Hi If you google saw palmetto for prostate enlargement and also try, cayenne pepper for prostate enlargement, you may just find a lot more answers, from what I read they will help, just remember nuguys uro would say that, he's first a doctor and he runs a business, would not want some dumb arse patient taken a cheap herb when he can earn a living out of him.
Look if you put your faith in herbs then try in, but please make sure you do lots of background work, read lots of sites, see which ones you believe in, some sites are just full of shit, but the good ones are there, try
www.earthclinic.com see what other users are saying and other things there trying, just like cayenne pepper, I do know this is good for the prostate and its health.
Do hope this helps and you find more help.
Good Luck