<s>[INST] I am a 41 year old male,weighing 250lbs. and I have a serum creatinine level of 1.6 & my BUN is 24.  Renal ulra sound showed, mild scarring on the outside surface of the left kidney.  I have had high blood pressure in the past, but have taken Tolprol XL, for the past 8-10 years, and my dose was increased to 100mg., for the past 5years. My blood pressure remains controlled.  Should I drink lots of water, and is drinking gatorade recommended?Thanks for any advice you can give! [/INST] Hi, You have borderline chronic kidney disease, and as such should be getting your BUN and Creatinine checked on a regular basis, and follow the treating nephrologists advice. As of now, it does not appear that there is any reason why you should restrict water, and indeed 3 liters per day of oral fluids might even be healthy unless you have swelling of feet or any facial puffiness. However, you would be well advised to restrict salt in your diet, and also unless you really require, avoid sports Chat Doctor.  </s>