Angiotensin II Receptor Blockers (ARBs) are drugs that are used to treat high blood pressure and heart failure. They are most often prescribed for people who experience side effects with ACE inhibitors. Rather than lowering levels of angiotensin II (as ACE inhibitors do), angiotensin II receptor blockers prevent this chemical from having any effects on the heart and blood vessels. The blood vessels are relaxed, which increases the supply of blood and oxygen to the heart muscle. The blood pressure is also reduced.
Angiotensin II Receptor Blockers are also known as Angiotensin-2 Receptor Antagonists). Some Angiotensin II Receptor Blockers that are available are: Losartan, Valsartan, Irbesartan, Candesartan, and Telmisartan.
Figure 1: Angiotensin II Receptor Blockers
Figure 2: Angiotensin is produced by the body.
Figure 3: Angiotensin causes blood vessels to contract.
Figure 4: Angiotensin II Receptor Blockers block angiotensin allowing the blood vessels to dilate.
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