I can totally relate to this. I've been on letrozole since last May and experience saliva loss and also a "tinny" taste in my mouth.

Hi angel east, thanks for replying, Worried not knowing what to do! I am not alone . How are you coping with this? Its on my mind all day long & part of my sleepless nights, when having night sweats. I tried ice lolly, bitter lemon, menthol sweets.end up wasting  meals & snacking too much. Did you change Meds. Do I have to live like this? Replyis welcomed. Pip

I'm still on the same medication. Sometimes my mouth is so dry I can't swallow. I just drink loads of fluids and suck on boiled sweets etc,