(See also Overview of Medicinal Herbs and Nutraceuticals.)
The plant’s berries can be made into tea. Saw palmetto is also available as tablets, capsules, and a liquid extract.
Saw palmetto opposes the actions of testosterone. Many men take saw palmetto to treat benign enlargement of the prostate gland (benign prostatic hyperplasia). In a number of studies, saw palmetto relieved the symptoms of an enlarged prostate gland, such as the frequent urge to urinate. However, a large, well-designed study did not show any benefit.
Claims that it increases sperm production, breast size, or sexual vigor are unproved.