The isolated vitamin C found in ordinary supplements is rapidly lost from the body, but university studies have shown that True Food C sustains vitamin C in the blood for well over 8 hours, and has much greater antioxidant power than regular vitamin C. As a guide, take 1 tablet of True Food C in place of 1000mg standard isolated vitamin C. One tablet provides: 250mg bio-transformed vitamin C*, 100mg Citrus Bioflavonoids plus other phyto-nutrients including Beta Glucans, naturally found in the rich food base of a Saccharomyces cerevisiae culture. *bio-transformed nutrients. Suggested intake: 1-3 tablets a day.