I started taking Celexa about a month ago on a 10mg dosage which I take each morning around the same time. At first, it greatly helped with my insomnia, however I did have more frequent headaches (but im also on atorvastatin so that might contribute to it as well). I seemed to be doing better day by day, yet still lack an appetite and will have a rough day every so often. However, in the last week I have had three panic attacks. Before going on the medication, I had had two, both brought on by traumatic events. However, these last three were random and one even in the middle of class as I was taking notes. Has this happened to anyone else?