What it is used for
- Heartburn and acid reflux (GERD)
- Stomach and duodenal ulcers
- Helicobacter pylori infection (combination therapy)
- Healing erosive esophagitis
- Zollinger-Ellison syndrome
- NSAID-related ulcer prevention
How it works
Lansoprazole turns off the acid pumps in the stomach lining, reducing acid production so symptoms settle and ulcers or inflamed tissue can heal.
How it is taken
Available as capsules and orodispersible (melt-in-mouth) tablets. It is usually taken by mouth before food; capsules are normally swallowed whole. Take it exactly as your doctor, pharmacist, or the label directs.
No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.
Common side effects
- Headache
- Diarrhea
- Nausea
- Stomach pain
- Constipation
- Dizziness
Serious effects — get help
- Severe allergic reaction
- Severe or bloody diarrhea (possible intestinal infection)
- Low magnesium symptoms
- Severe skin rash with blistering or peeling
- Signs of kidney inflammation
If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.
Interactions to watch
- Drugs requiring stomach acid for absorption
- Methotrexate
- Warfarin
- Clopidogrel
- Some HIV medicines
Who should take care
- Tell your clinician about liver disease
- Discuss pregnancy or breastfeeding before use
- Long-term use may affect bones, magnesium, and vitamin B12
- Have alarm symptoms assessed before starting
- Share your full medicine list with your pharmacist