I have taken Abilify since January of 2004. I started off at 15mg and have never had a problem.
I was on Risperdal for about 7 years. I got started on it when it was a brand new medicine in 1995. Then about 2 years ago, I started to develop Tardive Disconitia (I thinik it's spelled that way). For anyone who doesn't know what that is, I started to develop body ticks and facial ticks.
They got me off of the Risperdal and put me on Zyprexa. I was on that for about 1 1/2 years. I gained about 50 pounds from that.
Then in January, my current doctor switched me from Zyprexa to Abilify, so I would lose the weight. I've lost about 40 pounds of what i gained since then. I haven't ever had a problem with Abilify.
BTW I'm diagnosed Scitzo-Affective. I'm taking Abilify, Tegretol, Lorazapam, and Zoloft. I haven't been as stable as I am right now in years. I'm 24.