System Restoration Reproductive Herbal Supplement Gluten-Free Saw Palmetto Liquid Extract Supports healthy prostate function in men. Our Saw Palmetto assayed extract is prepared from the ripe berries of Serenoa repens palms that have been Sustainably Wildcrafted in their native habitat. Using only mature berries ensures the extract contains high levels of the fatty acids and sterols that support prostate gland health.