modafinil molecule. it is stimulant, wakefulness promoting agent. structural chemical formula on the dark blue background

adhd adrafinil agent amphetamine apnea appetite armodafinil atom atomic blue carbon chemical chemistry cognitive dark dopamine doping drawing drug enhancement enhancer fatigue flat formula hydrogen hypersomnia icon illustration medicine modafinil modafinile molecular molecule narcolepsy narcotic organic oxygen promoting skeletal sleep sleepiness stimulant structural structure vector wake wakefulness white