A Year And A Half Ago My PSA Rose From

A year and a half ago my PSA rose from 3 to 5 so was referred to a urologist. He wanted to perform a biopsy and described how a prostate was removed. I asked my primary physician for another referral who said he'd like to wait and see and PSA dropped back to 4. He said my prostate was not enlarged but I get up three to four times every night. He gave me a sample of Cialis 5mg which worked but costs over $300/month.
Can I take a large mg of saw palmetto?