Angiotensin Receptor Blocker ARB

An angiotensin receptor blocker relaxes your blood vessels and allows your heart to pump easier. You would be prescribed this if you cannot take an ACE inhibitor.

Common angiotensin receptor blockers include:

  • losartan (Cozaar®)
  • valsartan (Diovan®)
  • candesartan (Atacand®)  

Side effects

When you start taking this medicine, you may have an increased chance of retaining potassium. Call your health care provider if you have any of the following symptoms:

  • confusion
  • irregular heartbeat
  • nervousness
  • numbness or tingling in your hands, feet or lips
  • weakness or a heavy feeling in your legs

When to call your health care provider

Call your health care provider if you have any of the following symptoms while taking an ARB:

  • dizziness/lightheadedness
  • fever
  • sore throat or hoarseness

Side effects that go away after using an ARB include:

  • headache
  • fatigue
  • nasal congestion
  • cough

Source: Allina Health's Patient Education Department, Heart Failure, fifth edition, 1-931876-31-2
First Published: 10/04/2002
Last Reviewed: 12/10/2015