thank you for responding so quickly! I feel as though my dad does not drink enough-he has no desire to drink anything and i told him he should at least drink the 14oz of water daily thinking that this would help with the toxin level removal mark going from 2.4 to a 1.34 over the last couple of times it was tested...it is comforting to know you have helped others who live without any kidneys,,,he feels so inadequent at times...produces no urine and noone here in richmond va has ever had both kidneys removed...he developed heart failure in june with function rate of 29%...any things you can think of to help us is greatly apprecitated! He is only 61 and has endured so much in the past two yrs...