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Jantoven

Generic: Warfarin Sodium

Rx only
Vitamin K antagonist✓ FDA-verified
View full FDA label ↗
Jantoven is a medication used to prevent and treat blood clots, such as those that can occur in the veins or lungs, and to reduce the risk of serious heart problems like strokes after a heart attack. It works by blocking the action of vitamin K, which is necessary for blood clotting, helping to keep your blood from clotting too easily. You typically take it as a pill once a day, starting with a dose between 2 to 5 mg, and the maximum dose can go up to 10 mg daily, depending on your individual needs. It's important to know that Jantoven should not be taken during pregnancy, as it can harm the fetus. Additionally, if you are taking heparin, a common blood thinner, your doctor will closely monitor your treatment to ensure safety and effectiveness.

Uses

  • Prophylaxis and treatment of venous thrombosis.
  • Pulmonary embolism (PE).
  • Thromboembolic complications from atrial fibrillation.
  • Cardiac valve replacement complications.
  • Reduction of death risk after myocardial infarction.
  • Prevention of stroke or systemic embolization after myocardial infarction.

Dosage

Dosing is individualized based on INR response.
Initial dose typically 2 to 5 mg once daily.
Monitor INR daily until stable, then every 1 to 4 weeks.
Adjust dose based on INR and condition being treated.
Always follow your doctor's specific instructions for your dose.

Side effects

Common

nauseavomitingdiarrheaabdominal painrashmajor bleeding

Serious

tissue necrosisacute kidney injury
🛑

Warnings

⚠ Important warnings

  • Risk of major or fatal bleeding.
  • Regular INR monitoring is required.
  • Dietary changes can affect INR levels.
  • Consult your doctor before stopping or starting new medications.

Drug interactions

  • Anticoagulantsincreased bleeding riskCaution
  • Antiplatelet agentsincreased bleeding riskCaution
  • Nonsteroidal anti-inflammatory drugsincreased bleeding riskCaution
  • Antibioticsmay change INR levelsCaution
  • Herbal productsmay affect anticoagulation.Caution

Ask about this drug

Answers pulled from the FDA label only.

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Medical Disclaimer: This content is provided for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before taking any medication.
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).