Science-Based Nutrition Dietary Supplement Vegan Non-GMO / Gluten Free / Soy Free Doctor's Best Sustained Release Vitamin C with PureWay-C supplies a unique form of the essential nutrient vitamin C that contains vitamin C lipid metabolites. PureWay-C has been studied in comparison to several other well-known forms of vitamin C. PureWay-C has superior uptake, bioavailability and retention in cells, as well as more potent free radical scavenging capabilities than other forms of vitamin C. This increased bioavailability means PureWay-C has the potential to more potently support healthy neuron function and enhanced immune system activity as compared to other forms of vitamin C. Potent antioxidant and free radical scavenger activity Helps support the immune system Superior uptake, bioavailability and cell retention form of Vitamin C