yea I've done tons of bloodwork and other work and it all came back perfect, and this wasn't my first tattoo i have quite a few and never had any issue with any of them, and yea I've tried anti histamine new and old generation and the new ones don't really do anything and the old ones do help dry the mouth but by the time i take enough to feel any relief im so tired because of the side affect same with anticholinergics they help dry my mouth out a bit but by the time i feel any relief ive basically become blind as they affect vision as a side effect, and i have completely stopped chewing gum for the last 4 months, so im really clueless now as to whats causing it, but im still working with some doctors and it looks like the most probable solution is just going to be botox in the glands and hope for the best