Hi, this caught my eye, as I do have a heart condition (Mitral/Arotic Valve replacement) and I also have had my thyroid removed and I am taking synthroid 0.2mg daily for 26 yrs and coumadin 9mg daily for 9 yrs
Yes coumadin does counter-react with synthoid
A good knowledgeable Pharm should tell you this, and your Pharm should of caught this and explained this to you
My Dr. has to keep me adjusted for my coumadin dose per my thynthroid dose, meaning if my synthoid changes, we have to change my coumadin dose to keep me on a therapeuatic level
While you are on coumadin, I would highly sugest you get some more info on the med because there are so many things that will affect your therapeuatic level if you are not familar with them, ie; vitamin k foods, over counter/other meds, teas, so much, your Phram should be able to help you with this also.
I hope I haven't confused you and I hope this has helped you understand the 2 meds a bit more
I just did a search for "coagulation hypothyroid" and saw one article saying that being hypo caused hypocoagulation and then ther was another reference stating that it can hause hypercoagulation and heart issues.
Try a search and look at reputable sites. Maybe somone else will come along and have some experience with your situation.
Good luck