Objective To determine the protection of carvacrol against cerebral ischemia/reperfusion(CI/R) injury in rats by lowing the content of NO. Methods The rats were subjected to CI/R by a thread for middle cerebral artery occlusion(MCAO). After 2 h of cerebral ischemia, the middle cerebral artery was reperfused for 24 h. The rats were randomly divided into 5 groups: a sham group, a model group, and a carvacrol low, middle and high dose group. The neurologic function scores and infarct zone were estimated. The c...