Immediate-release (IR) Adderall begins working 20-30 minutes after ingestion, peaks in effect after 1-2 hours, and is generally taken 3-4 times per day.

Google

Adderall is available in two formulations: Immediate-release (IR), which begins working 20-30 minutes after ingestion, peaks in effect after 1-2 hours, and is generally taken 3-4 times per day; and Extended-release (XR), which begins working about one hour after ingestion and is usually taken once or twice per day.

Learn Before

Related