I am not on any meds, but I know of one lady who hit menopause and got super curly ringlet hair when before she was poker straight. My mom is schitzophrenic, so I do know about Lithium. Believe it or not, lithium is derived from the lemon (I don't know if fruit or tree or leaves.) My herbalogist told me this. Being that lemon is acidic and acids are drying, then that could be where you are experiencing dry mouth, etc.
3b curls...strong highlighted brown/blonde hair/ wacky hair and crunchy to boot!

"Reader, suppose you were an idiot. And suppose you were a member of Congress. But I repeat myself." -
-- Mark Twain