I've used Adderall numerous times, some times I don't feel anything AT ALL. Other times I feel amazing, euphoric, however an addy buzz is usually described etc. This time I took 60 mg IR (the dose I usually take to feel right 60-90 mg IR or XR doesn't matter). It's now about 90 minutes later and alls I have is a racing heart and some jitters, no euphoria. How come I only get a good buzz and euphoria sometimes? Even with XR 60 mg I've felt nice a few times, but not everytime. I'd figure 60 IR would do the trick but nope..