Can overdosing on 30mg adderall (dextroamphetamine and racemic amphetamine) cause any adverse effects?

Unlikely and brief: Whether 30 mg of Adderall (dextroamphetamine and racemic amphetamine) is an "overdose" depends on the person's age, size, and tolerance to adderall (dextroamphetamine and racemic amphetamine). It is not at all uncommon as a daily dose for many people. In someone not taking stimulants and sensitive to them, it could cause a variety of bothersome but not dangerous side effects ranging from dry mouth, either sedation or agitation, and quite likely insomnia for a night.