Does Famotidine Work Better than Omeprazole?
Medically reviewed by Andre Stone | MD, University of Pittsburgh School of Medicine on August 25th, 2026.
Omeprazole generally provides stronger, longer-lasting acid suppression than famotidine and may be more effective for conditions such as frequent GERD or erosive esophagitis. The better choice depends on the condition and the person's needs. Omeprazole is a proton pump inhibitor (PPI) that generally suppresses stomach acid more strongly and for longer than famotidine, an H2 blocker. PPIs such as omeprazole generally heal acid-related ulcers and erosive esophagitis more effectively than H2 blockers. Symptom relief varies, and peptic ulcers may also require treatment of an underlying cause, such as H. pylori infection or NSAID use. However, famotidine works faster, providing relief within 1-2 hours compared to omeprazole's 1-3 days for full effect. Famotidine and omeprazole have different side-effect and drug-interaction profiles. A clinician or pharmacist can review which option is safer with a person's health conditions and other medicines. Your doctor can determine which medication better suits your specific condition, symptom severity, and medical history.
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