Methylphenidate is a medication that is used to treat attention-deficit hyperactivity disorder (ADHD). There are different types of methylphenidate, including methylphenidate HCl (brand name Ritalin) and methylphenidate CD (brand name Concerta).

Methylphenidate HCl is a short-acting medication, and methylphenidate CD is a long-acting medication. Both medications are effective in treating ADHD, but they work in different ways.

Methylphenidate HCl is a stimulant medication. It works by increasing the amount of dopamine in the brain. Dopamine is a neurotransmitter that helps to control the brain’s reward and pleasure centers.

Methylphenidate CD is also a stimulant medication. It works by increasing the …