Gaviscon Double Action Tablets Are Chewable Tablets Formulated To Provide Relief From Heartburn And Indigestion. They Work By Forming A Protective Layer On Top Of The Stomach Contents, Preventing Acid Reflux While Also Neutralizing Excess Stomach Acid. Active Ingredients: Sodium Alginate Sodium Bicarbonate Calcium Carbonate Side Effects: Common Side Effects Include Nausea, Flatulence, Or Mild Abdominal Discomfort. Rarely, Allergic Reactions Such As Rash, Itching, Or Swelling May Occur. Precautions: Consult A Doctor If You Have Kidney Disease Or Are On A Low-Sodium Diet, As The Product Contains Sodium And Calcium. Avoid Use In Individuals Allergic To Any Of The Ingredients. Pregnant Or Breastfeeding Women Should Seek Medical Advice Before Use.