Sona Stress B Complex with Vitamin C & E (60). B complex is comprised of 11 B vitamins, namely, Thiamin, Riboflavin, Niacin, Pantothenic Acid, Biotin, Folic Acid, Cyanocobalamin (B12), Choline, Inositol, and Para-aminobenzoic Acid (PABA).. Because the B vitamins work together, a deficiency in one often indicates a deficiency in another.. Benefits Mental performance and Energy metabolism. Helps with Reduction of tiredness and fatigue. High potency Time Release formula