Calamus has the effect of opening the orifices and expelling phlegm, awakening the mind and promoting wisdom, resolving dampness and opening the stomach (through the elimination of dampness to normalize the function of the stomach and intestines), and is used in neurosis and epilepsy, forgetfulness and insomnia, tinnitus and deafness, epigastric rumpus and lack of hunger, and silencing of the mouth and dysentery, and other diseases. Acorus calamus is the dried rhizome of Acorus calamus in the family of Tennessee. Its taste is pungent, bitter, warm, attributed to the heart, stomach meridian, with the opening of phlegm, wake up the spirit of wisdom, dampness and stomach effects. Acorus calamus is pungent, bitter, dry, warm, aromatic, good at transforming dampness, exclude phlegm, and open the orifices to wake up the mind, treatment of stroke, phlegm and mental confusion. It enters the heart meridian and opens the orifices of the heart, treating forgetfulness and insomnia, excessive dreaming, palpitation and palpitation (violent heartbeat and panic). This product has an aromatic odor, transforming dampness to awaken the spleen and stomach, treating dampness and obstruction in the middle of the body, epigastric plumpness and lack of hunger, and silencing dysentery. The adverse effects and contraindications of this drug are not known. If there is a need for medication, it is recommended to use it under the guidance of a professional physician, not blindly self-medication.