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Many: As dr. Villaplana said, there are several. There are shots and pills. Although using alternatives to warfarin means that you don't have to be as careful about what you eat and you don't have to have regular blood tests to check whether you are getting too much or too little warfarin, they still have drawbacks. One of the most significant is that the alternatives are all a lot more expensive. ...Read moreSee 1 more doctor answer
Multiple interaction: Warfarin inhibits vit k action in the liver (a necessary step in forming many of your clotting factors). It is ingested in your diet and stored in the liver. Genetic variations in how the vit k is incorporated enzymatically into these factors is relevant (sometimes people require either very little or lots of warfarin). Diet changes w more or less vit k affect pt inr as do drug interactions. ...Read moreSee 1 more doctor answer
Anything. & Careful!: First of all pay attention to the fact that warfarin therapy is life saving in range and life threatening outside that range. Technically you can and should have a varied, healthy diet. That said, you must be cognizant of the fact that dark leafy greens absolutely affect the pt/inr. On the other hand if you eating consistent amounts of greens, your levels should not vary. Check pt-inr regularly. ...Read moreSee 1 more doctor answer
At least a few days: It can take up to 5 or more days for the medication to reach therapeutic effect. Sensitivity to the medication is based on genetic factors, as well as interaction with diet and other medications. Other newer anticoagulants may work within hours. ...Read moreSee 1 more doctor answer
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