Active Ingredient

Telmisartan

Telmisartan is a medication used to manage certain cardiovascular conditions. It is commonly prescribed to help control high blood pressure and reduce the risk of cardiovascular events.

By managing blood pressure, Telmisartan can help prevent complications such as strokes and heart attacks.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Telmisartan Brands

Micardis

Strengths 20mg, 40mg

Sartel

Strengths 40mg

Telmisartan Uses

Telmisartan is typically used in the management of cardiovascular conditions. It helps in:

Controlling high blood pressure (hypertension)
Reducing the risk of stroke in patients with high blood pressure and other risk factors
Managing heart failure
Protecting kidney function in people with type 2 diabetes and hypertension

How Telmisartan Works

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

By blocking its action, Telmisartan helps relax and widen the blood vessels, which lowers blood pressure and improves blood flow.

This mechanism helps reduce the workload on the heart and supports overall cardiovascular health.

Common side effects of Telmisartan

Not everyone experiences side effects from Telmisartan, and many side effects are mild and temporary. Common side effects include:

Dizziness
Fatigue
Headache
Stomach upset
Back pain
Sinus congestion

If you experience 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 large amounts of alcohol while taking Telmisartan, as it may increase certain side effects.
Inform your doctor about all other medications you are taking to avoid potential interactions.
Do not use Telmisartan if you experience severe allergic reactions to it in the past.
Stay hydrated, especially during exercise or hot weather, to help maintain healthy blood pressure levels.

Always consult your doctor for guidance tailored to your personal health needs.

Frequently Asked Questions

What does Telmisartan do to the body?

Telmisartan relaxes blood vessels by blocking the action of angiotensin II, which helps lower blood pressure and improve blood flow.

How long does it take for Telmisartan to work?

The effects of Telmisartan on blood pressure may be noticeable within a few hours, but it may take several weeks to achieve the full benefit.

Can I take Telmisartan with other medications?

It’s important to discuss all medications you are taking with your doctor, as Telmisartan can interact with certain other drugs.

Is it safe to drink alcohol while taking Telmisartan?

While moderate alcohol consumption may be acceptable, it’s best to limit alcohol intake as it can increase the risk of side effects.

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

If you miss a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed dose and resume your regular schedule. Do not double up doses.