What is the half life of Adderall XR?
Also another thing to think about….if the half life of a drug is longer than about 12 hours, and you take that drug every day, it builds up in your sytem and will take longer to get out of your system. Because if you take it and is hasn’t reached it’s half life in your body your just adding to the build up of that drug in your system, therefore increasing the half life.
