I used to have episodes of vertigo lasting a few weeks. Then I went to a chiropractor with my dish for vomiting in hand, it was so bad that I could not walk unassisted, and eyes closed because everything was spinning. We had rung him first and he thought he could help. And help he did. I walked out with the symptoms easing. I also took magnesium and three days later back to normal. Once I started to recognize my warning symptoms early and we would treat with magnesium and one visit to the chiropractor. I have not had a full blown attach for some years now and only need magnesium for very early symptoms.