I was put on zytiga in early 2012, along with prednisone. By July of 2012, my Onco took me off the zytiga - then onto taxotere.
My side effects on zytiga were very minimal regarding pain, but ... I did badly lose my apattite for most of the 5-months on zytiga. There was very little hair loss, and my energy level was Ok also. But, the weight loss was close to 45 pounds in those 5-months.
I have read so many posts about the three types of chemo I've been on, and it seems that what you read, at best, are tendencies. Each of our bodies are different, along with age and an enourmous amount of other variables ... it is difficult to get a good grasp of wht to expect. I know, I have had the same concerns.
With my latest chemo (oral) - Xtandi, I called the supplier and talked to their on-staff pharmacist for info on side effects. She gave me percentages of the those SE's reported, and it was of some help.
Best wishes ........ Rob
Initial Dx of PCa in 2003/2004
Radiation (5x5wks) & Brachytherapy (96 seeds) in 2004
Low PSA for 6-years
Casodex first - then Lupron from mid-2011 to current
Zytiga from January 2012 (5-months) - PSA increase
Prednisone from early 2012 & Xgeva from mid 2012
Taxotere from August 2012 (30-weeks) - PSA from 54+ to 12+
No chemo (8-weeks) - PSA from 12+ to over 23
Xtandi start - late June 2013 ......