What You Should Know Before Taking Nasonex

Man using nasal spray
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Nasonex (mometasone furoate monohydrate) is a nasal spray used for the treatment of allergy symptoms such as runny nose, sneezing, congestion, nasal polyps, and itchy nose. Nasonex is in a class of medication called corticosteroids.

Who Can Take Nasonex?

Most healthy individuals over the age of two can safely use Nasonex. This medication is available over the counter but you should talk to a doctor before using it, especially for children or on a long term basis. Tell your doctor if you are pregnant or nursing.

Nasonex can cause or worsen certain eye conditions such as cataracts or glaucoma and should be used with caution in patients who have a history of these conditions.

Nasonex should not be taken by anyone who has had a previous allergic reaction to mometasone furoate. Nasonex should not be used if you have nasal ulcers, have had recent nasal surgery, or nasal trauma. Nasonex may exacerbate certain viral and bacterial infections.

Side Effects

According to the manufacturer the following side effects occurred during clinical studies: headaches, viral infections, pharyngitis (inflammation of the pharynx or throat), nosebleeds, bloody mucous, upper respiratory tract infections, coughing, sore muscles, painful menstruation, and sinusitis.

Less common side effects include suppression of the immune system, thrush (a fungal infection of the mouth and throat), growth disturbances, taste disturbances, nasal septal perforation, nasal burning and irritation, and slow wound healing.

All medications are capable of producing a life-threatening allergic reaction called anaphylaxis. Symptoms of anapylaxis include difficulty breathing, difficulty swallowing or drooling, swelling of the tongue, lips, or face, blue lips or skin (cyanosis), wheezing, rash or hives. Symptoms usually develop rapidly within a short time of using a new medication. If you have any of these symptoms call 911 or go to the nearest emergency room.

Rebound congestion or addiction is a common side effect of nasal sprays. However, the manufacturer of Nasonex claims that this is not a side effect of Nasonex.

How to Take Nasonex

Nasonex is a nasal spray and should not be used orally or in any other manner. Nasonex works best when it is taken regularly. A typical adult dose of Nasonex is two sprays in each nostril one time daily. Children under 12 years old typically need one spray in each nostril daily. If you miss a dose take it as soon as you remember. Use Nasonex only as often as your doctor has told you. Detailed information on how to use the nasal spray is in the packet insert that comes with the medication.

Before Taking

Your doctor needs to know all the medications you are taking before you start using Nasonex to avoid negative interactions. Tell your doctor if you are pregnant or nursing. Nasonex is a pregnancy category C (meaning that animal studies have shown the medication causes an adverse effect on the fetus and there are no human studies available). It is not known if Nasonex is secreted in breast milk. Tell your doctor if you have impaired liver or kidney function, if you are taking corticosteroid medications, or if you have an impaired immune system before taking Nasonex.

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Article Sources

  • Medscape. Nasonex (mometasone, intranasal).

  • Nasonex.com. Prescribing Information.