Oh, regarding protein supplementation I use quite a lot and have been known to have over 300grams per day over long periods, though normally stick to around 250grams per day. My kidneys are fine and I have followed a high protein diet for over ten years now to aid me in recovering from strenuous exercise. I have also had urine tested before for general health purposes and I have recieved no feedback from any medical staff querying anything here. I wouldnt concern yourself with standard protein drinks AT ALL, nothing to be wary of there. : )
T&F