My son and I suffer from really bad headaches. If we don't take medication right away, it leads to vomiting. This salve has been fantastic! As long as we use it right away when we feel the headache coming on. In fact, my son came home from school today and got the vomit bag and went straight to his room. I rubbed this stuff all over his forehead and temples and he is now sleeping soundly and didn't have to use the vomit bag.