enoxaparin vs rivaroxaban
Side-by-side comparison of enoxaparin and rivaroxaban. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
moderate Known Drug Interaction
7.4 Anticoagulants and NSAIDs/Aspirin Coadministration of enoxaparin, warfarin, aspirin, clopidogrel and chronic NSAID use may increase the risk of bleeding [see Clinical Pharmacology (12.3) ].
Recommendation: Your doctor should monitor you closely for signs of bleeding if these drugs are used together.
Lovenox
Xarelto
Enoxaparin (Lovenox) is a type of blood thinner. It helps prevent and treat blood clots.
Rivaroxaban (Xarelto) is a drug that helps to prevent blood clots from forming. It is used to lower the risk of stroke and treat or prevent dangerous clots in your veins and lungs.
This medicine can prevent blood clots from forming after surgery or during illness when you are not moving around much. It also treats blood clots in your veins, with or without a pulmonary embolism (a blood clot in the lungs). Enoxaparin can also help prevent chest pain and heart attacks.
This medicine can help prevent strokes in people with an irregular heartbeat called atrial fibrillation. It also treats blood clots in the legs (deep vein thrombosis or DVT) and lungs (pulmonary embolism or PE). Rivaroxaban can also lower the risk of these clots coming back. It is also used to prevent blood clots after hip or knee replacement surgery and in acutely ill patients.
Enoxaparin works by blocking certain proteins in your blood that help clots form. This helps to prevent new clots from forming and keeps existing clots from getting bigger. It makes your blood less likely to clot.
Rivaroxaban is a factor Xa inhibitor. It blocks a substance in your blood called factor Xa. By blocking factor Xa, the medicine helps to prevent blood clots from forming.
- • Bleeding
- • Low red blood cell count (anemia)
- • Low platelet count (thrombocytopenia)
- • Increased liver enzymes
- • Diarrhea
- • Bleeding
- • Cough
- • Vomiting
- • Gastroenteritis (inflammation of the stomach and intestines)
- Shortness of breath 2,369
- Feeling sick to your stomach 2,353
- Loose or watery stools 2,244
- Low red blood cell count 2,190
- Low platelet count 2,066
- Bleeding in the stomach or intestines 21,559
- Bleeding 7,713
- Shortness of breath 7,149
- Nosebleed 6,698
- Tiredness 6,546
Enoxaparin can cause bleeding around your spine if you get an epidural or spinal tap. This can lead to long-term or permanent paralysis. Tell your doctor if you are taking other medicines that can increase bleeding, like NSAIDs (such as ibuprofen) or aspirin. Your doctor will monitor you for signs of nerve problems.
This medicine has two important warnings. First, stopping this medicine too early can increase your risk of blood clots. Do not stop taking it without talking to your doctor first. Second, if you receive spinal anesthesia or have a spinal puncture while taking this medicine, you have a risk of a blood clot forming around your spine, which can cause long-term paralysis.
Tell your doctor if you are pregnant or plan to become pregnant. Enoxaparin may not be safe for your baby. Discuss the risks and benefits with your doctor.
Talk to your doctor if you are pregnant or plan to become pregnant. This medicine may cause bleeding problems during pregnancy and delivery. It is not known if this medicine passes into breast milk, so talk to your doctor about the risks and benefits of breastfeeding.
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How to Read This enoxaparin vs rivaroxaban Comparison
enoxaparin is classified in the Low-Molecular-Weight Heparin drug class, while rivaroxaban sits within the Direct Oral Anticoagulant (Factor Xa Inhibitor) 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, enoxaparin has 11,222 submissions while rivaroxaban has 49,665. 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 moderate interaction flagged in FDA labeling, attributed to both drugs are blood thinners that work in different ways to prevent clots. taking them together makes your blood much thinner and increases your chance of dangerous 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 enoxaparin and rivaroxaban - 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.