Food supplement based on MSM, amino acids, vitamins and minerals. Presentation: 90 tablets of 1600mg. Net quantity: 144 g. Directions for use: Take 1 tablet daily. Nutravit Complex MSM (Methyl Sulfonyl Methane) provides a source of sulfur, and although there is no RDI (Reference Daily Intake), a sulfur deficiency prevents our bodies from functioning properly. It's found in foods like onions, garlic, legumes, tomatoes, avocados, and other vegetables and protein-containing foods, such as nuts, seeds, milk, and eggs (whites and yolks). It's also found in joints, hair, skin, and nails. The body uses L-lysine (an essential amino acid) to build muscle tissue and collagen, a fundamental component of cartilage, connective tissue, and skin. On the other hand, L-proline (a non-essential amino acid) can be manufactured in the body and is involved in collagen production. Vitamin C contributes to normal collagen formation for the normal function of bones, cartilage, and skin. Zinc, meanwhile, contributes to the maintenance of normal hair, skin, and nails. Copper contributes to the maintenance of normal connective tissue. Biotin, commonly known as vitamin C, contributes to the maintenance of normal hair.