Warfarin

How is this medication used?

Warfarin should be taken exactly as prescribed by a doctor. The dosage may vary depending on the individual's INR (International Normalized Ratio) test results, which measure how long it takes the blood to clot. Patients on warfarin need to have their blood thickness monitored regularly to ensure the medication is working effectively and to adjust the dose if necessary. It's important not to miss doses and to communicate with healthcare providers about any changes in diet, medications, or health conditions.

What are the possible side effects?

Common side effects of warfarin include bleeding more easily than normal, bruising, headache, dizziness, and gastrointestinal issues such as nausea or vomiting. Severe bleeding is the most serious side effect and can be life-threatening. Patients should seek immediate medical attention if they experience heavy bleeding, such as from cuts, in the urine or stool, or bleeding gums; also if they have a headache, dizziness, or weakness that doesn't go away.

What are the potential interactions?

Warfarin can interact with many other medications, herbal supplements, and foods. Certain antibiotics, antifungals, and anti-inflammatory medications can increase the risk of bleeding. Supplements such as St. John's Wort and ginkgo biloba can also affect warfarin's effectiveness. Additionally, foods high in vitamin K, like green leafy vegetables, can decrease warfarin's anticoagulant effect. Patients should maintain a consistent diet and discuss all new medications or supplements with their healthcare provider.

Disclaimer: The information provided on this website is for informational purposes only and is not intended as medical advice. Always consult with your healthcare provider for medical advice, diagnosis, or treatment. Images are for representation purposes only and actual packing may differ by brand and/or manufacturer.