Pepcid vs. Aciphex
See how Pepcid and Aciphex compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Pepcid is an H2 blocker that lowers stomach acid quickly and is available over the counter, while Aciphex is a prescription-only proton pump inhibitor that suppresses acid more completely.
Aciphex generally requires only once-daily dosing for most uses, while Pepcid is often dosed twice a day for active ulcers, GERD, and esophagitis.
Both drugs treat ulcers and GERD, but Aciphex is also FDA-approved for H. pylori eradication and Zollinger-Ellison syndrome at higher doses.
Pepcid vs. Aciphex Drug Summary
Pepcid
Pepcid (famotidine) is an H2 receptor blocker that reduces stomach acid to treat active ulcers, GERD, and erosive esophagitis. It is taken as a tablet, once or twice daily depending on the condition, and lower-dose versions are also sold over the counter for occasional heartburn.
Aciphex
Aciphex (rabeprazole) is a proton pump inhibitor that blocks acid production at the source to heal erosive GERD, duodenal ulcers, and hypersecretory conditions like Zollinger-Ellison syndrome. It is taken as a delayed-release tablet, usually once daily, with higher or split doses used for severe acid conditions.
Pepcid vs. Aciphex Side Effects
Pepcid
Aciphex
Pepcid vs. Aciphex Dosage
Pepcid
Aciphex
| STAGE | DOSE | WHEN |
| Starting dose | 40 mg once daily | At the start |
| Maximum dose | 20 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 60 mg twice daily | If needed |
| Dose changes | 3 increases | As tolerated |
Pepcid
| STAGE | DOSE | WHEN |
| Starting dose | 40 mg once daily | At the start |
| Maximum dose | 20 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
Aciphex
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 60 mg twice daily | If needed |
| Dose changes | 3 increases | As tolerated |
Pepcid vs. Aciphex Indications
Pepcid
Pepcid is FDA-approved for active duodenal and gastric ulcers, symptomatic non-erosive GERD, and erosive esophagitis confirmed by biopsy. It is also used to reduce the risk of duodenal ulcer recurrence and for pathological hypersecretory conditions like Zollinger-Ellison syndrome.
Active duodenal ulcer
Active gastric ulcer
Symptomatic non-erosive GERD
Erosive esophagitis due to GERD
Pathological hypersecretory conditions
Aciphex
Aciphex is FDA-approved for healing erosive or ulcerative GERD, maintaining that healing, and treating symptomatic GERD in adults and adolescents 12 and older. It is also used for duodenal ulcer healing, H. pylori eradication with antibiotics, and hypersecretory conditions like Zollinger-Ellison syndrome.
Healing of erosive or ulcerative GERD
Maintenance of GERD healing
Symptomatic GERD in adults and teens 12+
Duodenal ulcer healing
H. pylori eradication with antibiotics
Pepcid vs. Aciphex Pros and Cons
Pepcid
Pepcid works quickly and has a long safety record since its 1986 approval, with a lower-dose version available without a prescription. As an H2 blocker it suppresses acid less completely than a PPI, which can matter for severe erosive disease.
Pros
Available over the counter at lower doses
Can be used as needed for quick symptom relief
Lower risk of long-term bone fracture linked to PPIs
Roughly $10 to $100 per month without insurance
Cons
Often dosed twice daily for active disease
Less potent acid suppression than a PPI
Not indicated for H. pylori eradication
Effectiveness can lessen with continuous long-term use
Aciphex
Aciphex offers stronger, more sustained acid suppression and simpler once-daily dosing for most uses, plus a specific dose path for Zollinger-Ellison syndrome up to 100 mg a day. As a PPI it carries its own long-term risks and a much higher price tag.
Pros
Once-daily dosing for most approved uses
Stronger acid suppression for healing erosive GERD
Approved combination therapy for H. pylori
Specifically labeled for Zollinger-Ellison syndrome
Cons
Roughly $658 to $1,536 per month without insurance
Not approved for GERD treatment under age 12
Long-term or high-dose use raises bone fracture risk
Carries PPI risks like C. difficile diarrhea and kidney inflammation
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