The duration of dilated pupils can vary depending on several factors, including the dosage of Adderall taken, individual metabolism, and sensitivity to the medication. In most cases, dilated pupils caused by Adderall are temporary and should return to their normal size once the medication's effects wear off. Typically, this can take anywhere from a few hours to a day or more. If you notice prolonged dilation or experience any other concerning symptoms, it's best to consult your healthcare provider for a proper evaluation.