Hi there. Sorry you're going through this, dizziness is awful! I am not an expert so I can't give medical advice. However, from what I've seen, dizziness is a common side effect of nortriptyline. It may get better as you adjust to the medication, but regardless, you should definitely let your doctor know this is going on so that they can make any changes if needed. I hope you feel better soon and that it does end up helping for your migraines! -Melissa, team member