I have been taking brand Abilify after taking generic for about a month. I am doing well again on brand Abilify. The fillers or inert ingredients in the generic probably caused me side effects. I could not tolerate these side effects. I take only brand Abilify and am not used to taking many medications. I was sleepy and my appetite increased a lot with generic Abilify. I could not stay awake and was eating like a horse. Thus, I stopped and went back to brand and am doing well. I was doing well on brand before and the pharmacist suggested I take generic. My doctor told me that he would put a note saying I can't take generic anymore on my prescriptions. Thus, the problems has been solved. However, the cost is higher with brand Abilify but is worth it to me. I have been taking brand Abilify for five years continually except for my stint with generic for a month.