esomeprazole vs lansoprazole
PlainMeds reviewed this comparison against our methodology in August 2026. It places FDA and CMS record fields side by side, without recommending either medication.
Side-by-side comparison of esomeprazole and lansoprazole. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Nexium
Prevacid
Esomeprazole (Nexium) is a drug that reduces stomach acid. It belongs to a class of drugs called proton pump inhibitors (PPIs).
Lansoprazole is a medicine that reduces the amount of acid in your stomach. It belongs to a class of drugs called proton pump inhibitors (PPIs).
This medicine treats frequent heartburn. Frequent heartburn means you have heartburn 2 or more days a week. This medicine is not for immediate relief of heartburn. It may take 1 to 4 days to work fully.
Lansoprazole can treat several conditions caused by too much stomach acid. It can heal duodenal and gastric ulcers. It also treats heartburn (GERD) and a damaged esophagus (erosive esophagitis).
Esomeprazole works by reducing the amount of acid your stomach makes. It blocks the proton pump in your stomach lining. This pump is responsible for producing stomach acid.
Lansoprazole works by blocking the enzyme in the stomach that produces acid. This helps to lower the amount of acid made. Lowering acid helps to heal damage and relieve symptoms.
- • Nausea
- • Diarrhea
- • Headache
- • Diarrhea
- • Abdominal pain
- • Nausea
- • Constipation
- Chronic Kidney Disease 5,020
- Acute Kidney Injury 4,563
- Nausea 4,004
- Diarrhoea 3,869
- Fatigue 3,528
- Chronic Kidney Disease 32,775
- Acute Kidney Injury 18,670
- Renal Failure 13,811
- End Stage Renal Disease 9,782
- Renal Injury 9,520
Do not take this medicine for more than 14 days, or more often than every 4 months, unless your doctor tells you to.
Lansoprazole may hide the symptoms of stomach cancer. If you have a poor response or early return of symptoms, your doctor may do more tests. Long-term use of PPIs like lansoprazole may increase your risk of bone fractures. It may also cause low magnesium levels or Vitamin B-12 deficiency.
Tell your doctor if you are pregnant or plan to become pregnant. Also, tell your doctor if you are breastfeeding or plan to breastfeed.
Talk to your doctor if you are pregnant or plan to become pregnant. Lansoprazole may affect bone development in the fetus. If you take lansoprazole with clarithromycin, also consider clarithromycin's pregnancy risks.
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How to Read This esomeprazole vs lansoprazole Comparison
esomeprazole is classified in the Proton Pump Inhibitor (PPI) drug class, while lansoprazole sits within the Proton Pump Inhibitor (PPI) class. Because both drugs share the same classification, they are often considered interchangeable in theory, but clinical outcomes rarely track that cleanly. Both drugs are available over the counter.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, esomeprazole has 20,984 submissions while lansoprazole has 84,558. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for esomeprazole or lansoprazole.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.