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.