When I was younger, I use to mega dose it. I feel it helped me keep the majority of my hair and eased with urinating. But now, much older, I'm prescribed avodart and flomax. Doc told me to not mix saw palmetto with the meds.
I have used saw palmetto for many many years every day and will continue to do so as long as my AS intake is at or higher than 500mg per week. I use 1 or 2 caps a day.
Even when using relatively high dosages of gear, my prostate results remain greatly below the normal "size".