Yuan Hu, also known as Yan Hu Suo, decoction is generally used 3 to 10 g, powder is generally taken 1.5 to 3 g each time, the specific dosage should be determined by the doctor according to the condition. Yuan Hu is the dried tuber of the perennial plant Yan Hu Suo, which has the effect of activating blood circulation, promoting qi circulation and relieving pain. It can be used in the treatment of chest (chest and rib area), epigastric (abdomen) pain, thoracic paralysis (chest pain), heart pain, dysmenorrhea, postpartum stasis and other conditions. The specific dosage of yanhuisuo should be determined by the doctor according to the severity of the disease, the way of taking, etc., the general decoction of 3 to 10g, if the powder is taken, usually 1.5 to 3g each time. It is worth reminding that the choice of Chinese herbs, usage, dosage, etc. should be carried out under the guidance of the doctor’s diagnosis, do not blindly use on their own, in order to prevent harm to the body.