Fast Facts. 1  Granulomatosis with polyangiitis (Wegener's) â GPA â is serious but treatable. 2  The cause of GPA is unknown. 3  GPA often affects the sinuses, lungs and kidneys, and can lead to kidney failure.  Recurrences of this form of vasculitis are common.
Warfarin is the oral anticoagulant most frequently used to control and prevent thromboembolic disorders. Prescribing the dose that both avoids hemorrhagic complications and achieves sufficient suppression of thrombosis requires a thorough understanding of the drug's unique pharmacology.
Coumadin (crystalline warfarin sodium) is a brand of anticoagulant (blood thinning) medication. âAntiâ means against and coagulant means causing blood clotting. Coumadin controls the way blood clots inside your blood vessels. Coumadin makes your blood thinner and less likely to clot.oumadin is taken as a pill each day. You will need to get regular blood tests to tell how well the medication is working. The test results help the doctor decide the dose of coumadin that will keep a balance between clotting and bleeding. Your doctor will use the results to make changes in the dose of medication.