Dimefar Vitamin C 500 mg. Pureway-C is a dietary supplement containing vitamin C in the form of Pureway-C, a patented form of vitamin C, easily absorbed. Vitamin C is an antioxidant that helps strengthen the immune system, promote cardiovascular health and support collagen production in the body. This product is used to increase vitamin C intake and improve overall health. ingredients PureWay-CTM (L-ascorbic acid, citrus bioflavonoids, rice bran fatty acids), vegetable capsule (coating agent: hydroxypropylmethylcellulose), bulking agent: maltodextrin, anti-caking agents: magnesium stearate and silicon dioxide.