The elongated grass has a wind and dampness (to get rid of the body of wind and dampness), Shu tendons and collaterals (dredge the meridians to make the meridians smooth) of the efficacy of the elongated grass can play a certain wind and dampness, elongated grass should be based on the condition of the need to comply with the doctor’s instructions to use, is not recommended to drink for a long time. And the efficacy of water is limited, can not all play a role, if the symptoms are recommended to consult a doctor in a timely manner. The nature of the herb is warm, taste slightly sweet, belonging to the liver meridian, kidney meridian. The main effect is to dispel wind and dampness, soothing tendons and collaterals; mainly used for the treatment of joint pain, flexion and extension of unfavorable, bruises, menstrual disorders and so on. Modern medicine reports that in combination with penicillin, streptomycin, chloramphenicol, sulfonamides, benzocaine, quinidine, thimerosal, etc., allergic dermatitis can occur, so care should be taken to avoid the same use. It is contraindicated in pregnant women and those with excessive bleeding. Drugs need to be standardized under the guidance of a doctor, do not trust the prescription, so as not to cause adverse consequences.