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An ARB drug is an Angiotensin II Receptor Blocker.
What it does
ARBs block the action of angiotensin II, a hormone that:
Narrows blood vessels
Raises blood pressure
Increases fluid retention
By blocking this hormone, ARBs:
Relax blood vessels
Lower blood pressure
Reduce strain on the heart and kidneys
Common uses
ARBs are commonly prescribed for:
High blood pressure (hypertension)
Heart failure
Chronic kidney disease, especially in people with diabetes
Post–heart attack care (in some patients)
Examples of ARB drugs
Losartan
Valsartan
Candesartan
Irbesartan
Telmisartan
Olmesartan
ARBs vs ACE inhibitors
Both affect the same hormone system (RAAS)
ARBs are often used when ACE inhibitors cause chronic cough
ARBs are less likely to cause cough or angioedema
Common side effects
Dizziness or lightheadedness
High potassium levels
Low blood pressure (especially when starting)
If you want, I can explain how ARBs differ from other blood pressure medications or help identify why a specific ARB was prescribed.
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