I had taken Amitriptyline, and I didn't like the way it made me feel. I was sleepy all the time. I also didn't think it helped with the pain. I personally liked the topamax. You have to start off in low doses and then gradually increase it. It took about one and a half months for it to take effect. I was on the topamax and hydrocodone es. I am actually going to get back on it as soon as I am able.
All of these meds are trial and error. You will find the one that works best for you.