Dietary Supplement Time Release Support for Energy & Normal Nerve Function Purity & Potency Guaranteed Complete B Time Release tablets are designed to gradually release their contents over an 8-hour period for maximum bioavailability. The B vitamins work together to metabolize proteins, carbohydrates and fats, and provide the body with energy. They also support a healthy nervous system and mood, and are essential for healthy skin, hair and vision. Water-soluble B vitamins are not stored in the body and must be replenished daily All Natural Factor products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.