<s>[INST] I am in stage 4 renal failure and the only symptom I have (had) was high blood pressure. The doctors say my kidneys are working at 20%. My blood pressure has been normal for 6 years now and the kidney s have gotten no worse. Should I drink water as if it s going out of style? Will that help??? [/INST] Good Day, and thank you for being with Chat Doctor ! The answer to your question would depend on if you have edema or getting edema. If you have edema then you should ask your doctor how much fluid your allowed to consume generally it should be less than 1L/24hours. If edema is not a problem for you then it is safe to consume 1.5-2liters per day. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://www.ChatDoctor .com/doctors/ Chat Doctor.  Best wishes. </s>