Doctor\'s Best Collagen Types 1 & 3 with Peptan, Non-GMO, Gluten Free, Soy Free, Supports Hair, Skin, Nails, Tendons & Bones, 1000 mg, 180 Tablets

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, te...