Medications that treat ADHD (attention-deficit hyperactivity disorder) work by affecting chemicals in the brain that contribute to hyperactivity and impulse control. There are two main classes: stimulants and non-stimulants. Stimulants like Adderall (mixed amphetamine salts) and Ritalin (methylphenidate) are usually taken as oral pills. Extended-release capsules, such as Concerta (methylphenidate) and Adderall XR, are also available. Non-stimulants, such as atomoxetine (Strattera) and guanfacine ER (Intuniv), are also taken orally. Some medications, like Daytrana (methylphenidate), come in patch form. These options provide different ways to help manage your ADHD symptoms effectively.