https://www.vetsurgeon.org/f/clinical-questions/31338/choline-deficiency-and-tartaric-acid-toxicity Another gap in my education needing plugged! So, I read this week that calcium tartrate tetrahydrate uroliths are possibly on the increase (from exceptionally rare to very rare). I read that choline tartrate added to "fresh" dog foods could be aen-USTelligent Community 10