I'm new to this so bear with me. I was diagnosed with IBS in February '98 after having surgery to have my left ovary removed. I was put on Librax which helped some but, made me quite depressed at times. I'm trying to control my diet, but it's hard. My doctor just switched me to Levbid. But there are still undesirable side effects. Any advise on medications? I've heard a little about Amitriptyline. ????