Saw palmetto extract is taken from the deep purple berries of the saw palmetto fan palm, which is known as Serenoa repens. Saw palmetto is a fan palm that grows as a tree or shrub and has lush, green leaves that fan out from its thorn stem. It can reach heights of 10 feet in warm climates, with leaf clusters that can reach two feet or more.
The plant is a native of West Indies, and in the United States, saw palmetto grows in the warm climates of the southeast coast, from South Carolina to throughout Florida.
Saw palmetto benefits have been known for centuries, and the plant has been used in traditional, eclectic and alternative medicine. Its active ingredients include fatty acids, plant sterols and flavonoids. The berries also contain high molecular weight polysaccharides (sugars), which may reduce inflammation that's at the root of most diseases and strengthen the immune system - thus adding immune system booster to the list of saw palmetto benefits.