If it is ever seemingly stronger (bitter/sour/pungent) than a ‘water with faint metallic taste’, the primary reason would probably be due to metabolic changes, such as acidic saliva, which is most likely due to changes in diet or from dietary choices, both of which indicate a change in the pH of your saliva. Secondary issues could be leaching of metals from dental amalgams. However, leaching usually only occurs when the saliva is acidic, thus pointing back to a dietary change. You can easily find lists of alkaline foods on the internet. Organoleptic (taste & odor) tests are part of our batch release parameters. Our product is manufactured the same exact way with the same exact components, each and every time, and we have never released a “bad” batch.
