"i was on adderall xr 20 mg for about 6 months, and then developed hives.  could&#039;ve been the bottle, could&#039;ve been a delayed reaction (sulfa allergies).  i don&#039;t know, but it was perfect until then. decreased appetite, yes, but that&#039;s not negative as far as i&#039;m concerned.  doc switched me to vyvanse xr, and i can tell you that while you will focus, it&#039;s not as focused as when on adderall (at least for me).  decreased appetite but nothing like with adderall.  i&#039;ve also been on evekeo (10 mg) tablet.  i&#039;ve only tried that once, and while it will definitely stimulate you (closer to adderall), i find there&#039;s really not hyper focus.  just a lot of movement and staying awake.  if you haven&#039;t tried it yet, i would go with adderall xr first."