Common Side Effects of Nexium
Nexium (esomeprazole), a proton pump inhibitor for acid reflux and ulcers, most often causes headache, nausea, diarrhea, flatulence, abdominal pain, and constipation. These affect 1-5% of users and usually resolve after stopping the drug.[1][2]
Serious Side Effects and Risks
Rare but severe reactions include severe allergic responses (rash, itching, swelling, trouble breathing), kidney problems (painful urination, blood in urine), low magnesium (dizziness, fast heartbeat, muscle spasms), bone fractures (hip, wrist, spine with long-term use), Clostridium difficile diarrhea, and lupus-like symptoms (joint pain, skin rash). Long-term use (over a year) raises risks of vitamin B12 deficiency, stomach growths, and pneumonia.[1][2][3]
What Happens with Overdose or Long-Term Use?
Overdose symptoms include confusion, drowsiness, dry mouth, and blurred vision—seek immediate medical help. Prolonged use beyond 8 weeks without doctor supervision increases fracture and infection risks; doctors monitor via blood tests for deficiencies.[2][3]
Side Effects in Special Groups
Pregnant users report no major risks in studies, but data is limited—consult a doctor. Children on Nexium for GERD may experience similar effects as adults, scaled by dose. Elderly patients face higher fracture and kidney risks due to slower drug clearance.[1][3]
Interactions Causing Side Effects
Nexium amplifies effects of warfarin (bleeding risk), clopidogrel (reduced efficacy), and diazepam (sedation). It lowers absorption of ketoconazole, iron, and digoxin. Avoid with rilpivirine (HIV drug).[2]
Sources
[1] FDA Nexium Label
[2] Drugs.com Nexium Side Effects
[3] Mayo Clinic Esomeprazole