Adderall 20mg is a prescription stimulant medication used to treat Attention Deficit Hyperactivity Disorder (ADHD) and narcolepsy. It contains a combination of amphetamine and dextroamphetamine, which work by increasing dopamine and norepinephrine levels in the brain, enhancing focus, attention, and impulse control. The 20mg dose is considered a moderate strength and may be prescribed when lower doses are not sufficient. Common side effects include insomnia, loss of appetite, dry mouth, and increased heart rate. Adderall 20mg is a Schedule II controlled substance due to its high potential for abuse and dependence. It should be taken only as prescribed by a healthcare provider.