Key takeaways
- Omeprazole is a proton pump inhibitor (PPI); famotidine is an H2 receptor blocker.
- The right option and duration depend on symptoms, diagnosis, other medicines, warning signs, and prior response.
- Some strengths or products may be available without a prescription, but persistent or concerning symptoms still need professional evaluation.
How they compare
EDITORIAL GUIDETopicOmeprazoleomeprazoleFamotidinefamotidine
Medication familyProton pump inhibitor (PPI)Histamine-2 (H2) receptor blocker
Common discussionAcid reflux and selected acid-related conditionsHeartburn and selected acid-related conditions
Product formDelayed-release oral productsOral tablet or suspension products
AccessSome products are nonprescription; others require a prescriptionSome products are nonprescription; others require a prescription
DecisionRequires an individual clinician reviewRequires an individual clinician review
Primary sources
Labeling can change. Use the current FDA prescribing information and speak with a licensed clinician or pharmacist before making a treatment decision.