Alka-Seltzer Lemon Lime Effervescent Tablets

In Each Tablet: Other Information: Each tablet contains: sodium 489 mg. Phenylketonurics: contains phenylalanine 4.5 mg per tablet. Store at room temperature. Avoid excessive heat. Alka-Seltzer Lemon Lime in water contains the antacid sodium citrate as the principal active ingredient.