Active Ingredient

Candesartan

Candesartan is a medication used to help manage certain cardiovascular conditions. It belongs to a class of drugs known as angiotensin II receptor blockers (ARBs).

This medication is often prescribed to help control high blood pressure and may also be used to treat heart failure.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Candesartan Brands

Atacand

Strengths 4mg, 8mg, 16mg

Candesartan Uses

Candesartan is commonly used to treat conditions related to the heart and blood vessels.

High blood pressure (hypertension)
Heart failure
Reducing the risk of stroke in certain patients

How Candesartan Works

Candesartan works by blocking the action of a natural substance in the body called angiotensin II. This substance usually causes blood vessels to tighten.

By blocking angiotensin II, candesartan helps relax and widen blood vessels, making it easier for the heart to pump blood and reducing blood pressure.

This relaxation of blood vessels can also help improve blood flow and reduce the workload on the heart.

Common side effects of Candesartan

Not everyone experiences side effects with candesartan, and many side effects are mild and temporary.

Dizziness
Headache
Back pain
Cold or flu-like symptoms
Stomach upset
Fatigue
Low blood pressure

If you experience serious or persistent side effects, contact your doctor.

Monitor your blood pressure regularly to ensure the medication is working effectively.
Avoid consuming large amounts of alcohol, as it may increase the risk of side effects.
Inform your doctor about any other medications or supplements you are taking to avoid potential interactions.
Do not use candesartan if you experience severe dehydration or low blood pressure.
If you experience symptoms like swelling of the face, lips, or throat, seek medical attention immediately.

Always consult your doctor for personalized medical advice and before making any changes to your medication regimen.

Frequently Asked Questions

What is candesartan used for?

Candesartan is used to treat high blood pressure and heart failure, and it may also help reduce the risk of stroke in some patients.

How long does it take for candesartan to work?

The effects of candesartan on blood pressure can be noticed within a few weeks, but it may take longer for the full benefits to be seen.

Can I stop taking candesartan if I feel better?

Do not stop taking candesartan without consulting your doctor, even if you feel better, as this could worsen your condition.

Are there any foods or drinks I should avoid while taking candesartan?

It is advisable to limit alcohol intake and avoid high-potassium foods unless directed by your doctor.

Can candesartan interact with other medications?

Yes, candesartan can interact with other medications. Always inform your doctor about all the medicines you are taking to avoid potential interactions.