Viridian's best selling B-complex with vitamin C. Each of the Viridian B-complex supplements offers a full array of the B vitamins together with a higher level of a featured B vitamin. This supplement features a higher level of pantothenic acid (vitamin B5) to aid in the reduction of tiredness. B complex vitamins (B1, B2, B3, B5, B6 & B12) contribute to the reduction of tiredness and fatigue, to normal psychological function and mental performance, energy-yielding metabolism, the regulation of hormonal activity, the functioning of the immune, cardio and nervous systems and the maintenance of normal skin, mucous membranes, vision and red blood cells. B complex vitamins also contribute to the protection of cells from oxidative stress. This 'oxidative stress' appears to be a major factor in many human diseases.