I recently started the HCG Diet. I have been on it for almost 3 weeks. Last week, I started feeling nausea and having a constant nagging headache. I have stopped other meds that I thought could be contributing to these symptoms. My last one to try is Wellbutrin. It has to be the culprit. I am going to talk with my doctor about dropping this med and see what happens. I will keep you posted. I lost weight the first few weeks, but this third week has been painfully slow. I appreciate your comments. I am glad to know I am not the only one who has had an issue like this.