Buy Generic Provigil 200 mg, a prescription central nervous system (CNS) stimulant used to improve wakefulness in adults experiencing excessive sleepiness due to conditions such as narcolepsy, obstructive sleep apnea (OSA), or shift work disorder. It contains modafinil, which works by altering natural neurotransmitters in the brain to help regulate the sleep-wake cycle. Because this medication carries a risk of habit formation and psychological dependence, it should strictly be taken under the guidance of a healthcare professional and never shared with others. Stopping treatment abruptly may be difficult if a dependence has formed, so your prescriber should advise you on the proper dosage, duration, and safe discontinuation of the medication.