Redoxon® Vitamin C-Orange effervescent tablets help prevent cold, helps the body to metabolize proteins and fats, and is a factor in the maintenance of good health. Recommended Dosage: (Adults and adolescents): 1 tablet daily, or as directed by the physician.  Dissolve effervescent tablet in 1/2 glass of cold water.Caution: Phenylketonurics: contains phenylalanine/aspartame. To be sure this product is right for you, always read and follow the label.