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05 Mar 2016 10:44 AM

Singulair is a medication produced and developed by Merck & Co, commonly used in conditions of asthma and nose hypersensitivity that is a result of allergy.

Singulair is a medication produced and developed by Merck & Co, commonly used in conditions of asthma and nose hypersensitivity that is a result of allergy. The drug is available in various forms: tablets, capsules, chewable tablets. Singular is a medicine of a new class (leukotriene blocker) which blocks substances involved in processes associated with various types of asthma. Singulair is the first drug of the type possible to be prescribed both for children and adults.

Singulair is commonly used to decrease the number of asthma attacks and to prevent breath worsening and wheezing caused by the disease and really helps to reduce the number of your asthma inhaler usages.

Clinical studies

Numerable researches participated by more than 3.000 of adults and children of 6 years old and above showed the efficiency and reliability of the drug. During the abovementioned clinical studies only 1% of patients had possible side effects. The drugs helped to increase the asthma control, decreased the number of daytime and night-time attacks and showed good treatment results in combination with other bronchodilators.

Singulair also allowed some patients to reduce the usage of corticosteroid inhalers, medications that are usually used in conditions of asthma to control bronchospasms. Inhaled steroids at high doses have great risk of causing potential side effects. Singulair doesn’t completely eliminate the necessity to use inhalers, thus don’t decrease dosages or stop using anti-asthma medication unless told by your prescriber.

Usefull facts

- The main active substance of singulair is montelukast sodium, antagonist of a leukotriene receptor.

- Leukotrienes cause the most number asthma and allergies symptoms, thus blocking them with the drug may help to control the disease.

- Singulair is available as chewable pills, hence is easy to take for kids who can’t swallow big pills, also it’s usually produced as oral granules which may be sprinkled.

- The drug is prescribed to children with asthma to take strictly in the evening, in conditions of allergies it should be used at the same time every day.

- It’s contraindicated to take more than one dose of singulair daily


Inform your physician if you are allergic to montelukast or have any other allergies. Some inactive components of the drug may cause some allergic reactions or hypersensitivity. It’s strictly contraindicated to use it without prescription.

People with phenylketonuria should use singulair with special care because chewable tablets may contain aspartame. It’s unknown whether montelukast passes to the breast milk, so contact the prescriber before breast-feeding or if you are pregnant.

It’s recommended to contact your doctor at once if you have any of the following undesired effects:

  • breathing difficulties

  • weakness in muscles

  • changes in behaviour or mood, thoughts about suicide

  • severe pain in chest or mouth, tongue swelling and irritation

The other side effect include:

  • headache or tooth pain

  • nausea and upset stomach

  • tired feeling

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