Learn about NASONEX

Used once a day, every day, as directed by your health care provider, prescription NASONEX Nasal Spray is clinically proven to help treat indoor (or “year-round”) and outdoor (or “seasonal”) nasal allergy symptoms.


Important Safety Information about NASONEX

  • NASONEX may cause slow wound healing. Do not use NASONEX until your nose is healed if you have a sore in your nose, if you have surgery on your nose or if your nose has been injured.

>More Safety Information


NASONEX is non-habit-forming, scent-free and alcohol-free. It is non-drowsy and won’t keep you awake. You can use it daily, any time of the year you suffer, for as long as your health care provider prescribes.

How to Use NASONEX


NASONEX is clinically proven to help relieve nasal allergy symptoms including congestion, sneezing, itchy nose or runny nose. It is most effective when used regularly, as your health care provider recommends.


Here are some tips that can help make sure you’re getting the most from your treatment.

  • To be effective, NASONEX (mometasone furoate monohydrate) must be used regularly. Use it around the same time each day (every 24 hours).
  • Do not skip days, even if your nasal allergy symptoms are under control.
  • If you miss a dose, use it as soon as you remember. Do not take more than the daily dose prescribed by your doctor.
  • Keep using NASONEX even if you still have nasal allergy symptoms within the first 2 weeks. The maximum benefit is usually achieved in 1 to 2 weeks.
  • If you are using another medication that is also given by nasal inhalation, ask your health care provider which medication you should use first, and how long you should wait between the medications.
  • Before you use NASONEX for the first time, you need to prime the pump. Shake well and remove the cap. Hold the bottle in the air, and release the pump 10 times or until a fine spray appears. If you have not used the NASONEX bottle for more than 1 week, reprime the pump by spraying it 2 times or until a fine spray appears.
  • Contact your health care provider if your symptoms do not improve after you start using NASONEX (mometasone furoate monohydrate), or if you think you may be experiencing a side effect.

Be sure to follow the instructions on the correct way to spray NASONEX.


Important Safety Information about NASONEX

  • Some people may have eye problems, including glaucoma and cataracts. You should have regular eye exams.

>More Safety Information


The Right Way to Spray


Before you use NASONEX for the first time, shake well and remove the cap. Then pump the bottle 10 times or until a fine spray appears. Do not spray NASONEX in your eyes. Then, each time you use NASONEX, follow these 4 steps:


Step 1

Get ready.

Each time you use NASONEX, shake well and remove the cap. Blow your nose then use your finger to close off one of your nostrils. Remember: if you haven't used NASONEX for more than a week, before using, reprime by pumping the bottle 2 times or until a fine spray appears.

Step 2

Insert the bottle tip.

Tilt your head forward slightly and insert the tip of the bottle upright. It is important that you don't spray directly onto the wall between your two nostrils.

Step 3

Pump the NASONEX bottle.

With your thumb supporting the bottom of the bottle, press down on the white applicator with two fingers. Breathe in through your nose and out through your mouth. Repeat this step for each spray prescribed by your health care provider. It is important to keep the NASONEX unit in an upright position, as failure to do so may result in an incomplete or nonexistent spray.

Step 4

Switch nostrils and repeat the steps.

Repeat these steps with your other nostril. Then clean the tip with a tissue, replace the cap, and store at room temperature away from light.


Important Safety Information about NASONEX

  • NASONEX may cause immune system problems that can increase your risk of getting infections. Avoid contact with people who have infections like chickenpox or measles while using NASONEX. Tell your doctor about any signs of infection, such as fever, pain, aches, chills, feeling tired, nausea, and vomiting while using NASONEX.

>More Safety Information


How do you know when to get a refill?


Your NASONEX bottle should be discarded after 120 sprays (usually about 30 days of regular use), even though the bottle is not completely empty.

Note to Parents: If NASONEX has been prescribed for your child, please help them with each of these steps.

Important Safety Information about NASONEX (mometasone furoate monohydrate)

  • A condition in which the adrenal glands do not make enough steroid hormones may occur. Symptoms can include tiredness, weakness, nausea, vomiting, and low blood pressure.
  • The most common side effects include headache, viral infection, sore throat, nosebleeds, and coughing.
  • Nosebleeds and infections of the nose and throat may occur.

Please read the Patient Information for NASONEX and discuss it with your health care provider. The physician Prescribing Information also is available.

Having trouble paying for your Merck medicine? Merck may be able to help. For more information please visit www.merck.com/merckhelps.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1.800.FDA.1088.


This site is only for residents of the United States, its territories, and Puerto Rico.

RESP-1060299-0002 07/14


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Merck Sharp & Dohme Corp.,

a subsidiary of Merck & Co., Inc.

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