Ephedra: Functions, Benefits, and Contraindications

Ephedra has the effects of inducing sweating to relieve exterior symptoms, promoting lung function and relieving asthma, and promoting diuresis to reduce edema. It is used to treat conditions such as colds due to wind-cold invasion, chest tightness, coughing, and wheezing. Ephedra is contraindicated in individuals with yin deficiency accompanied by night sweats or blood deficiency with fatigue, to avoid worsening their condition. Ephedra contains toxic components; overdose may lead to poisoning, causing symptoms such as nausea, vomiting, and abdominal pain. In severe cases, it may result in difficulty breathing or coma. Ephedra should only be used under the guidance of a physician to avoid self-medication. If adverse reactions occur, prompt medical attention is recommended.