Doctor's Best Collagen Types 1 and 3 contains hydrolyzed collagen protein (BSE-Free), which contributes to the growth and maintenance of healthy tissues. Collagen is the structural protein essential for the strength of bones and flexibility of joints, tendons, ligaments, hair, skin, nails, and other tissues throughout the body.Vitamin C is added to the formula as an important nutrient required for collagen synthesis by the body.

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