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What is Dulera Inhaler (Mometasone/Formoterol) prescribed for?

This medication is used to control and prevent symptoms of asthma, such as wheezing and shortness of breath. It contains two medicines; Mometasone and Formoterol. Mometasone works by reducing the irritation and swelling of the airways. Whereas Formoterol works by opening the airways in the lungs to make breathing less of a chore.

This medication should be used when a breathing problem cannot be controlled with one asthma control medication or if your symptoms need a combination treatment.

Also, it is important to learn how to use this medication properly.  And it must be used regularly to be effective. However, it does not work right away and should be not be used to relieve any sudden asthma attacks that may occur. As you should have a quick-relief inhaler for that situation.

This medication comes in three different strengths, which are 50mcg/5mcg, 100mcg/5mcg, and 200mcg/5mcg. Also, keep in mind that this medication is known as Zenhale on an international level. Remember, your dose is based on your medical background and your overall response to the treatment. If your doctor or pharmacist has given you some information in the form of a pamphlet, take the time to read up on this drug, and if you have any questions or concerns regarding this medication, please consult your doctor.

Prime the inhaler if you are using it for the first time, or if you have used it in over 5 days.  There are also instructions that you may follow if you like.  Shake the inhaler well before each use. Remove the cap, than inhale the medication into the mouth. It is usually taken twice a day, once in the evening and once at night.

Rinse your mouth our with water after each use to help prevent dryness, irritation and yeast infections in your mouth and throat.  Do not swallow the rinse water.

If you are prescribed 2 puffs, make sure to wipe the outside of the mouthpiece once a week with a dry tissue. Do not use water or other liquids, and do not take the inhaler apart.


Before taking this medication, inform your doctor if you are allergic to mometasone or formoterol; or to arformoterol; or if you have any other allergies in general.

Before using this medication, tell your doctor or pharmacist your medical history. Especially if you have had any of the following; current/past infections (such as tuberculosis, herpes), high blood pressure, heart disease (such as chest pain, heart attack, irregular heartbeat), overactive thyroid (hyperthyroidism), seizures, bone loss (osteoporosis), eye problems (such as cataracts, glaucoma), diabetes, swelling of an artery (aneurysm), a certain tumor of the adrenal gland (pheochromocytoma).

Formoterol may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can rarely cause serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away.

The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may cause QT prolongation. Before using this product, tell your doctor or pharmacist of all the drugs you take and if you have any of the following conditions: certain heart problems (heart failure, slow heartbeat, QT prolongation in the EKG), family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death).

Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using this medication safely.

Side Effects

Common side effects of this medication do include the following; Stuffy nose, hoarseness, dry mouth, or throat irritation. It is best to speak with your doctor promptly if you are experiencing any of these side effects.

However there are some more serious side effects, and if you have been experiencing them you should speak with your doctor right away. They are as follows; white patches on tongue/in mouth, signs of infection (such as fever, persistent sore throat), mental/mood changes (such as nervousness), trouble sleeping, vision problems (such as blurred vision), increased thirst/urination, muscle cramps, shaking (tremors).

Get medical help right away if any of these rare but serious side effects occur: chest pain, fast/irregular heartbeat, severe dizziness, fainting, seizures.

A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.


What happens if I suddenly stop taking this medication?

There may be a relapse in symptoms as well as side effects. You should speak to your doctor before stopping taking this medication.


What is the best dosage to take?

The diagnosis with your doctor will be able to determine the best dosage for your treatment. Work with your doctor closely for dosage and dosing schedules.


What happens if I miss a dose?

You should take the missed dose as soon as you realize you have forgotten. If the forgotten dose is closer to your next scheduled dose, take the next scheduled dose to avoid overlapping in the dose.


What is the best way to store this medication?

This medication is stored at room temperature and should be kept away from children and pets. Do not throw away this medication in the wastebasket. If you are uncertain how to dispose of this medication, speak with your pharmacist for help in safely disposing of this medication.

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