Est. 1973 1,000 mg Per Serving Immune System Dietary Supplement Lab Verified Nutrition Timed Release A Brighter Way Since 1973, we've scoured the globe for the highest quality ingredients, connecting you with the most efficacious supplements that help you live brighter and embrace the moments that matter most. Discussion : Vitamin C is a powerful antioxidant and is intended to support a healthy immune system. This two-stage, timed-release formula is designed to release half of the Vitamin C in this product rapidly and the other half throughout the day which may help extend the availability of Vitamin C to the body over a longer period of time. Based on in-vitro dissolution tests designed to simulate the digestive process. Individual results may vary.