Vitamin World's Hydrolyzed Collagen 4000mg contains both Type I and Type III Collagen. These Hydrolyzed Collagen caplets also contain the important nutrients Vitamin C and Biotin. Collagen is the most abundant amino acid in the body, responsible for the health of the connective tissue that makes up tendons, ligaments, skin, muscles, and more.      Collagen's type 1 and 3 that directly support skin, muscle, and bone. Biotin that can help the health of the hair, skin, and nails, as well as rate of hair growth. Vitamin C to support the formation of the collagen found in tissue. 4 per day formula. 180 easy to swallow coated caplets. 45 day supply. Made in the USA with Domestic and Imported Ingredients Gluten Free, Non-GMO, Artificial Color Free, Yeast Free, Lactose Free, Artificial Sweetener Free, Preservative Free, Peanut Free, Tree Nut Free, Dairy Free, Soy Free