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How Allergy Medicines Work

Only one allergy medicine works a different way.

If indoor and outdoor allergies are bothering your child, it may be time to try a different way to help relieve your child’s symptoms. Talk to your child’s doctor about SINGULAIR. Fill out your Child’s Allergy Profile and discuss it with your child’s doctor.

People who have indoor and outdoor allergies are sensitive to pollen and mold spores.

Tiny grains of pollen and mold blow around in the air outside. Pollen comes from grasses, weeds, and trees. Outdoor mold spores come mostly from fallen leaves and rotting wood.

Breathing in pollen or outdoor mold spores triggers the body to make chemicals that cause allergy symptoms.

Histamine and leukotrienes (loo-ko-TRY-eens) are 2 of the chemicals that the body makes. These and other chemicals cause symptoms such as stuffy, itchy, runny nose; and sneezing. Many allergy medicines block chemicals in the body that cause allergy symptoms.

Not all allergy medicines are the same:

  • Some are medicines that have to be sprayed into the nose, which some people may not prefer
  • Some work only on specific symptoms, like a stuffy nose
  • Some allergy medicines can make you drowsy
  • Most work by blocking histamine

SINGULAIR® (montelukast sodium) is a prescription medicine approved to help control asthma in adults and children as young as 12 months and to help relieve the symptoms of indoor and outdoor allergies (outdoor allergies in adults and children as young as 2 years, and indoor allergies in adults and children as young as 6 months).

IMPORTANT SAFETY INFORMATION

SINGULAIR should be taken once a day, as prescribed. SINGULAIR is available by prescription only.

Side effects are generally mild and vary by age, and may include headache, ear infection, sore throat, and upper respiratory infection. Side effects generally did not stop patients from taking SINGULAIR. SINGULAIR should not be taken by people who are sensitive to any of its ingredients.

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.

For additional safety information, please see Patient Product Information.

This site is intended only for residents of the United States, its territories, and Puerto Rico.
SINGULAIR and MerckServices are registered trademarks of Merck & Co., Inc. MerckSource is a trademark of Merck & Co., Inc.
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