My hair has changed texture over the 10 years I've been on amitriptyline, atenolol, clonazapam, and methadone. By texture change, I mean the hair is almost (pubic) like when it grows in. Not all my hair has changed like this, maybe 50% of the hair on my head, and all the hair on my arms. I know this sounds strange-or funny to some, but it is not funny when it happens to you--an NO One can tell me that they have ever seen or heard of this before--including my hair dresser.