liothyronine sodium make anyone sleepy?

So I started liothyronine sodium on Saturday morning. She started me out on 5 micrograms once a day, I didn't have any of the bad symptoms that I know can happen - anxiety etc., this morning it was easier to get out of bed and I felt pretty good until about 11am...then I started feeling sleepy...not sure if this means it is too low or maybe this isn't going to help... I believe the Dr said I would feel better quickly if the low T3 was the reason for my symptoms, I am hoping that this sleepiness isn't a bad sign...