This is a high strength supplement of vitamin B2 which is also known as riboflavin and each capsule provides a full 50mg of riboflavin. As with all lamberts® supplements this product is manufactured in premises that operate to stringent pharmaceutical standards of gmp. Riboflavin is a very important nutrient as it contributes to: the normal functioning of the nervous system. The maintenance of normal red blood cells. The maintenance of normal skin. The maintenance of normal vision. The reduction of tiredness and fatigue.