It is not known how toxic ephedra is. Ephedra, has the effect of sweating and relieving the surface (through sweating to relieve the surface of the body of the evil), declaring the lungs to calm the asthma, diuresis to eliminate edema (diuresis, eliminating edema). Ephedra is mainly used for external wind-cold syndrome, cough and shortness of breath, wind-water (sudden edema of the head, face and limbs), edema, wind-cold-dampness paralysis (wind, cold, dampness, three kinds of evil qi invasion of the human body leading to paralysis of the limbs), yin gangrene (a kind of slow condition of the negative sores and ulcers of the disease of the general term) phlegm nucleus (the subcutaneous swelling of nodules such as the nucleus), and so on. Adverse effects of ephedra: Clinical if excessive intake of ephedra, can lead to poisoning, can be seen headache, restlessness, insomnia, chest tightness discomfort, dizziness, epigastric discomfort, nausea, vomiting, tinnitus, thirst, facial flushing and other symptoms. If you need to use ephedra, it must be used under the guidance of a professional doctor.