Irbesartan

Irbesartan is a medication used to treat high blood pressure (hypertension) and protect kidney function in people with diabetes. It works by relaxing blood vessels, improving blood flow, and reducing strain on the heart. If you’ve been prescribed irbesartan, here’s what you need to know.

What is irbesartan?

Irbesartan is an angiotensin II receptor blocker (ARB) that lowers blood pressure and helps prevent complications related to high blood pressure and kidney disease.

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How does irbesartan work?

Irbesartan blocks the effects of angiotensin II, a hormone that narrows blood vessels. This helps relax and widen the blood vessels, reducing blood pressure and improving circulation.

What is irbesartan used to treat?

Irbesartan is commonly prescribed for:

  • High blood pressure (hypertension)
  • Diabetic kidney disease (nephropathy) (to protect kidney function in people with type 2 diabetes)
  • Reducing the risk of stroke and heart complications

Who can take irbesartan?

Irbesartan is suitable for most adults, as prescribed by a doctor.

Who might not be able to take irbesartan?

Irbesartan may not be suitable if you:

  • Have severe kidney or liver disease
  • Have low blood pressure (hypotension)
  • Are pregnant or planning to conceive
  • Are taking other medications that affect blood pressure or potassium levels

Can I take irbesartan if I’m pregnant or breastfeeding?

Irbesartan isn’t recommended during pregnancy or breastfeeding, as it may harm the baby. Speak to your doctor about safer alternatives.

What if I miss a dose?

If you forget a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed one—do not take two doses at once.

How effective is irbesartan?

Irbesartan is highly effective at lowering blood pressure and protecting kidney function when taken consistently.

What should I do if I take too much?

Taking too much irbesartan can cause dangerously low blood pressure, dizziness, or fainting. If you think you’ve taken too much, seek emergency medical help immediately.

What dose of irbesartan is usually taken?

  • For high blood pressure: 150mg to 300mg once daily
  • For diabetic kidney disease: 300mg once daily

Your doctor will determine the correct dose based on your condition.

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What are the side effects of irbesartan?

Common side effects include:

  • Dizziness or lightheadedness
  • Fatigue
  • Increased potassium levels (which may cause muscle weakness or irregular heartbeat)
  • Nausea

Serious side effects, such as severe dizziness, kidney problems, or allergic reactions, require urgent medical attention.

How should I take irbesartan?

Irbesartan is taken as tablets, usually once daily, with or without food.

When should irbesartan be taken?

Irbesartan should be taken at the same time each day, as prescribed by your doctor.

What are the brand names for irbesartan?

Irbesartan is available as a generic medicine, but some branded versions include:

  • Aprovel
  • Karvea

Final thoughts

Irbesartan is an effective medication for high blood pressure and kidney protection, but it should be taken exactly as prescribed. Regular monitoring of blood pressure and kidney function may be needed. If side effects occur, speak to your doctor or pharmacist.

Always consult a medical professional
This article is for informational purposes only and is not a substitute for medical advice. Always consult a healthcare professional before starting, stopping or changing any medication. If you have concerns about your medication or experience side effects, speak to your doctor or pharmacist immediately.

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