Indications 

Singulair, or Montelukast, is a medication utilized to manage and prevent asthma symptoms, such as wheezing and shortness of breath. It can be taken before exercise to avoid breathing issues during training, known as bronchospasm. This medication may reduce the frequency of using quick-relief inhalers. 

Montelukast can alleviate symptoms related to hay fever and allergic rhinitis, including sneezing and a stuffy, runny, itchy nose. However, since other allergy medications may be safer, this medication should be used for this condition only when other allergy medications are not viable or ineffective, as advised in the Warning section.  

Montelukast must be used regularly to be effective and should not be used to relieve sudden asthma attacks or breathing issues. In case of an asthma attack or sudden shortness of breath, follow the prescribed guidelines for your quick-relief inhaler. This medication blocks specific natural substances, leukotrienes, that may worsen asthma and allergies. It eases breathing by diminishing inflammation and swelling in the airways. 

Uses and Dosage 

Before administering the Singulair tablet, read the Instructions for use carefully to ensure the oral granules are prepared and given accurately. 

Most individuals take montelukast daily during the evening to prevent allergy or asthma symptoms. However, if physical activity exacerbates your asthma, your physician may advise taking montelukast 2 hours before exercising. Please note that only one montelukast dose should be taken daily and stay within this limit. 

Side Effects 

Common Side Effects 

• Diarrhea 
• High temperature 
• Headaches 
• Stomach ache, feeling or being sick (nausea or vomiting) 
• A mild rash 
• Talk to a pharmacist or doctor if these side effects bother you or do not go away. 

Serious Side Effects 

Contact a doctor immediately if: 

• You notice mood changes, and you become depressed, aggressive, or you’re thinking of harming yourself 
• You see things that are not there (hallucinations) 
• You’re finding it more complicated than usual to concentrate or remember things 
• Your speech changes, or you start stuttering 
• You have shaking or trembling in any part of your body 
• You have an unusual or fast heartbeat 
• You get yellow skin, or the whites of your eyes become yellow – this could be a sign of liver problems. 

Cautions 

Before initiating montelukast therapy, please disclose any known allergies to the medication or other allergens to the treating physician or pharmacist. This formulation may contain inactive constituents that can trigger allergic reactions or other adverse effects. Therefore, this drug is recommended to seek further advice from the pharmacist. 

Complete disclosure of medical history, particularly concerning liver disease and mental or mood-related disorders such as anxiety, depression, or suicidal ideation, is essential before commencing this medication. 

In preparation for any surgical procedures, you must inform your treating physician or dentist about all medications, including prescription and non-prescription drugs, as well as herbal supplements you currently use. 

Patients with phenylketonuria or other dietary conditions requiring them to limit or avoid the intake of aspartame (or phenylalanine) should be aware that chewable montelukast tablets contain aspartame. Therefore, consulting with a physician or pharmacist before using this medication is recommended to ensure safe usage. 

During pregnancy, evaluate the risks and benefits of montelukast administration, and the use of this drug should only be considered when needed. A thorough discussion with the treating physician is recommended before initiating therapy.