I've never taken the EvoMuse product so I can't speak to that. Tell me about how/when you dosed the products and with/without food. PR-XT will cause some hunger (I take it w food bc I feel hypoglycemic taking it solo) and may increase your thirst a bit. Some minor AI control from the brassaiopsis in the formula might cause some drying out, but as far as dry mouth? Just conjecture.