Nexium (Esomeprazole) Is A Medication Primarily Used To Treat Conditions Related To Excessive Stomach Acid, Such As Gastroesophageal Reflux Disease (Gerd), Peptic Ulcers, And Zollinger-Ellison Syndrome. It Is A Proton Pump Inhibitor (Ppi) That Works By Reducing The Amount Of Acid Produced In The Stomach, Helping To Relieve Symptoms Of Heartburn And Acid Reflux. Active Ingredients: Esomeprazole: A Proton Pump Inhibitor That Decreases Stomach Acid Production. Side Effects: Common Side Effects May Include Headache, Diarrhea, Abdominal Pain, Nausea, And Flatulence. Serious Side Effects, Though Rare, May Include Kidney Problems, Severe Allergic Reactions, Or Bone Fractures If Used Long-Term. Precautions: Should Be Used With Caution In Patients With Liver Problems. Long-Term Use May Increase The Risk Of Fractures, Kidney Disease, And Low Magnesium Levels. Not Recommended For Use During Pregnancy Unless Prescribed By A Doctor.