Der er dog, ligesom for andre stoffer, der virker på renin- angiotensin- systemet, en øget risiko for nyreinsufficiens, inklusive nyresvigt, når patienter med nyrearteriestenose behandles med aliskiren.
However, as with other agents acting on the renin-angiotensin system, there is an increased risk of renal insufficiency, including renal failure, when patients with renal artery stenosis are treated with aliskiren.