Hello ......
Success and SE's both vary tremendously with any PCa med.
I was on Xtandi for only 2-months. It was right after going thru 30-weeks of Taxotere chemo. Actually, it was about two months after stopping the Taxotere.
For me, the Xtandi did not work at all. For many in my Oncologists office, it did work! My PSA just continued to rise, so it was only two months for me. The SE's were an extension of the Taxotere SE's ... and withonly two months on Xtandi, that is not a fair comparison.
Again - for many, it does work.
Wishing you well.
Rob & Gizmo