Orris Root is known as a diuretic, which promotes the flow of urine from the body. It is thought to be helpful in cases of water retention problems and has been used to relieve dropsy and edema (fluid retention in the body that causes swelling and discomfort). The root has also been thought to clear the liver of congestion. Orris Root has been used for centuries for complaints of the lungs, helping to loosen and expel phlegm and excess mucus and ease bronchitis, hoarseness, dry cough and sore throat. Orris Root is an agent that gives strength and tone to the stomach, helps to stimulate digestion and improve the appetite. Orris Root is also said to relieve colic. Should not be given in large doses. Orris Root is considered an emetic, a substance that produces vomiting; and, in fact, large doses will cause nausea and vomiting.