woke up with serious vertigo. I could not stand or walk. This lasted for two days. I had no previous vertigo. I had no serious side effects until this. I had some swelling in face the first week. I still wake up with the vertigo. My blood pressure in high but not extremely high. 135 of 80. My pulse is good. A couple of days before the vertigo, my eye sockets ached. The first month of Harmoni was not bad.