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What is Collagen Protein?. Collagen is the main structural protein in the body and a vital building block for nutrition. There are at least 16 types of collagen but roughly 80-90% of the Collagen in the body consists of type 1, 2 and 3.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.