Modalet 200 mg contains modafinil, a prescription wakefulness-promoting agent used to treat excessive daytime sleepiness caused by narcolepsy, obstructive sleep apnea (OSA), and shift work sleep disorder. Modafinil is also marketed under the brand Provigil and is clinically recognized for improving alertness and cognitive performance.

Modalet 200 mg works by influencing neurotransmitters in the brain that regulate the sleep–wake cycle, helping individuals stay awake and focused without the intense stimulant effects associated with amphetamines. The typical dose is 200 mg once daily, taken in the morning or one hour before a work shift.

Common side effects may include headache, nausea, insomnia, and anxiety. Modalet should be used under medical supervision, especially in individuals with cardiovascular or psychiatric conditions, to ensure safe and effective treatment outcomes.