Alka-Seltzer® Original * * Fizzy, classic relief * Get fast relief of heartburn, upset stomach, acid indigestion with headache and body aches from this effervescent antacid and pain reliever that has been around for more than 80 years. Unlike other antacids, such as Tums or Mylanta, H-2 blockers such as Pepcid, and PPIs like Prilosec and Nexium, Alka-Seltzer® Original contains an analgesic for pain accompanied by heartburn and acid indigestion. Fast relief of heartburn, upset stomach, acid indigestion with headache and body achesAlso relieves painActive Ingredients: Anhydrous citric acid 1000mg, Asprin 325mg, Sodium bicarbonate (heat treated) 1916mgEach tablet contains sodium 567 mg