Several months ago, I developed a second case of shingles. It took several days for my dentist to identify my problem. I thought I had an issue with a tooth that needed a root canal. She could not get the tooth to present in a way that would isolate my symptoms so she sent me to an endodontist. After hearing my symptoms, he told me that I was having some type of muscle/skeletal issue because the symptoms I was describing never are the result of teeth. I went back to my dentist with this information and she pulled up my symptoms on the computer. As I was reading the symptoms, it dawned on me that it was shingles.......presenting in my jaw. What a nightmare. I couldn't eat or drink for days. She put me on this muscle relaxer, valtrex and steroids. This muscle relaxer made all the difference in the world. It caused my symptoms to calm down long enough for me to at least drink water. I can only say that this medicine helped me so very much. I am appeciative not only of this medicine but my very compassionate dentist. She cared enough to get to the root of the problem instead of sending me to many different specialists.