I had the exact same experience when taking NCD for the first time. Constant thirst and urination. it goes like that for a while. the theory is that the way Waoira processes the zeolite makes it unique in the regard that it allows the clinoptillolite to enter into your bloodstream and then can be excreted via the urine instead of just in the gut. Some people even say they have a metallic smell on their skin when taking it. But I am not sure how you would measure skin mercury excretion. Go figure...