I was adviced to take one pill of deanxit daily as preventive medicine for my migraine for a total period of 2 months. After 10 or more days taking it i started having sever dizziness that lasted 10 days and it was accompannied later by sever migraine and vomitting. i stopped taking the medicine after the 6th day of feeling dizzy. Could it be a side effect of the medication? and after i stopped it i am having sleepless nights is that a side a effect as well?