Natural Source of Vitamin C A Dietary Supplement Vegetarian Formula NOW Acerola Powder is derived from acerola cherries, one of nature's highest sources of vitamin C. The fruit can yield up to 4,000 mg of Vitamin C per 100 grams of fresh weight, but on the average yields around 1,500 mg. Our Acerola Powder is a 4:1 extract that yields 180 mg of Vitamin C per teaspoon and tastes great! Some scientific evidence suggests that consumption of antioxidant vitamins may reduce the risk of certain forms of cancer. However, the FDA has determined that this evidence is limited and not conclusive. The Acerola cherry is one of the highest natural sources of Vitamin C available.