Just got a call from our MO and dad's last PSA reading was 0.69! It has never been this low before so we're very happy with the results! We are aware that the drug won't last forever but this is a sign of a longer remission.
He started Zytiga 8 months and a half ago and the PSA always bounced up and down between 2-3 during the whole time, recently he has changed diet focusing mostly on healthy food (vegetables, fruits, fibers, etc) and is starting to feel great again.
Common side effects of Zytiga are fatigue and hot flashes but they have always been bearable.