Eno Antacid Effervescing Power. For upset stomach discomfort after meals, acid indigestion and heartburn.ENO provides fast relief of acid indigestion after meals whenever you need it. Combat the symptoms of heartburn and indigestion, with ENO Antacid Effervescing Powder — the fizz that fights fast. ENO Antacid Effervescing Powder works by neutralizing excess acid in your stomach and helping to manage the burning pain and discomfort that acid indigestion can cause. ENO antacid goes to work fast, providing soothing relief from an upset stomach, discomfort after meals, acid indigestion, heartburn, and stomach upset due to excess stomach acid. Gentle on the stomach, ENO powder acid dissolves quickly to create an effervescent solution that neutralizes stomach acid on contact. Easy to use, simply dissolve one teaspoon of powder (~5ml) in a glass of water (~ 180ml), and drink — then get on with your day. For persons on restricted sodium consumption, this product contains 855mg sodium per dose (5g). Do not take with tetracycline products. Do not take this medicine for more than 14 days. Do not use if you have high blood pressure, heart, kidney, or liver disease, or if pregnant or breast feeding. ENO powder is indicated for adults and children who are at least 12 years old.