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Adderall 20mg is a prescription medication used to treat Attention Deficit Hyperactivity Disorder (ADHD) and narcolepsy. It contains a combination of amphetamine and dextroamphetamine, which are central nervous system stimulants. These ingredients help improve focus, attention span, and impulse control by increasing dopamine and norepinephrine activity in the brain. The 20mg dose is considered a moderate-to-high starting point and may be adjusted based on individual response. Common side effects include insomnia, decreased appetite, nervousness, and increased heart rate. As a Schedule II controlled substance, Adderall 20mg should be used exactly as prescribed to prevent dependence or misuse.