Vitamin C Crystals Vitamin C is an essential antioxidant nutrient needed for the building of collagen, maintaining teeth and gum tissue health and the normal functioning of the body"s natural defenses. Pure Vitamin C is the only ingredient. Each level teaspoonful contains approximately 4000 mg (4 grams) of Vitamin C (Ascorbic Acid). Tart taste. Supplement Facts Serving Size 1 Teaspoonful Amount Per 1 Teaspoonful % DV Vitamin C (as ascorbic acid) 4000 mg 6667% * Daily Value (DV) not established