Lansoprazole Side Effects

Like all medications, Lansoprazole can cause side effects. Most people do not experience serious adverse effects, but it is important to know what to look for and when to seek medical care.

Common Side Effects

→Headache
→Diarrhoea or constipation
→Nausea and abdominal pain
→Flatulence

Serious Side Effects

→Hypomagnesaemia with long-term use
→C. difficile infection (increased risk)
→Bone fracture risk with prolonged high-dose use
→Acute interstitial nephritis (rare)
→Hyponatraemia

When to Seek Medical Care

→Muscle cramps, tremors, or seizures (low magnesium)
→Severe diarrhoea
→Blood in stool
→Significant unintended weight loss

Safety Note

If you experience any unexpected or concerning symptoms while taking Lansoprazole, contact your doctor or pharmacist. Do not stop taking Lansoprazole without medical advice unless you experience a serious adverse reaction.

Frequently Asked Questions

Are side effects from Lansoprazole common?

Most patients tolerate Lansoprazole well at therapeutic doses. Common side effects are usually mild and often improve after the first few weeks. Serious side effects are less common but should be reported immediately.

What should I do if I experience side effects from Lansoprazole?

Mild side effects: discuss with your pharmacist, as many resolve spontaneously. Serious side effects: seek medical care immediately and contact your prescriber. Do not stop Lansoprazole abruptly for long-term conditions without medical advice.

More About Lansoprazole

Dosage & Administration

Drug Interactions

Warnings & Precautions

← Back to Lansoprazole Overview

Have Questions About Lansoprazole?

Describe your symptoms and concerns and get a structured clinical assessment — possible causes, red flags, and recommended next steps.

Start Free AI Analysis →

Medical Disclaimer: This drug reference is provided for informational purposes only and is not a substitute for professional medical advice. Always consult your physician or pharmacist before changing your medication. Information reviewed by the vHospital Editorial Team · Sources: WHO, BNF, FDA prescribing information.