Quest Mega B Complex is a high potency formula that willl release its vitamins within 30 minutes. Provides B complex vitamins and vitamin C which are both involved in the release of energy from food and are required for a healthy nervous system. This is an ideal supplement to provide support for those looking to maintain concentration, vitality and general well-being. Ingredients: One tablet provides: Vitamin C 1000mg, Thiamin (B1) 39mg, Riboflavin (B2) 50mg, Niacin (B3) 50mg, Vitamin B6 41mg, Folic Acid 400mcg, Vitamin B12 50mcg, Biotin 50mcg, Pantothenic Acid 50mg, Choline Bitartrate 50mg, Inositol 50mg, PABA 50mg. Additional Ingredients: Microcystalline cellulose, magnesium stearate, hydropropylmethylcellulose, silicon dioxide, peppermint oil.