Du Liang Soft Capsules is a kind of proprietary Chinese medicine, which is usually useful for the treatment of headache caused by wind-cold and blood stasis blocking the veins and channels. This product is mainly composed of two Chinese medicines, Rhizoma Ligustici Chuanxiong and Angelica dahurica, which have the efficacy of dispelling wind and dispersing cold (dispelling wind evil and dispelling cold evil) and activating blood circulation. Patients with headache due to wind-cold and blood stasis blocking the veins and collaterals, which is characterized by distending or stabbing headache, recurrent pain with fixed location, triggered or aggravated by wind-cold, can usually get relief from the symptoms by taking this product. A few patients may experience nausea, vomiting, dizziness, headache, abdominal pain, skin rash and other adverse reactions, usually disappear after stopping the drug, does not affect the therapeutic effect, but if the headache is severe, it is recommended to consult a doctor in time. Contraindicated in pregnant and lactating women. Allergic to this product and the ingredients contained in it are prohibited. Avoid smoking, alcohol and spicy, cold and greasy food. It is not suitable to take tonic Chinese patent medicines at the same time during the medication. Patients are advised to take this product under the guidance of traditional Chinese medicine practitioners.