Quest Mega B Complex 1000mg Vit C contains an energy formula with nutrients that are released over 6 hours to help reduce tiredness and fatigue Quest Mega B has a full spectrum of the B vitamins plus vitamin C. It is designed to support a hectic lifestyl by supporting energy and concentration levels and reduce tiredness and fatigue and the effects of stress on the body. Vitamins B1, B2, niacin (B3), B6, pantothenic acid and vitamin C contribute to the reduction of tiredness and fatigue. Vitamins B1, niacin (B3), B6, B12, biotin and vitamin C contribute to normal functioning of the nervous system and normal psychological function. Vitamin C is an antioxidant nutrient that contributes to the protection of cells from oxidative stress and to the normal functioning of the immune system. As a water soluble nutrient vitamin C supplies in the body are used up quicker under stress leading to a lowering of immune function and increased incidence of infections. Quest Mega B complex is suitable for: Dairy Free Gluten Free Nut Free Vegans Vegetarians