These formulas are designed to maximize absorption and utilization of this essential vitamin. Vitamin C in FoodScience Unique-C is in the buffered Ascorbate form which helps to prevent stomach irritation that is common when supplementing with plain ascorbic acid found in many over the counter Vitamin C supplements. These formulas also contain minerals and bioflavonoids that help increase the effectiveness of Vitamin C by 50%.Other products from HerbsPro