Hi Deirdre,
Ge Xia Zhu Yu Tang is getting my vote these days for prostatic adenocarcinoma. I've also noted that it has a urethral dilating effect making it helpful in FUS as well as BPH in men. It's where I'd start.
The other option is to use Xiao Chai Hu Tang with it. There used to be a very helpful product for men for prostate cancer on the market called PC-SPES that the FDA yanked because it was convinced that if it worked so well, it must contain estrogen. It didn't, but it hasn't been re-released, because it's the object of intense study. One day you'll be able to buy it again as a drug for about a hundred times the original cost.
Okay, enough sarcasm, Steve. Enough to say that PC-SPES was modeled on Xiao CHai Hu Tang, which you would probably consider using anyway to enhance the efficacy of your Blood-moving GXZYT. So I'd try the two together and see what happens.
All the best,
Steve