Adult Dosing. Dosage forms: TAB: 5 mg, mg, 10 mg, mg, 15 mg, 20 mg, 30 mg. Special Note [formulation clarification] Info: Adderall may be switched to Adderall XR at equivalent total daily dose; . Adderall vs. Ritalin Differences in Side Effects and Dosage.
Doctors will usually start an Adderall dosage at the smallest amount that may potentially work and then gradually increase it. For ADHD, the immediate-release dosage for adults is between 5 mg to 40 mg a day. .