Your GFR is pertaining to your kidney function correct? A GFR
of 58 is on the lower side but not anything major right now...my GFR
is actually lower. You need to find out what is causing your GFR to drop,, certain meds are hard on the kidneys, including over the counter NSAIDS like Ibuprofen, Aspirin, Aleve, etc. Do not take any of these meds anymore, or take them rarely. Tylenol is ok as it is filtered through the liver.