ARBs: What They Are and How They Help Your Blood Pressure

ARBs (Angiotensin II Receptor Blockers) are a group of pills that keep your heart and blood vessels from tightening too much. They work by stopping a hormone called angiotensin II from sticking to its receptors, which would otherwise make the blood vessels narrow and raise blood pressure. By blocking that signal, ARBs let your vessels stay relaxed, so the heart doesn’t have to pump as hard.

Common ARB Names You’ll See at the Pharmacy

When you look at a prescription label, you’ll most likely recognize a few of these names:

• Losartan (Cozaar)
• Valsartan (Diovan)
• Irbesartan (Avapro)
• Candesartan (Atacand)
• Olmesartan (Benicar)

All of them belong to the same family, but they differ a bit in how long they stay in your body and how strong they are. Your doctor picks one based on your health record, how well you tolerated other meds, and whether you have kidney issues or diabetes.

Why Doctors Choose ARBs Over Other Blood Pressure Drugs

Most people have heard of ACE inhibitors, another class that controls the same hormone pathway. ARBs are often the backup when ACE inhibitors cause a bothersome cough or swelling. They’re also gentle on the kidneys, which is a big plus for patients with chronic kidney disease. Many studies show ARBs lower the risk of stroke and protect the heart after a heart attack, making them a solid choice for long‑term heart health.

Typical dosing starts low – often 50 mg of losartan or 80 mg of valsartan – and your doctor will adjust it based on blood‑pressure readings. You usually take an ARB once a day, with or without food. If you miss a dose, just take it as soon as you remember unless it’s almost time for the next one; then skip the missed dose and continue as normal.

Side effects are usually mild. The most common complaints are dizziness, especially when you first start the drug, and a slight increase in potassium levels. Very rare reactions include severe allergic responses or kidney problems, so regular blood‑test check‑ups are important the first few months.

Bottom line: ARBs are a safe, effective way to keep blood pressure in check without the nagging cough that some other meds cause. Talk to your doctor if you’ve been prescribed an ARB – ask about the best dose for you, any food or drug interactions, and when to schedule follow‑up labs. Staying informed helps you get the most out of your treatment and protects your heart for the long run.