If you suffer from ADHD, you should buy Adderall 30 mg online. one of the greatest ADHD medications. The drug Adderall 30 mg is used to treat attention deficit hyperactivity disorder and narcolepsy (ADHD). Adderall 30 mg contains a combination of amphetamine and dextroamphetamine. The central nervous system stimulants amphetamine and dextroamphetamine affect brain and nerve chemicals that promote impulse control and hyperactivity.