My doctors said there should be no problem taking Viagra when on Coumadin as it relates to my mechnical valve and INR. I say this because this drug is a big "No" for certain types of heart disease patients, primarily those that have to take Nitro pills.
Since my doctors offered the drug to me, I figured hey... I got to see what this is all about, so... I now have a prescription for it. However I should also point out that I do this drug for recreational use only... LMAO
As far as Viagra effecting my INR. I haven't noticed any change with my INR when taking it.
If your doctor says it's ok for you to take it, I don't think that you will see any change in your INR. Perhaps Al has some more input from his site.
3/23/00 Ascending Aortic Dissection-St. Judes mech valve+graft, Vanderbilt, Nashville, TN
9/16/10 ON-X Aortic Valve/Root Replacment, Cleveland Clinic,OH, Dr Pettersson
9/16/10 Aortic Stent and Frozen Elephant Trunk Procedure, Cleveland Clinic,OH, Dr. Roselli