Lamberts® vitamin B-100 complex is a high strength product that is useful in situations where someone requires a fast boost to their intake of b vitamins. In most situations this product should be used for short term supplementation typically two months after which time our b-50 complex will provide adequate levels of the b vitamins. Several of the b vitamins are known to contribute to the normal functioning of the immune system and to normal psychological function. Others are recognised as contributing to the reduction of tiredness and fatigue as well as the maintenance of normal skin. Made in the uk and produced in premises that operate to stringent gmp pharmaceutical standards. Extra high strength b vitamin complex. One-a-day short term use.