Angiotensin receptor blockers (ARBs) are medications that are used to treat high blood pressure (hypertension) and heart failure. They work by blocking the action of angiotensin II, a hormone that constricts blood vessels and increases blood pressure. By blocking the action of angiotensin II, ARBs can help relax the blood vessels and lower blood pressure.

Some examples of ARBs include:

  • Losartan
  • Valsartan
  • Irbesartan
  • Candesartan

ARBs are usually taken once or twice a day, depending on the specific medication and the individual’s needs. The dosage is typically adjusted based on the patient’s blood pressure and other factors, such as age, kidney function, and any other medical conditions.

The cost of ARBs can vary depending on the specific medication and the dosage. In the United States, the average cost of a month’s supply of losartan (a common ARB) is around $15-$20. However, prices may be higher or lower depending on the pharmacy and the patient’s insurance coverage.

Like all medications, ARBs can cause side effects, although they are generally well tolerated. Common side effects of ARBs include:

  • Dizziness
  • Headache
  • Weakness
  • Back pain
  • Stomach pain

Less common side effects may include:

  • Rapid heartbeat
  • Rash
  • Chest pain
  • Swelling of the face, lips, tongue, or throat (which may be a sign of an allergic reaction)

It is important to report any side effects to a healthcare provider. In some cases, the dosage may need to be adjusted or the medication may need to be discontinued.

ARBs are generally contraindicated in people with a history of angioedema (a type of allergic reaction characterized by swelling of the face, lips, tongue, or throat) that is triggered by ACE inhibitors. They may also be contraindicated in people with severe kidney impairment or who are pregnant.

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