D-Ribose plays a role in supporting heart and skeletal muscle energy metabolism10This hypoallergenic* convenient powder contains D-ribose and no other ingredients10D-Ribose powder has a natural, slightly sweet taste and mixes readily in water or juice10Free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, and yeast. Contains no artificial colors, flavors, or preservatives10Trusted by healthcare practitioners since 1969, Klaire Labs products are developed closely with physicians and are intended to be used as directed by a healthcare practitioner1010