Extracts of the saw palmetto berry (Serenoa repens) have been found to support men’s urinary flow and comfort. The saw palmetto berry is rich in the bioactive compound beta-sitosterol, which has also been found to help promote a healthy urinary stream in men. Beta-sitosterol from palmetto and pine : PalmettoGuard® Saw Palmetto with Beta-Sitosterol combines high-potency saw palmetto extract with beta-sitosterol (from pine). Boron has been added to support healthy hormonal metabolism, and a small amount of rosemary extract provides antioxidant activity. This formula is also available with nettle root for additional prostate health support.