Amitriptyline
"Took drug for post concussion syndrome migraines. Did NOT work. Also had constipation and dry mouth, it elongated my periods from 6 days to 9.5 days, and at 20mgs, this drug immediately gave me a strong, persistent neck spasm that has not gone away months after withdrawal. This drug CAN INDUCE DYSTONIA and torticollis and I believe if I were on it longer, I might have developed those conditions. I think that people who already experience fasciculations or muscle spasms are more at risk of developing these conditions because the drug made my muscles twitch a LOT. I was on 10 mg for 5 days, than on the 6th day I took 20mgs, and that's when the spasms began. I was on the drug for maybe 6 weeks."