Warfarin
"I have been on Warfarin for about 6 months now.  I had a kidney removed and later it was discovered through testing that I had a blood clot in my leg, therefore, my physician put me on Warfarin.  I have been up and down with my dosages as one time my INR was too high and then it's too low - as of now I am alternating doses every other day - I will see next week if that helps keep my INR steady.  I have not noticed any side effects from this drug, but I am also on a kidney drug which has given me quite a few side effects so maybe I just don't notice any from the Warfarin."