Saw palmetto
extract has been studied as a possible treatment for people with
prostate cancer and for men with lower urinary tract symptoms associated with
Benign prostatic hyperplasia (BPH).
[3][5][6] As of 2018, there is insufficient
scientific evidence that saw palmetto extract is effective for treating cancer or BPH and its symptoms.
[5][6][7]
One 2016 review of clinical studies with a
standardized extract of saw palmetto (called
Permixon) found that the extract was safe and may be effective for relieving BPH-induced urinary symptoms compared against a
placebo.
[8] Wikipedia