【Nature and flavor and meridians】Warm in nature, bitter in taste; slightly toxic. Enters the lung and large intestine meridians.
 [Effects] Reduces qi, eliminates phlegm, relieves cough, relieves asthma, and moistens the intestines and promotes bowel movements.
 [Indications] Cough caused by exogenous factors, wheezing, throat congestion, dry intestines and constipation.
 【Contraindications】1. Avoid taking too much internally to avoid poisoning. 2. Avoid taking if you have yin deficiency cough or loose stools.
 【Medical records】
 "Ben Jing": "It is used to treat cough, upper breath, thundering, throat paralysis, lower breath, postpartum milk, gold sores, cold heart and running pig."
 "Compendium of Materia Medica Annotations": "It can detoxify tin and hufen."
 "Bie Lu": "It is used to treat epilepsy, irritability and heat in the lower part of the heart, the coming and going of wind qi, occasional headaches, relieve muscle pain, relieve heart urgency, and kill dog poison."
 "Medicinal Properties": "It can treat abdominal obstruction, induce sweating, and treat febrile diseases. It can treat acute fullness and pain under the heart, relieve heart and stomach discomfort, treat lung qi cough, and shortness of breath. Add asparagus cochinchinensis to decoct to moisten the heart and lungs. It can be made into s