In Each Drop Other Information: Phenlyketonurics, contains phenylalanine 1 mg per drop. Excessive use may have a laxative effect. Protect from heat and moisture. Product may be useful for diabetics on the advice of a doctor Exchange Information: 2 Drops = Free exchange; 7 Drops = 1 Fruit. Dietary exchanges based on Exchange Lists for Diabetes. 2008 American Diabetes Association, American Dietetic Association.