Saw Palmetto (Berry Good for the Prostate) extracted from the dark purple berries of the American saw palmetto plant. Saw Palmetto claims as a supplements benefits such as Shrinks the prostate, reduces symptoms of benign prostatic hyperplasia (BPH). BPH is an overgrowth of the cells in the prostate gland, possibly due to changes in hormone levels that occur with age. Saw palmetto help block conversion of testosterone to another form (DHT), which has a stimulatory effect on prostate cells. See the links of products for more details.