In todays hectic lifestyle, our bodies are constantly depleting the nutrients we rely on to help us perform at our pinnacle. Perfect for the active professional, athlete or individual with sensitive systems, NOW Vitamin C 1000 mg Sustained Release delivers gradual amounts of this powerful antioxidant rendering consistent cell protection and free radical fighting throughout our busy days.*

From the FDA's website "Some scientific evidence suggests that consumption of antioxidant vitamins may reduce the risk of certain forms of cancer. However, FDA has determined that this evidence is limited and not conclusive."