Cerebral infarction discharged from the hospital for a year to take butylphthalide effect is very limited, butylphthalide is mainly used for acute ischemic stroke patients with neurological deficits in the improvement of symptoms. Butanophthalein is mainly used in the acute phase of cerebral infarction adjuvant therapy, it can reduce cerebral edema, improve the microcirculation of the ischemic brain area, and then inhibit neuronal apoptosis by lowering the content of arachidonic acid, increasing the level of cerebrovascular endothelial nitric oxide and prostacyclin II, inhibiting the release of glutamate, lowering the intracellular calcium concentration, inhibiting free radicals and increasing the activity of antioxidant enzymes, and other mechanisms. Butanephthalein above pharmacological effects are in the acute phase of cerebral infarction to play a role in the effect, so cerebral infarction discharged from the hospital for a year and then take butanephthalein, has been infarction of the brain can not restore the function of the area, the effect is very limited. In addition, the use of butylphthalide is prohibited in patients who are allergic to butylphthalide, patients with severe bleeding tendencies. If you need to use this drug, do so under the supervision of a physician.