paroxetine vs warfarin
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Side-by-side comparison of paroxetine 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
For patients taking warfarin, carefully monitor the international normalized ratio [see Warnings and Precautions ( 5.5 )] . Examples aspirin, clopidogrel, heparin, warfarin Drugs Highly Bound to Plasma Protein Clinical Impact Paroxetine is highly bound to plasma protein. Examples warfarin Drugs Metabolized by CYP2D6 Clinical Impact Paroxetine is a CYP2D6 inhibitor [see Clinical Pharmacology ( 12.3 )] .
Paxil
Coumadin, Jantoven
Paroxetine (Paxil) is a medicine that can help treat depression and anxiety disorders. It belongs to a class of drugs called selective serotonin reuptake inhibitors (SSRIs).
Warfarin is a medicine that helps prevent blood clots. It is used to treat and prevent dangerous clots from forming in your body.
Paroxetine is used to treat several conditions in adults. These include major depressive disorder (MDD), obsessive compulsive disorder (OCD), panic disorder (PD), social anxiety disorder (SAD), generalized anxiety disorder (GAD), and posttraumatic stress disorder (PTSD). It helps to improve mood and reduce anxiety and panic feelings.
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.
Paroxetine works by increasing the amount of serotonin in your brain. Serotonin is a natural substance that helps regulate mood. By increasing serotonin levels, paroxetine can help improve symptoms of depression and anxiety.
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.
- • Abnormal ejaculation
- • Weakness or fatigue
- • Constipation
- • Decreased appetite
- • Diarrhea
- • Bleeding from any tissue or organ
- Drug Interaction 1,825
- Fatigue 1,821
- Nausea 1,738
- Toxicity To Various Agents 1,579
- Anxiety 1,476
- International Normalised Ratio Increased 10,276
- Dyspnoea 8,408
- Drug Interaction 6,288
- Fatigue 6,143
- Nausea 5,921
Antidepressants may increase the risk of suicidal thoughts and behaviors in young adults. Your doctor will monitor you closely for worsening depression or suicidal thoughts. Paroxetine is not approved for use in children.
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.
Paroxetine may cause harm to your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. Taking paroxetine later in pregnancy may cause problems for the newborn.
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 paroxetine vs warfarin Comparison
paroxetine is classified in the Selective Serotonin Reuptake Inhibitor (SSRI) 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, paroxetine has 8,439 submissions while warfarin has 37,036. 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 paroxetine can interfere with how warfarin is processed and how it binds to blood proteins. this can increase the risk of bleeding.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for paroxetine or warfarin.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.