I have had some kind of cold/flu, sinusitis (all in one) for about three weeks. Finally I went to the doctor she prescribes antibiotics, anticough medicine etc. I also developed somehow a muscle spams around my neck aparently due to excesive coughing. The pain became the worst ever to the point of tears. The doctor prescribed skelaxin 800mg, it didn't help, then I added 400mg Advil.. The pain somehow got better, but still there. So Went for Motrin 800mg with Skelaxin, didn't help.