Vyvanse is like Adderall mixed with an antidepressant. It's time released so you don't just "drop off" like Adderall will do. The antidepressant side it was makes you feel like that when you don't take them. It builds up in your system so even when you don't take it you can feel like you are still on it. The can't calm down side of vyvanse is just like your on Adderall. I hope this helps with some of the things that go on when you do and don't take them.