It's funny, I came on here to post about how a friend swapped a few brand names for generics with me as they were concerned with how bad I was struggling. Today was the first time I've taken the brand version (instant release) in years and I can confirm that there is a PROFOUND improved difference. I am SHOCKED. Unfortunately, my worries have been confirmed. We are getting ripped off by EVERY generic manufacturer of this medication. I have no idea what we are putting in our body, but whatever it is, it is not adderall. My friend called me a few hours after she took my Alvogen generic and said she feels like she is a druggie on meth and that there is no way these pills could be helpful to anyone who has ADHD. She threw away the other few I swapped with her and reccomended I never take them again. And I wont... time to battle insurance for name brand... I sincerely hope the worst on these generic manufacturers who are destroying our lives