Saw palmetto is a shrub like palm native to the southeastern United States. Historically, it was used for a variety of conditions, including disorders of the male and female reproductive organs and coughs due to various diseases. Itâs often used to treat enlarged prostate, improve urinary function, and enhance hair growth. Some also use the supplement to boost libido and fertility and reduce inflammation., as well as for chronic pelvic pain, migraine, hair loss, and other conditions. Many studies have evaluated various preparations of saw palmetto for urinary tract symptoms associated with prostate enlargement in men. The plant grows in sandy soil and gets its name from the sharp, saw-like teeth on the stalks that attach the treeâs leaves to its stem. The saw palmetto tree produces dark berries that contain a large seed. the powder is the extracts from the whole fruit.