I actually feel pretty stupid because I realised it's actually an evening med. Got it confused somehow, and yes I was feeling bouts of tiredness that day. I only took 7.5 mg yesterday morning, but will continue doing so tonight. The reason I hesitate to call my doctor is because I've learned doctors don't know anything, and he'll just suggest not to do it, but I was feeling better on aripiprazole, despite feeling extremely tired about two months into treatment.