Used to prevent wheezing, difficulty in breathing, chest tightness and coughing caused by asthma.

Also used to prevent bronchospasm( breathing difficulties) during exercise in adults and children 6 years of age and older.

Dosage

1. For Asthma (taken in the evening):

   • Adults and adolescents (15 years and older): 10 mg once daily
   • Children (6–14 years): 5 mg chewable tablet once daily
   • Children (2–5 years): 4 mg chewable tablet or 4 mg oral granules once daily
   • Children (6 months–2 years): 4 mg oral granules once daily (for certain indications like allergic rhinitis)

2. For Exercise-Induced Bronchoconstriction:

   • Adults and adolescents (15 years and older): 10 mg at least 2 hours before exercise (do not take an additional dose within 24 hours)
   • Children (6–14 years): 5 mg at least 2 hours before exercise

3. For Allergic Rhinitis (seasonal or perennial):

   • Same dosing as for asthma based on age

Warnings & Precautions:

• Neuropsychiatric Effects: Montelukast may cause mood changes, depression, agitation, or suicidal thoughts. Contact a healthcare provider immediately if these occur.
• Allergic Reactions: Rare cases of systemic eosinophilia and other allergic conditions have been reported.