Increases Alertness Modafinil 200 mg Australia is an FDA-approved medicine used to treat narcolepsy, obstructive sleep apnea, and shift work sleep disorder. It is also used as a cognitive enhancer by healthy people who want to improve their focus and wakefulness. It works by stimulating the central nervous system and increasing hypothalamic histamine levels, which help you stay awake throughout the day. The drug also increases the amount of neurotransmitters that control alertness and focu...