So I've been taking prozac (fluoxetine) 10 mg for just over two months. From about 4 weeks in I've been getting quite bad flu type feelings - muscle aches, swimming head and weakness. Also I have been sleeping more and just generally feeling like I've got the flu (even though I'm sure I haven't). Further flu like symptoms were sneezing and feeling a constant mucus drip down the back of my throat, and every now and then a sore throat. These feelings aren't constant, and even got better for a couple of days before resurfacing in much the same manner. I even rested on the days I felt better, as is the sensible thing to do when coming out of a crash. But this rest was to no avail. Some days I have to lie down all day and hardly have energy to move, whereas others I have a couple of hours or so where I feel a little more normal, before the fluiness returns. Before starting the fluoxetine, I was doing a lot better physically, and the symptoms I am now experiencing are new to me in many ways. I have had flu type feelings before, but never for such an extended period as this, nor quite as severe. My previous crashes presented in different symptoms to those that are currently hanging about. So to sum things up, do any of you have similar side effects from taking antidepressants? Or other medications? It seems like my immune system is playing up in some way and maybe I’m clutching at straws trying to blame the medication rather than the illness.