Hos nogle patienter med bilateral nyrearteriestenose eller stenose af arterien til en solitær nyre er der set øgning i mængden af urinstof i blodet og forhøjelse af serumkreatinin ved behandling med ACE - hæmmere.
12  EMEA 2005 In some patients with bilateral renal artery stenosis or stenosis of the artery to a solitary kidney, who have been treated with ACE inhibitors, increases in blood urea and serum creatinine, usually reversible upon discontinuation of therapy, have been seen.