The kidney function has been damaged in some degree if you have Kidney disease, so as a patient with CKD you should keep to a light diet and do not take too much protein. Coconut Water is rich in protein,so you'd better not drink too much.

PKD refers to many various cysts in renal parenchyma of both kidneys.Then the various cysts will be larger with the time going on and constrict the kidneys.What's worse,the bigger cysts will rupture and damage the kidneys,effecting the renal function.PKD has 2 types:ARPKD(Autosomal recessive polycystic kidney disease) and ADPKD(Autosomal Dominant Polycystic Kidney Disease).