<prompt> Drug contra-Indicated in bilateral renal aery stenosisPropanololGuanethidineCaptoprilAmlodipine  <response>: ACE inhibitors are contraindicated in patients with renal aery stenosis as they can cause renal failure in them. Especially in bilaterl renal aery stenosis Unilateral renal aery stenosis- ACI in usage depends on clinical correlation All the other drugs are safe in renal aery stenosis. Ref: KD tripathi 8th ed. Page no 130 