Hi. Im Al and I was hospitalized in September for 10 days for multiple PEs in my legs and lungs. My INR during the past month has been 3,2, and yesterday 1.8. My doctor upped my coumadin from 3.75 for only 2 days a week and 7.5 for the other 5. Is there a reason why the INR keeps dropping? Thanks
Hi, dear. I have gone through your question. I can understand your concern. In case of pulmonary embolism you should maintain your INR between 2 and 3. Effect of warfarin is decreased in your body. So we have to increase dose to maintain the level of INR. There are many causes for reduced the effect of warfarin.  You may have some Chat Doctor.  So just need to increase the dosage.  Go for repeat INR test after a month. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health.