Singulair paediatric chewable tablets and Singulair paediatric granules contain the active ingredient montelukast, which is a type of medicine known as a leukotriene receptor antagonist. It works by blocking the action of leukotrienes, which are chemicals released by the body as part of allergic and inflammatory reactions.
Leukotrienes have effects in many areas of the body. In the lungs, they cause inflammation and increased mucous production in the airways. They also cause the muscles lining the airways to contract, which narrows the airways. All of this makes it difficult for air to get in and out of the lungs.
Montelukast blocks leukotriene receptors in the lungs and, as a result, blocks the actions of the leukotrienes. This prevents the excess mucous production, inflammation and narrowing of the airways and so prevents asthma attacks. It is also useful for preventing asthma triggered by exercise.
Montelukast is used for people whose asthma is not fully controlled by using regular inhaled corticosteroids and short-acting beta agonist relievers such as salbutamol. It is used in addition to these medicines.
Montelukast may also be used as an alternative to low-dose inhaled corticosteroids for children aged 2-14 years who have mild persistant asthma but are not capable of using inhaled corticosteroids. In this case, montelukast is only suitable if the child has not recently had serious asthma attacks that needed treatment with corticosteroid tablets. (Mild persistent asthma is defined as asthma symptoms more than once a week but less than once a day, nighttime symptoms more than twice a month but less than once a week and normal lung function between episodes. If montelukast doesn't control the asthma within a month then additional or different medicines will be needed.)
Montelukast should be taken regularly to prevent asthma attacks. It should be continued even when the symptoms are under control.
Singulair paediatric 5mg chewable tablets are suitable for children aged 6 to 14 years. Singulair paediatric 4mg chewable tablets are suitable for children aged 2 to 5 years. Singulair paediatric granules are suitable for children aged 6 months to 5 years. The dose should be taken once daily, in the evening.
This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.
Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.
Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.
The side effects listed above may not include all of the side effects reported by the drug's manufacturer.For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.
It is important to tell your doctor or pharmacist what medicines your child is already taking, including those bought without a prescription and herbal medicines, before they start treatment with this medicine. Similarly, check with your doctor or pharmacist before giving any new medicines in combination with this one, to ensure that the combination is safe.
No significant interactions have so far been reported with montelukast.
However, the manufacturer recommends that the following are used with caution in combination with this medicine, as they may decrease the blood level of montelukast:
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