In 2026, Provigil 200mg remains the definitive clinical standard for the management of excessive sleepiness. This specific dosage is strategically designed to align with the body’s metabolic rate, offering a 12-to-15-hour half-life that ensures a full day of "clean" wakefulness without the jagged physical crash associated with older stimulants. By precisely modulating neurotransmitters like orexin and dopamine, the 200mg tablet stabilizes the brain's "stay awake" switch, making it the most frequently prescribed strength for narcolepsy, obstructive sleep apnea, and shift work sleep disorder.