bacterial infection
"Had a swollen foot.  Dr. prescribed Cephalexin, 500 mg 3 times a day.  I quit the 4th. day as my excreted urine  was less than 2 Tablespoons per trip to bathroom.  I had decreased kidney function prior to taking Cephalexin and the prescribing doctor should pay more attention to my records.
In my case it can cause kidney failure.  My BUN Blood Urea Nitrogen was elevated BEFORE taking the Cephalexin.  I had stepped on a piece of glass and nothing major.  From now on I will research any prescription that doctors give me.  Very, very disappointed in being prescribed this!"