Dietary Supplement Two-Stage Timed-Release Fast-Acting First Stage Timed-Release Second Stage This product is formulated using a two-stage, times release technology. The formula is designed to release half of the Vitamin C in this product rapidly and other half gradually over a period of up to 12 hours**. Once capsule in the morning and another 12 hours later extends the availability of Vitamin C to the body over a 24-hour period. Vitamin C provides antioxidant activity and is intended to provide nutritive support for normal, healthy collagen synthesis, cartilage and bone development, immune function, capillary and blood vessel integrity and nerve impulse transmission. This product also contains Calcium Carbonate and Magnesium Oxide to buffer the natural acidity of Vitamin C.