Package | Dosage | Price | Price per Dose | |
---|---|---|---|---|
Dosage: 1mg | ||||
360 pill | 1mg | $179.99 | $0.50 | |
180 pill | 1mg | $98.99 | $0.55 | |
120 pill | 1mg | $73.99 | $0.62 | |
90 pill | 1mg | $58.99 | $0.66 | |
60 pill | 1mg | $42.99 | $0.71 | |
30 pill | 1mg | $22.99 | $0.77 | |
Dosage: 2mg | ||||
360 pill | 2mg | $215.99 | $0.60 | |
180 pill | 2mg | $116.99 | $0.65 | |
120 pill | 2mg | $83.99 | $0.70 | |
90 pill | 2mg | $67.99 | $0.76 | |
60 pill | 2mg | $50.99 | $0.85 | |
30 pill | 2mg | $28.99 | $0.98 | |
Dosage: 5mg | ||||
360 pill | 5mg | $240.99 | $0.67 | |
240 pill | 5mg | $169.99 | $0.71 | |
180 pill | 5mg | $141.99 | $0.79 | |
120 pill | 5mg | $107.99 | $0.90 | |
90 pill | 5mg | $89.99 | $1.00 | |
60 pill | 5mg | $60.99 | $1.01 | |
30 pill | 5mg | $31.99 | $1.07 | |
20 pill | 5mg | $22.99 | $1.13 | |
10 pill | 5mg | $10.99 | $1.14 |

Warfarin Description
Introduction to Warfarin
Warfarin is a widely used anticoagulant medication, often prescribed to prevent and treat blood clots. It works by inhibiting the synthesis of vitamin K-dependent clotting factors, which are essential for blood clot formation. Due to its effectiveness, warfarin has been a mainstay in the management of various clotting disorders for many decades. Patients with conditions like atrial fibrillation, deep vein thrombosis, or pulmonary embolism often rely on warfarin to reduce their risk of potentially dangerous clot formation.
How Warfarin Works
Warfarin affects the liver’s ability to produce certain proteins required for blood clotting. By blocking vitamin K, it decreases the amount of active clotting factors in the bloodstream. This effect prolongs clotting time, which helps prevent existing clots from growing and new clots from forming. Because of this mechanism, careful monitoring of blood levels—often using the international normalized ratio (INR)—is necessary to ensure the medication works effectively without increasing bleeding risk.
Usage and Dosage
Warfarin is typically prescribed in tablet form, with dosages tailored to each patient’s needs based on their INR results. Starting doses may vary, but adjustments are common to achieve and maintain the desired INR range, usually between 2.0 and 3.0 for most indications. Patients are advised to take warfarin at the same time each day to maintain stable blood levels. Regular blood tests are essential for tracking the medication's effect and making dosage modifications as needed.
Advantages of Warfarin
One of the longstanding benefits of warfarin is its proven effectiveness in reducing the risk of stroke and embolism related to abnormal heart rhythms. It is also beneficial for patients with mechanical heart valves. Its low cost compared to newer anticoagulants makes it accessible for many users worldwide. Moreover, it has been extensively studied, and healthcare providers have a wealth of experience managing therapy with warfarin, including managing potential complications.
Potential Risks and Side Effects
Despite its benefits, warfarin carries a significant risk of bleeding. Patients may experience bruising, bleeding gums, blood in urine or stool, or more severe hemorrhages. Certain foods rich in vitamin K, such as green leafy vegetables, can affect warfarin’s efficacy, making dietary consistency important. Other factors like interactions with various medications, alcohol consumption, and illness can also influence blood clotting levels, requiring vigilant management. Rare side effects include skin necrosis and purple toe syndrome.
Precautions and Monitoring
Because of the narrow therapeutic window, regular monitoring of INR is vital. Patients should inform their healthcare providers of all medications and supplements they take, as many can interfere with warfarin. It is also important to avoid changes in diet and lifestyle without medical advice. Patients should be aware of the signs of bleeding and seek immediate medical attention if they experience symptoms such as severe headache, dizziness, or unexplained bruising.
Drug Interactions and Lifestyle Considerations
Warfarin interacts with numerous drugs, including antibiotics, antifungals, and certain pain medications. These interactions can either increase bleeding risk or decrease its effectiveness. Alcohol can also influence warfarin levels, either potentiating bleeding risks or impairing its action. Lifestyle factors like maintaining a consistent diet and avoiding activities that could cause injury are important to minimize complications. Patients are encouraged to communicate regularly with their healthcare team for optimal management.
Summary
Warfarin remains a cornerstone in anticoagulant therapy due to its proven effectiveness in preventing blood clots. However, its use requires careful management, frequent monitoring, and patient education to minimize risks. Its long history and extensive clinical experience make it a reliable option for many patients, although newer medications are available with different profiles. Proper adherence to medical advice can help patients safely benefit from this medication while reducing potential adverse effects.