Doctor's Best - Best Collagen Types 1 and 36,600 mg -7.1 oz. (200 grams) Doctor's Best Collagen Types 1 and 3 is the major structural protein in connective tissue and the most abundant protein in the human body.Doctors Best Collagen Types 1 & 3is responsible for maintaining the strength and flexibility of bones, joints, skin, tendons, ligaments, hair, nails, blood vessels and eyes, among other tissues throughout the body. Doctor's Best Collagen Types 1 & 3 contains pure collagen protein, providing the fundamental building blocks for growth and maintenance of healthy tissues. Taken as a supplement, this product provides the body with the raw material needed to support the strength and integrity of essential structures. Best Collagen Types 1 & 3 is enzymatically hydrolyzed into component amino acids with a low molecular weight for optimal absorption and utilization by the body. Vitamin C is added to the formula, as it is an essential nutrient required for collagen synthesis by the body. Science-based nutrition Dietary supplement Essential structural support for hair, skin, nails tendons, ligaments and bones Doctor's best Collagen Types 1 & 3 Ingredient Profile Collagen is the major structural protein in connective tissue and the most abundant protein in the human body. It is responsible for maintaining the strength and flexibility of bones, joints, skin, tendons, ligaments, hair, nails, blood vessels and eyes, among other tissues throughout the body. Best Collagen Types 1 & 3 contains pure collagen protein, providing the fundamental building blocks for growth and maintenance of healthy tissues. Taken as a supplement, this product provides the body with the raw material needed to support the strength and integrity of essential structures. Best Collagen Types 1 & 3 is enzymatically hydrolyzed into component amino acids with a low molecular weight for optimal absorption and utilization by the body.