Yes I have had to before when I was on Geodon. That tired feeling will eventually go away and you wont be able to tell you even took it. I was on 80mg. It may just take you a month or two to adjust. Geodon was a life saver for me and had no weight gain but I did have some weight loss on it. Im not sure if it was the Geodon or the Prestiq causing the weight loss though. It could have even just been nerves at that time I was going through a lot of persoal issues. Good luck with the Geodon I hope it works for you as well as it did for me.