On this page · 9 sections
Adrenergic bronchodilators inhalation solution (20 mcg/2 mL)

Formoterol (inhalation)

Generic name: formoterol (inhalation)

Brand names: Perforomist, Foradil Aerolizer

Last updated November 2, 2026 0 views
Share

What is formoterol inhalation?

Formoterol (inhalation) is used to manage the symptoms of chronic obstructive pulmonary disease (COPD), which includes chronic bronchitis and emphysema.

Formoterol may also be used for reasons not mentioned in this medication guide.

This section was rewritten for readability and reviewed for meaning.

Warnings

Formoterol is for use only in people with chronic obstructive pulmonary disease (COPD) and should not be used to treat asthma.

Formoterol is not a rescue medicine. It will not work fast enough to treat a bronchospasm attack.

Seek medical attention if your breathing problems get worse quickly, or if you think your medications are not working as well.

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

You should not use formoterol if you are allergic to it. Formoterol is only for people with COPD and should not be used to treat asthma.

Tell your doctor if you have ever had:

  • heart disease, high blood pressure;
  • a seizure;
  • diabetes;
  • liver disease; or
  • a thyroid disorder.

Tell your doctor if you are pregnant or breastfeeding.

Formoterol inhalation is not approved for use by anyone younger than 18 years old.

This section was rewritten for readability and reviewed for meaning.

Formoterol inhalation side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Formoterol may cause serious side effects. Call your doctor right away if you have:

  • tremors, nervousness, chest pain, fast or pounding heartbeats;
  • wheezing, choking, or other breathing problems after using formoterol;
  • worsening breathing problems;
  • high blood sugar--increased thirst, increased urination, dry mouth, fruity breath odor; or
  • low potassium level--leg cramps, constipation, irregular heartbeats, fluttering in your chest, numbness or tingling, muscle weakness or limp feeling.

Common side effects of formoterol may include:

  • nausea, vomiting, diarrhea;
  • nervousness, trouble sleeping;
  • headache;
  • dizziness;
  • tremor;
  • tiredness;
  • muscle cramps; or
  • dry mouth.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

This section was rewritten for readability and reviewed for meaning.

How should I use formoterol inhalation?

Follow all directions on your prescription label and read all medication guides. Use the medicine exactly as directed. Using too much of formoterol can cause life-threatening side effects.

Formoterol is not a rescue medicine for bronchospasm attacks. Use only fast-acting inhalation medicine for an attack. Seek medical attention if your breathing problems get worse quickly, or if you think your medications are not working as well.

Formoterol solution for inhalation is for use only with a standard jet nebulizer machine connected to an air compressor. Do not mix formoterol with other medicines in the nebulizer.

Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you do not understand these instructions.

Store this medicine in the refrigerator, protected from light and heat.

Keep each vial in the foil pouch until you are ready to use the medicine. Once a vial is opened, you must use the medicine right away. Throw the empty vial away where children and pets cannot get to it.

You may store an unopened foil pouch at room temperature but you must use it within 3 months or throw it away.

Do not use formoterol if it does not look clear and colorless in the vial. Do not use after the expiration date on the label has passed.

You should not stop using formoterol suddenly. Stopping suddenly may make your condition worse.

What happens if I miss a dose?

Skip the missed dose and take your next dose at the usual time. Do not take two doses at once.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Seek emergency medical help or call the Poison Help line at 1-800-222-1222. Taking too much formoterol (inhalation) can be life-threatening.

Signs of an overdose may include chest pain, fast or uneven heartbeats, feeling anxious, shaking, muscle cramps, feeling dizzy, and fainting.

Do not use another inhaled bronchodilator that has formoterol or a similar medicine (such as arformoterol, indacaterol, olodaterol, salmeterol, or vilanterol).

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect formoterol inhalation?

If you also use a short-acting bronchodilator, do not use it every day while you are using formoterol. Use the short-acting bronchodilator only for a sudden bronchospasm attack.

Other drugs may affect formoterol, including prescription and over-the-counter medicines, vitamins, and herbal products. Inform your doctor about all your current medicines and any medicine you begin or stop using.

This section was rewritten for readability and reviewed for meaning.

Common questions about formoterol

Can asthma inhalers cause a sore throat?
Learn why asthma inhalers can cause a sore throat, which types are most likely, how to prevent it, and when to call your doctor for thrush or hoarseness. Continue reading

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
General medicine information Consumer-friendly language

Content is provided for education and is not medical advice. See our medical disclaimer.