A North American native herb, goldenseal is widely known and used for colds, flu, dyspepsia, gastritis, and sinus and bladder infections. It is especially useful for diarrhea and chronic excess mucus in the bowels, with attendant loss of efficiency in absorbing nutrients and eliminating wastes. It is indicated for bacterial or amebic infections of the digestive tract, such as giardia and dysentery. Topically it is useful for conjunctivitis, gum problems, and ear inflammations. Because of its astringency, it is often used as a douche for vaginal problems or infections from candida or trichomonas. Goldenseal cools infections of the mucous membranes, cleanses the blood, and lowers inflammation. The powder can be sprinkled on cuts or wounds to help stop bleeding.