I was first put on vyvanse 30mg and at the end of the day, I would crash so hard and keep hearing the same song repeat over and over, so tired but couldn't sleep, irritable, depressed, you name it. So I was switched to Adderall XR 15mg and it was even worse. My pdoc lowered my dosage to 10mg and it's better but not cured. I keep quitting taking them because of the crash and then take them again. Do I just need to get used to the drug or should I not take stimulants? That's what I'm trying to figure out. I would love some input.