Bio-Health Sea Kelp is a natural source of vitamins & minerals. In this product Bio-Health have fortified super quality powdered Sea Kelp with extra B vitamins (Thiamin, Riboflavin, Niacin & B6, Biotin, Pantothenic acid, Vitamin C (60mg), Vitamin D (5ug) & natural Vitamin E (10mg), all at 100% RDA resulting in a substantial natural multinutrient complex to contribute towards general good health. Extra Kelp contains nutrients important to the proper function of the thyroid gland which is involved with cell growth & repair.