Native to Central and South America, this herb was introduced in Europe in the 16th century for use as a tonic. Widely accepted as a blood purifier, sarsaparilla also is well regarded as a tonic for overall health and wellbeing. Native Americans used sarsaparilla for stomach and skin health, and to promote respiratory, kidney and urinary tract health. Each two-capsule serving of Swanson Full Spectrum Sarsaparilla Root delivers 900 mg of sarsaparilla root.