I was on Abilify 2mg for about a month, didn't see any difference. The one thing that it did do pretty severely is that it made me super, super exhausted all the time. I was constantly falling asleep in class, and took naps every day-- sometimes twice a day. So while it did help me sleep more, it made me sleep way too much. But it didn't help with my dissociation or depression or PTSD in general (I also took it with 50mg of sertraline) so I was just taken off it. As for weight gain: I lost three pounds, then gained three pounds back when I started Abilify. Hope that helps xx