Ephedrine is used for temporary relief of shortness of breath, chest tightness, and wheezing due to bronchial asthma. ... Ephedrine is a decongestant and bronchodilator. It works by reducing swelling and constricting blood vessels in the nasal passages and widening the lung airways, allowing you to breathe more easily https://www.drugs.com/ephedrine.html
http://www.bjnews.com.cn/world/2020/03/03/698203.html