Tormentil is one of the most useful astringents for cases of diarrhea, especially when it is acute or neurologically caused. It is often used as a part of the treatment for mucus and ulcerous colitis. Tormentil as an astringent mouthwash is beneficial for the mucus membranes of the mouth and throat and can help with laryngitis, pharyngitis, gum bleeding, mouth ulcers as well as other similar conditions.