Methylin: A Guide to Uses, Benefits, and Side EffectsMethylin contains the active ingredient methylphenidate, a central nervous system stimulant widely used to treat Attention Deficit Hyperactivity Disorder (ADHD) and narcolepsy. It is available in both immediate-release and extended-release formulations, offering flexibility in symptom management. Here's an overview of Methylin, its uses, benefits, and potential side …