..SORRY cant see a year date on these... I took over 120 vancomycin for c diff 2018 have not felt right since, together with other illnesses,tinnitus, glaucoma etc., and I too wonder if affected my kidneys as I have been referred to a nephrologist. She has had many tests,blood, ultrsoun, done and i see her next week.... she said maybe from radiation 39 years ago or my age 77 but like yu am wondering if VANCOMYCIN causes the problems.......hope to ask her if I remember and she has time...so busy during Covid lockdowns etc.