I have chronic migraines and I've taken Nortriptyline 50 mg. as a preventative for many years now. I recently found out that my two other medications, Atenolol for blood pressure and Duloxetine for anxiety/nerve pain, can also be used now to treat migraines. I was wondering if anyone else has been in a similar situation and what did you do. I haven't been able to see my new primary doctor yet, but I will ask them at that time what they think I should do.