Modafinil works by increasing the amount of extracellular glutamate in the brain. Glutamate activates NMDA receptors, which are important for learning and memory. It also stimulates the activity of the histamine receptor, which is a key regulator of the fight-or-flight response. This mechanism could account for Modafinil's wake-promoting and neuroprotective effects.

you can also get an alternative pill Modalert 200 MG