What are the serious side effects of quinapril?

Angioedema, which is a swelling of an area under the skin or within organs, is a rare but serious effect of quinapril and other ACE inhibitors. If the angioedema is happening within your intestines, you may feel severe abdominal pain; if it is happening in your throat or around your airway, you may have difficulty breathing. A blood cell disorder called agranulocytosis, in which you have few or no white blood cells, can also happen as a side effect of quinapril. Your kidneys could be affected, which would lead to elevated levels of substances in your blood called creatinine and urea nitrogen. In some cases, your kidneys could stop working--a condition called acute renal failure. This is more likely if you have certain other medical conditions, such as heart failure or kidney disease.

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