Modalert 200mg Australia is effective for treating insomnia related to PLMD. Patients with PLMD may experience frequent and uncontrollable limb movements during sleep. They may also experience daytime sleepiness and difficulty initiating sleep. Modalert 200 is a generic drug containing 200mg of the active ingredient modafinil. It is manufactured by Sun Pharma, the world's fifth-largest generic drugmaker. This medication is used to treat various sleep-wake disorders, including sleep apnea and narcolepsy. It also helps patients wake up more quickly and reduce the tendency to snooze during the day. Although it does have side effects, these are minimal and usually resolve within a few days.