Dear Titrouble,
You might have your father check with his oncologist to see if he could try a lower doseage of Sutent. I believe it comes in 50 mg, 37 mg, and 25 mg doses. I was on Sutent for 12 cycles and am now on a medication called Avastin. You might have your dad talk to his dr. about that medicine if he is unable to endure the Sutent.
Good luck!
Terry