Modalit 200 mg is a modafinil-based prescription medicine associated with wakefulness promotion. This PDF provides an easy-to-understand medical overview covering its applications for narcolepsy, obstructive sleep apnea, and shift-work disorder. It also discusses administration, possible side effects, medicine interactions, and safety precautions. Individual treatment decisions should be made with a healthcare professional who can consider medical history, current medicines, and other relevant health factors.