Dietary Supplement. Antioxidant Protection*. Ascorbic Acid. 100% Pure Powder. Pharmaceutical Grade. Vegetarian/Vegan Product Ascorbic Acid is another name for Vitamin C. Vitamin C is a popular antioxidant and one of the most widely used vitamins in the world. Fine Ascorbic Acid is a bioavailable form of Vitamin C in a powder form, so it can be combined with other powdered supplements or dissolved in liquid for easy ingestion. Fine Ascorbic Acid dissolves more readily in liquids than regular crystalline ascorbic acid. This product is Pharmaceutical Grade . Contains no sugar, salt, starch, yeast, wheat, gluten,.