amoxicillin vs rabeprazole
Side-by-side comparison of amoxicillin and rabeprazole. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
major Known Drug Interaction
Combination Therapy with Clarithromycin and Amoxicillin Clinical Impact: Concomitant administration of clarithromycin with other drugs can lead to serious adverse reactions, including potentially fatal arrhythmias, and are contraindicated. Amoxicillin also has drug interactions. See Drug Interactions in prescribing information for amoxicillin.
Recommendation: Consult your healthcare provider to ensure these medications are taken correctly for your specific treatment plan.
Amoxil
Aciphex
Amoxicillin and Clavulanate Potassium is a combination medicine used to fight bacterial infections. It contains amoxicillin, an antibiotic, and clavulanate, which helps the amoxicillin work better.
Rabeprazole (Aciphex) is a medicine that reduces the amount of acid your stomach makes. It belongs to a class of drugs called proton pump inhibitors (PPIs).
This medicine treats infections like lower respiratory infections, ear infections (otitis media), sinus infections, skin infections, and urinary tract infections. It works against specific bacteria that cause these infections. However, it should only be used when tests show the bacteria are susceptible to it, to avoid antibiotic resistance.
This medicine can treat several conditions caused by too much stomach acid. It can heal damage to your esophagus from acid reflux (GERD). It also treats heartburn, stomach ulcers, and conditions like Zollinger-Ellison syndrome where the body makes too much acid. Rabeprazole can also be used with antibiotics to get rid of a bacteria called H. pylori that can cause ulcers.
Amoxicillin kills bacteria by stopping them from building cell walls. Some bacteria produce a substance called beta-lactamase, which can destroy amoxicillin. Clavulanate blocks beta-lactamase, allowing amoxicillin to effectively kill the bacteria.
Rabeprazole works by blocking the enzyme in your stomach that produces acid. This helps to lower the amount of acid in your stomach. Lowering stomach acid helps to heal damage and relieve symptoms.
- • Diarrhea or loose stools
- • Nausea
- • Skin rashes
- • Hives
- • Vomiting
- • Pain
- • Sore throat
- • Gas
- • Infection
- • Constipation
- Long-term kidney disease 4,661
- Sudden kidney damage 4,200
- Diarrhea 4,083
- Allergic reaction to the medicine 3,744
- Feeling sick to your stomach 3,700
- Feeling sick to your stomach 1,543
- Loose, watery stools 1,318
- Aches or soreness 1,314
- Pain in your head 1,284
- Difficulty breathing 1,276
This medicine can cause serious allergic reactions, including fatal ones. Stop taking it and get medical help right away if you have any signs of an allergic reaction. This medicine can also cause severe skin reactions. Tell your doctor if you develop a rash. It can also cause liver problems and severe diarrhea.
Taking PPIs like rabeprazole may hide signs of stomach cancer, so tell your doctor if your symptoms don't improve. This medicine may also increase your risk of bone fractures, especially if you take it for a long time or at high doses. Long-term use may also cause low vitamin B12 or magnesium levels. Contact your doctor right away if you experience signs of hypersensitivity.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if this medicine will harm your unborn baby. Amoxicillin passes into breast milk and may cause harm to a nursing infant. Talk to your doctor before breastfeeding.
It is not known if rabeprazole is safe to use during pregnancy. Talk to your doctor if you are pregnant, plan to become pregnant, or are breastfeeding.
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How to Read This amoxicillin vs rabeprazole Comparison
amoxicillin is classified in the Penicillin Antibiotic drug class, while rabeprazole sits within the Proton Pump Inhibitor (PPI) class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, amoxicillin has 20,388 submissions while rabeprazole has 6,735. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known major interaction flagged in FDA labeling, attributed to rabeprazole changes the acid levels in your stomach, which can affect how the antibiotic amoxicillin is absorbed and used by your body.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between amoxicillin and rabeprazole - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.