Natures Aid Vitamin B Complex 100 Mega Potency provides Vitamin C alongside a 100mg B vitamin complex. B Vitamins contribute to: The reduction of tiredness and fatigue The normal functioning of the nervous system. Normal energy yielding metabolism & Normal psychological function *B vitamins are water soluble and have a natural bright yellow colour. Occasionally this can cause your urine to become naturally bright yellow. , , Directions for Use: Take 1 tablet per day with food. Do not exceed the recommended intake.