Nortriptyline
"Have had migraines for the past 20  years but they were usually around my time of the month.  Recently the migraines were daily and on a pain scale of 7 to 8 out of 10.  My GP prescribed Nortriptyline as a preventative treatment.  I've been on it for almost a month.  After a week of 10mg before bed, the migraines lessened from multiple times per day to every other day and the pain scale dropped down to 1 from 7 - 8.  I'm now 9 days migraine free.  No blurred vision but really bad dry mouth in the morning.  I'm hoping the dry mouth will eventually subside.  Not overly concerned.  The treatment plan is to titrate off the medication after 6 to 12 months.  In the meantime, it's nice to be migraine free."