rabeprazole vs warfarin
Side-by-side comparison of rabeprazole and warfarin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
Warfarin Clinical Impact: Increased INR and prothrombin time in patients receiving PPIs, including rabeprazole, and warfarin concomitantly. Dose adjustment of warfarin may be needed to maintain target INR range. See prescribing information for warfarin.
Recommendation: Your doctor should monitor your blood clotting levels closely and may need to adjust your warfarin dose.
Aciphex
Coumadin, Jantoven
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).
Warfarin is a medicine that helps prevent blood clots. It is used to treat and prevent dangerous clots from forming in your body.
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.
Warfarin is used to prevent and treat blood clots in your veins and lungs. It can also prevent clots if you have atrial fibrillation (irregular heartbeat) or a replacement heart valve. After a heart attack, it can lower the risk of death, another heart attack, or a stroke.
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.
Warfarin works by blocking your body's use of vitamin K. Vitamin K is needed to make blood clotting factors. By blocking vitamin K, warfarin makes your blood less likely to clot.
- • Pain
- • Sore throat
- • Gas
- • Infection
- • Constipation
- • Bleeding from any tissue or organ
- 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
- INR increased 10,275
- Shortness of breath 8,408
- Interaction with another medicine 6,289
- Tiredness 6,141
- Feeling sick to your stomach 5,921
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.
Warfarin can cause major or fatal bleeding. You must have your blood tested regularly (INR) while taking warfarin. Many things, like other medicines and diet changes, can affect your INR. Tell your doctor about any bleeding and follow their instructions to prevent bleeding.
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.
Warfarin can harm your unborn baby, especially during the first three months of pregnancy. Do not take warfarin if you are pregnant, unless you have a mechanical heart valve and your doctor says the benefits outweigh the risks. Talk to your doctor if you are breastfeeding, and watch your baby for bruising or bleeding.
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How to Read This rabeprazole vs warfarin Comparison
rabeprazole is classified in the Proton Pump Inhibitor (PPI) drug class, while warfarin sits within the Vitamin K Antagonist (Anticoagulant) 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, rabeprazole has 6,735 submissions while warfarin has 37,034. 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 minor interaction flagged in FDA labeling, attributed to rabeprazole can cause warfarin to stay in your system longer, which increases the risk of bleeding.. 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 rabeprazole and warfarin - 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.