migraine prevention
"I've had migraines since my teens and they become more frequent  as an adult. A doctor prescribed nortriptyline as a preventative in my mid 20s. It worked well for me. We did 10mg at night for a few months and stopped it worked well. When the migraines became more frequent a few years later we switched to continued use and 20mg a night. Migraines are now rare unless I am dealing with serious stress. Headaches in general have been reduced in number."