Nortriptyline
"I had a headache almost every day for over a year, and when I was at the neurologist for a concussion, the daily headaches were finally addressed, and I was put on a medication I was told was often tried before or after Nortriptyline. He said that if this one didn't work, it was likely that Nortryptaline would. I was soon prescribed Nortriptyline: 25mg at night for the first week and 50mg after that. Dry mouth was a side effect, but it went away shortly. When taking 25 of 50mg in the morning, I didn't notice it making me drowsy like I had been warned it would. Bad headaches occurred when stopping the drug for a few days. Subtle dry mouth would happen with the start again. Still taking it, haven't gone 40 days headache free quite yet."