Active Ingredient

Formoterol

Formoterol is a long-acting medication used to help manage breathing difficulties. It is commonly prescribed for conditions that affect the airways, such as asthma and chronic obstructive pulmonary disease (COPD).

This medication works by helping to relax the muscles in the airways, making it easier to breathe.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Formoterol Uses

Formoterol is typically used to improve breathing in various respiratory conditions. It helps prevent and control symptoms such as wheezing and shortness of breath.

Asthma maintenance treatment
Chronic obstructive pulmonary disease (COPD) management
Prevention of exercise-induced bronchospasm

How Formoterol Works

Formoterol works by stimulating beta-2 adrenergic receptors in the lungs. This action relaxes the muscles around the airways, leading to dilation of the bronchial tubes.

As a result, it helps to improve airflow and makes breathing easier for individuals with obstructive lung conditions.

Its effects are long-lasting, providing relief over an extended period.

Common side effects of Formoterol

Not everyone using Formoterol will experience side effects, and many side effects are mild and temporary. However, some individuals may notice certain symptoms.

Headache
Nervousness
Tremor
Dry mouth
Muscle cramps
Throat irritation

If you experience severe or persistent symptoms, contact your healthcare provider.

Frequently Asked Questions

How fast does Formoterol work?

Formoterol typically starts working within a few minutes, providing relief from breathing difficulties.

How long does the effect of Formoterol last?

The effects of Formoterol can last up to 12 hours, making it suitable for long-term management of breathing problems.

Is Formoterol safe for long-term use?

Formoterol is generally considered safe for long-term use when prescribed by a doctor. Regular monitoring is important.

Can Formoterol interact with other medications?

Yes, Formoterol can interact with other medications. It’s important to inform your healthcare provider about all medicines you are taking.

Can I use Formoterol during an asthma attack?

No, Formoterol is not meant for immediate relief during an asthma attack. Use a rescue inhaler for sudden symptoms.