100% Whole Food Complex Vitamin cInwhole foods, vitamin C is part of a total complex that includes ascorbic acid, bio-flavonoids and co-factors known to aid its absorption inthe body. Food-source vitamin C is also naturally buffered, so it's less acidic and gentler on the stomach. Alive 100% Whole Food Complex is comlete vitamin C just as Mother Nature grows it. Naturally Sourced from Organic FruitsUnlike other supplements that use isolated ascorbic acid or cultured bacteria as their source of vitamin C, Alive! 100% Whole Food Complex derives its entire vitamin C content from four of Mother Nature's most potent organic fruit sources.