Calamus is mostly used to treat stroke, insomnia, tinnitus, deafness and coma. Calamus is pungent, bitter and warm. It belongs to the heart and stomach meridians. It has the efficacy effect of opening the orifices by removing phlegm, waking up the mind, and opening the stomach by removing dampness. It is used in treating dizziness and epilepsy, forgetfulness and insomnia, tinnitus and deafness, epigastric congestion and hunger, and diarrhea. This product is used for treating phlegm-enchanted heart and orifices, confusion of the mind, high fever, dizziness, epilepsy and convulsions caused by stroke. It is also used to treat tinnitus, deafness, dizziness, palpitation and insomnia caused by deficiency of the heart and spleen, and upward disturbance of phlegm (phlegm evil invading the head). This product is mostly used for the treatment of abdominal pain, gastric pain and plumpness (stomach distension and discomfort) caused by dampness and turbidity in dampness obstructing the middle jiao (dampness obstructing the functions of the spleen and stomach). If there is any discomfort, it is recommended to consult a doctor in time and use the medicine under the guidance of a professional doctor.