Holland & Barrett Mega B-100 vitamins support normal energy yielding metabolism (Vitamins B1, B2, B3, Pantothenic acid, B6 and B12) and the reduction of tiredness and fatigue (Vitamins B2, B3, Pantothenic acid, B6, B12). High Strength Mega B-100 is an excellent source of B vitamins including Thiamin (B1), Riboflavin (B2), Niacin (B3), vitamin B6 and vitamin B12, which also contribute to the normal functioning of the nervous system. These caplets are suitable for vegans and vegetarians.