Methylphenidate drug is disguised as Ritalin pills for public use. This medication is very much effective to cure ADHD symptoms. However, doctors may also prescribe Ritalin 20 mg pills (Methylphenidate) as an off-label treatment option for depression and Parkinson’s disease. The Methylphenidate drug is supplied as oral tablets, extended-release tablets and capsules, chewable tablets, extended-release chewable tablets, and extended-release orally disintegrating tablets.