Goldenseal (Hydrastis canadensis) is known for combating colds and flu, as well as soothing inflamed skin, eyes, throat, and mucous membranes.* It also increases bile flow and digestive enzymes and thus may improve the health of the liver and spleen.* This single herb tincture, available in many sizes, is bottled in amber glass. One, two, and four-ounce sizes include a glass dropper.