migraine prevention
"I was put on 120 mg's and that worked for my migraines for about a week or two then they came back just like before. Some weeks were better than others but I always had at least one migraine a week. The Dr. upped my dose to 160 mg's and now I only get one migraine a month. It is a three day migraine related to PMS. I take Imitrex to get rid of these."