Cran Berry? is a tablet based on a special cranberry extract with a concentrated and standardized content of Proanthocyanidin (PAC) in combination with lingonberries, black pepper and vitamins. A Cran Berry? tablet provides 36 mg of Pro-Antho-Cyanidines equivalent to a quarter to half a liter of cranberry juice. Vitamin C and B6 contribute to the normal functioning of the immune system and niacin to maintain normal mucous membranes.