The number of days to get well from cerebral insufficiency varies from person to person depending on the condition. 1. for cerebral insufficiency caused by insomnia and dreaminess, 2-3 days will be good after improving sleep. 2. for patients with cerebral vascular spasm, oral nimodipine and flunarizine will be good after 4-5 days. 3. for patients with atherosclerosis, medications to activate blood circulation and remove blood stasis need to be ordered quietly. 4. For patients of advanced age and chronic cerebral insufficiency, even with two weeks of medication, patients may have reduced clinical symptoms, and some patients have no effect at all. Therefore, cerebral insufficiency can be cured in a few days, depending on the condition, from person to person.