The Chinese medicine ephedra is not recommended to use 20 grams, the general dosage of 2 ~ 10 grams, with too much, easy to sweat too much, resulting in weakness. Ephedra is the dried herbaceous stems of ephedra, grass ephedra or woodchuck ephedra of the ephedra family, belonging to the dispersing wind-cold medicine in the antidote medicine. Ephedra into the bladder meridian, lung meridian. Ephedra is pungent, bitter and warm. Ephedra has the effects of promoting the lungs and calming asthma, sweating and relieving the surface of the body through sweating, and inducing diuresis and eliminating edema. Ephedra is used in the treatment of wind-cold cold, chest congestion, cough, wind-water (sudden edema of the head, face and limbs), edema, wind-cold-dampness paralysis (paralysis of the limbs caused by wind, cold, dampness and three kinds of evils invading the human body), yin gangrene (a kind of slow-acting yin sores and ulcers), phlegm nuclei (subcutaneous swellings such as nuclei of the lumps), etc. Ephedra is strong in sweating and lung promotion, so it should be used with caution in cases of surface deficiency and spontaneous sweating (frequent natural sweating due to weakness of the muscle surface), yin deficiency and night sweating (abnormal sweating after falling asleep and stopping sweating after waking up), and lung and kidney deficiencies with wheezing. Adverse effects of Ephedra are not known. If needed, please use under the guidance of a professional Chinese medicine practitioner.