Alpha Peptide Collagen Liquid from Pharmavital contains high-quality SOLUGEL® collagen hydrolysate with bioactive peptides (source: bovine) as well as vitamin C, selenium, and rosehip extract. Collagen is the most abundant protein in the human body and is a major component of the skin, joints, tendons, ligaments, and muscles. Collagen is also a valuable source of essential and non-essential amino acids. The vitamin C it contains contributes to normal collagen formation for normal bone and cartilage function. Selenium also helps to protect cells from oxidative stress.