Active Ingredient

Nitroglycerin

Nitroglycerin is a medication used to manage certain heart conditions. It is commonly prescribed to help alleviate chest pain or angina.

By improving blood flow, it helps reduce the heart’s workload, making it an important part of heart disease management.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Nitroglycerin Brands

Strengths 0.5 mg, 2.5mg, 6.5mg

Nitroglycerin is typically used to treat or prevent episodes of chest pain associated with heart conditions.

Nitroglycerin works by relaxing and widening blood vessels, which helps to improve blood flow to the heart.

This action reduces the strain on the heart and decreases the oxygen demand of the heart muscle.

As a nitrate vasodilator, it helps in reducing the frequency and severity of angina attacks.

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

If you experience serious or persistent symptoms, contact your doctor.

Monitor for any unusual symptoms or side effects and report them to your doctor.
Avoid heavy alcohol consumption while taking this medication.
Do not use nitroglycerin if you experience a severe drop in blood pressure.
Be cautious when standing up quickly, as this medication can cause dizziness.
Inform your healthcare provider about all other medications you are taking to avoid interactions.

Always consult your doctor for personalized medical advice and guidance.

What is nitroglycerin used for?

Nitroglycerin is used to treat and prevent chest pain (angina) associated with heart conditions.

How quickly does nitroglycerin work?

Nitroglycerin works relatively quickly, often providing relief from chest pain within minutes.

Can I take nitroglycerin with other medications?

You should inform your doctor about all medications you are taking, as nitroglycerin can interact with certain drugs.

Are there any activities I should avoid while taking nitroglycerin?

Avoid activities that require alertness if you feel dizzy or lightheaded after taking nitroglycerin.

Is it safe to drink alcohol while using nitroglycerin?

It is advisable to limit alcohol intake, as it can increase the risk of side effects like dizziness and low blood pressure.