I would agree with PDA.
I've been using it a mix of a few times a month as part of rehab, as well as for what it was intended for, and have no apparent side effects after 5 years. Yes, a couple of aborted trips to the ER when I pushed the dosage, but I know better now. Be happy with what works ....
Now we do need to remember that there have been guys here who pushed it to 20+ times a month, even multiple times a day, and they have had problems / complaints. But for me it is the golden egg, and I'm not about
to tempt fate.
Now that I have to pay 100% retail out of pocket, and it is less important with the Lupron / XTANDI mix, I'll need to remove myself from the study pool.