Sona B Complex - Vitamin B Time Release (30). 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.. Sona B Complex is Time Release – It releases its nutrients over a prolonged period of time thus allowing the body a longer period during which to absorb and utilize these nutrients as recommended by nutritionists. It is also vegetarian suitable.