Hi my name is Robbie. i was told I would not have hair loss on this drug. Well at the end of my second cycle I was put on synthroid. Apparently, sutent can damage your thyroid. After the 10th or 11th day of the thyroid med. I started shedding big time. I lost about 50% of my hair that week and another 20% over the next two weeks. My Dr. thinks it is from the thyroid restarting again. You might want to have it checked out. It has been most distressing!!!!!. If you are a guy it might not bother you as much, for me i still don't like messing with turbans and scarves and wigs. I notice so many guys walk around with shaved heads, but not many women. Do get it checked.