I had been been taking 20mg x day of generic/Sandoz Adderall for about 4 months and it had been working really well for me. 2 weeks ago when my pharmacy gave me my new prescription they noted it was from a new manufacturer called Northstar. I have been struggling ever since. Just feeling like I’m not getting any benefit from it at all. Similar to what others have mentioned as if it were a sugar pill. I found this forum this evening while googling trying to find out if there were differences between manufacturers. I guess I have found my answer. Wondering if anyone else had experience with Sandoz and/or Northstar?