Patients with cerebral blood supply deficiency are not recommended to take Du Liang Soft Capsules. Although Du Liang Soft Capsules are composed of Chuanxiong and Angelica dahurica, which have the effect of dispelling wind and dispersing cold and activating blood circulation, these two drugs of Du Liang Soft Capsules are more effective for headache symptoms caused by wind and cold, blood stasis and blocked veins and channels, and can be used for head swelling and pain or tingling, recurrent attacks, and when the patient is aggravated by wind and cold, it is better to take Du Liang Soft Capsules. Patients with cerebral blood supply deficiency are recommended to take Chinese patent medicines with blood activating and blood stasis removing ingredients and stronger, clinically such as Ginkgo biloba ketone ester drops, Ginkgo biloba leaf extract tablets, blood plugging tablets, vermifuge and snake Tongluo capsule, compound Dilong capsule, these Chinese patent medicines are better to improve the blood circulation in the brain, have the effect of blood activation and blood stasis removing, and improve the symptoms of dizziness of patients.