Ephedra is a small shrub of Ephedraceae. Ephedra has a strong effect of sweating and relieving exterior syndrome. In addition, for some patients with cough, ephedra also has a good effect.
Clinically, Ephedra often forms Mahuang decoction with Ramulus Cinnamomi to treat patients with fever, and Ephedra can also form Sanao decoction with almond and licorice to treat patients with cough. It should be noted that ephedra has a particularly strong sweating ability, and patients with insomnia and hypertension cannot use ephedra.
Ramulus Cinnamomi, also known as Cinnamomum cassia, is a dry twig of Cinnamomum cassia in Lauraceae. Before use, cassia twig needs to be dried in the shade or in the sun, and then cut into small pieces for later use. Guizhi has a good effect on patients with cold and palpitation. It should be noted that pregnant women or patients with menorrhagia cannot use cassia twig.