Been on warfarin for three months for DVT left calf. I got to this site looking up fatigue associated with the rat poison. I've also experienced increased sensitivity to sunlight both directly on my face and extreme sweating from doing lite work. I also have a constant ringing in my ears and memory seems to be worse. My dad also takes this medication and doesn't have any of the same symptoms. I will deal with it for the time being rather than have my calf swell up like a cantaloupe.