> I have been taking Zeolite (NCD) for the last 3 weeks and last night I
developed a stinging
> tongue and very dry mouth.

Zeolite is known to cause dehydration in people, so that could explain
the dry mouth. I don't know about the stinging tongue -- I know from
personal experience that one can have all sorts of bizarre reactions
when attempting to detox (and if they get too troubling, then I
usually just stop whatever I'm doing)

Marc