Active Ingredient

Valsartan

Valsartan is a medication commonly used to manage high blood pressure and certain heart conditions. It works by helping to relax blood vessels, making it easier for the heart to pump blood.

This medication is often prescribed to adults who need to control their blood pressure or improve heart function after a heart attack.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Valsartan Brands

Diovan

Strengths 40mg, 80mg, 160mg

Valsartan Uses

Valsartan is primarily used to address cardiovascular conditions. It is often prescribed for:

High blood pressure (hypertension)
Heart failure
Post-heart attack management
Reducing the risk of stroke

How Valsartan Works

Valsartan belongs to a class of drugs known as angiotensin II receptor blockers (ARBs). It works by blocking the action of a substance in the body that causes blood vessels to tighten.

By preventing this tightening, Valsartan helps blood vessels relax and widen, which lowers blood pressure and improves blood flow.

This mechanism also reduces the workload on the heart, which can be beneficial for patients with heart failure.

Common side effects of Valsartan

Not everyone experiences side effects with Valsartan, and many side effects are mild and temporary. Common side effects include:

Dizziness
Fatigue
Headache
Diarrhea
Back pain
Cold-like symptoms

If you experience any serious or persistent side effects, it is important to contact your doctor.

Monitor your blood pressure regularly to ensure the medication is working effectively.
Avoid consuming excessive amounts of alcohol while taking Valsartan.
Inform your doctor about any other medications or supplements you are taking to avoid interactions.
Do not use Valsartan if you experience symptoms like severe dizziness or swelling in the face or throat.

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

Frequently Asked Questions

What does Valsartan do?

Valsartan helps to lower blood pressure and improve heart function by relaxing blood vessels.

How long does it take for Valsartan to work?

Valsartan may start to lower blood pressure within a few hours, but it can take several weeks to see the full effect.

Can I take Valsartan with other medications?

You should inform your doctor about all medications you are taking to avoid potential interactions.

Is it safe to drink alcohol while taking Valsartan?

It is advisable to avoid excessive alcohol consumption as it can increase the risk of side effects.

What should I do if I miss a dose of Valsartan?

If you miss a dose, take it as soon as you remember unless it is almost time for your next dose. Do not double up doses.