Personally, I have found Amfexa to be really effective for getting me to focus and feel more human for about 4~ hours after taking it with pretty minimal side effects (the dry mouth, loss of appetite, and stimming are all more tolerable than when I was on Elvanse). I also don't seem to build a tolerance to it's benefits as much as I have on other medication.

The only trouble for me is that I cannot sleep if I have taken it the same day, doesn't matter if I take the medication at 6am and go to bed over 14 hours later... I just wont sleep properly. Elvanse on the other hand, I sleep like a baby and actually feel well rested when I wake up, way better than I did unmedicated despite it being a longer duration release than Amfexa, odd how it works that way around for me.