Modafinil can increase the central excitability of the normal population. Sleep deprivation can cause people's alertness and ability to work down. Taking modafinil can effectively improve this condition. Studies have shown that after a night of sleep deprivation, taking 200 mg of modafinil, the psychomotor capacity of volunteers was significantly higher than that of the placebo group; during the 60-hour sleep deprivation, every 8 hours Dalfene 200 mg is still able to maintain the center of sleep deprivation in a state of excitement, so that they maintain considerable alertness and ability to work. Modafinil also has a certain neuroprotective effect. It has been found in animal models of brain injury that modafinil can effectively antagonize the production of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine. The neurotoxic effect makes the symptoms significantly relieved.