There s a reason why Vitamin C is the most well-known and highly regarded vitamin in the world: its antioxidant powers run broad and deep, impacting many of the body s internal systems extensively; including the immune system. Nature s Plus 100% pure Vitamin C Micro-Crystals are perfect to add to juice or sprinkle on food. Derived from natural sources, each heaping teaspoon contains approximately 5,000 mg (5g) of Vitamin C.