A psychiatrist may prescribe Modvigil 200 to help manage conditions involving excessive sleepiness or impaired alertness. Common reasons include narcolepsy, shift work sleep disorder, or residual daytime sleepiness linked to sleep apnea. It may also be used off-label to support attention, motivation, or cognitive fatigue in conditions such as depression, ADHD, or medication-related sedation, especially when standard treatments cause drowsiness. Modvigil helps promote wakefulness without the strong stimulant effects of amphetamines. Psychiatrists choose it when improved focus, energy, and daytime functioning are important for a patient’s overall mental health and daily performance.