"i was on zenzedi for about 6 months. i loved it! i have only tried ritalin for my add and it made me psychotic, and once i stopped taking it i was too scared to take anything else. well 10 years later, and sick of my add, i was prescribed this medication and it worked! i also had no beginning side effects.  the only complaint i have is how quickly it wore off, but it could be my own metabolism and anyone else could be different. however, due to my new insurance i am switching to adderall xr, i&#039;ll write an comparison opinion when i begin taking it."