Thanks for the discussion, it has been helpful to me. I'm taking Ambien CR to sleep because since I started taking Abilify I've been having great difficulty sleeping. After taking it for a week I became very sluggish in the mornings and then that negatively affected my mood. I saw the suggestion about only taking sleeping pills every other night to avoid withdrawal, which was also another of my concerns. taking Ambien everyother night has helped with the sluggishness. The drawback: I only get a good night's sleep every other night, but it's better than not sleeping at all. Thanks