I have been on the generic form of Cytomel for almost two weeks now. I still feel rather lethargic, and I've been requiring naps. I'm trying to see if this medication is what is causing this. My husband has also noticed that I have been, what he calls, "A lot bitchier." I do see that about myself. I feel a lot more irritable than usual. It's not good for me, because it causes stress on my mind and body. It's definitely not good for my family as they've been taking the brunt of it. I'm trying to wait this week out to see if my body is going to ever function the way it did with brand. I just have a feeling in a few days, I will be emailing my doctor to put me back on brand to function at least somewhat normal!