovine sources, or vegetarian formulas that supply building blocks such as amino acids and vitamin C. Check the source, the grams per serving and any added vitamin C on the label.
See also collagen protein and bone and joint support.
Collagen: questions
What is the difference between marine and vegetarian collagen?
Marine collagen comes from fish. Vegetarian products contain no collagen; they supply amino acids and vitamins instead.
How is collagen usually taken?
Mixed into water or a drink, once a day. Follow the serving size on the label.

