Modalert 200 mg is a medication that is often prescribed to treat narcolepsy and sleep apnea. It is a brand name for the drug Modafinil, which is a wakefulness-promoting agent. Modalert 200 Australia improves alertness, focus, and concentration in individuals suffering from excessive daytime sleepiness caused by these sleep disorders.

Narcolepsy is a neurological disorder that affects the brain's ability to control sleep-wake cycles, leading to uncontrollable daytime sleepiness, sudden sleep attacks, and other symptoms. Sleep apnea, on the other hand, is a condition where a person experiences pauses in breathing or shallow breathing during sleep, leading to disrupted sleep and daytime tiredness.