Nexium vs. Famotidine
See how Nexium and Famotidine compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Nexium is a proton pump inhibitor that blocks acid production more completely than famotidine, an H2 blocker.
Famotidine works faster for occasional heartburn, while Nexium is better suited for healing erosive esophagitis and long-term acid control.
Both drugs come in prescription and over-the-counter strengths, but they differ in potency, onset, and long-term risk profile.
Nexium vs. Famotidine Drug Summary
Nexium
Nexium (esomeprazole) is a proton pump inhibitor that reduces stomach acid production by blocking the enzyme that makes it. It treats erosive esophagitis, GERD-related heartburn, and stomach ulcers, and is taken as a once-daily capsule before eating.
Famotidine
Famotidine is an H2 blocker that reduces acid production by blocking histamine signals in the stomach. It treats GERD, duodenal and gastric ulcers, and heartburn, and is taken as a tablet once or twice daily.
Nexium vs. Famotidine Side Effects
Nexium
Famotidine
Nexium vs. Famotidine Dosage
Nexium
Famotidine
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | Weeks 1-4 |
| Maximum dose | 20-40 mg IV once daily | If needed |
| Dose changes | 3 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 20 mg every 6 hours | If needed |
| Dose changes | 3 increases | As tolerated |
Nexium
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | Weeks 1-4 |
| Maximum dose | 20-40 mg IV once daily | If needed |
| Dose changes | 3 increases | As tolerated |
Famotidine
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 20 mg every 6 hours | If needed |
| Dose changes | 3 increases | As tolerated |
Nexium vs. Famotidine Indications
Nexium
Nexium is FDA-approved to heal and maintain healing of erosive esophagitis, treat short-term GERD symptoms, and reduce the risk of NSAID-related stomach ulcers. It is also used with antibiotics to eradicate H. pylori and to manage rare acid-overproduction disorders like Zollinger-Ellison syndrome.
Healing of erosive esophagitis
Maintenance of erosive esophagitis healing
Short-term treatment of GERD and heartburn
Risk reduction of NSAID-associated ulcers
H. pylori eradication (with antibiotics)
Famotidine
Famotidine is FDA-approved to treat duodenal and gastric ulcers, GERD, and erosive esophagitis, and to manage rare acid-overproduction disorders. It is also used off-label for stress ulcer prevention in critically ill patients and for chronic urticaria.
Treatment of duodenal ulcer
Maintenance therapy for duodenal ulcer
Treatment of gastric ulcer and GERD
Treatment of erosive esophagitis due to GERD
Off-label: stress ulcer prophylaxis and chronic urticaria
Nexium vs. Famotidine Pros and Cons
Nexium
Nexium provides stronger, more sustained acid suppression than famotidine, making it the preferred option for healing erosive esophagitis and long-term GERD control. It usually requires only once-daily dosing, but extended use carries risks like bone fracture and low magnesium that famotidine does not share.
Pros
More potent, longer-lasting acid suppression
FDA-approved for healing erosive esophagitis
Available as an IV option for hospitalized patients
Used with antibiotics for H. pylori eradication
Cons
Slower symptom relief (hours, not minutes)
Long-term use linked to bone fracture risk
Higher list price, roughly $160 to $280 a month before savings programs
Not approved for GERD symptoms alone in infants under 1 year
Famotidine
Famotidine works within about an hour, making it useful for quick symptom relief, but it generally produces less complete acid suppression than Nexium for severe esophagitis. It has a long safety record with no boxed warning, though people with kidney problems need lower doses.
Pros
Faster onset of action, often within an hour
Lower list price, roughly $10 to $90 a month before savings programs
No boxed warning, unlike some other acid-reducing classes
Long track record dating back to its 1986 approval
Cons
Less complete acid suppression than a PPI
Requires dose adjustment in kidney impairment
Risk of confusion or hallucinations in elderly or renal patients
Shorter duration often means more frequent dosing
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