Co-trimoxazole in chronic renal failure--a controlled experiment in Wistar rats.

Co-trimoxazole failed to cause a deterioration in renal function, as measured by pre- and posttreatment plasma urea levels, in groups of Wistar rats with either normal renal function or surgically induced chronic renal failure. In addition tubular necrosis was not produced. Co-trimoxazole does not appear to be extremely toxic to the Wistar rat kidney.