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Last Updated April 2020
Leukotriene Modifiers: Used to treat allergy symptoms and to prevent asthma symptoms.
Generic Name
Brand Name
Use
Usual Dosage
Product Links (if available)
Montelukast
Singulair
10 mg Tablet
5 mg Chewable Tablet
4mg Chewable Tablet
4 mg Oral Granules [not pictured]
To prevent and treat asthma age 2 and above.
To prevent exercise-induced asthma 6 y/o and above at 5 mg and 15 y/o and above at 10 mg
Also for relief of symptoms of allergic rhinitis age 6 months of age and older.
Age 2 to 5: One 4 mg tablet once a day.
Patients 12 to 23 months: One packet of 4-mg oral granules daily.
Age 6 to 14: One 5 mg tablet once a day.
Age 15 and older: One 10 mg tablet once a day.
To prevent exercise-induced asthma take 2 hours before activity.
Singulair Package Insert
Zafirlukast
Accolate 10 or 20 mg Tablets
To prevent and treat asthma ages 5 and above.
Age 5 to 11: One 10 mg tablet twice a day.
Age 12 and older: One 20 mg tablet twice a day.
Zileuton
Zyflo CR Tablets 600 mg
To prevent and treat asthma ages 12 and older.
Age 12 and older: Two 600 mg tablets twice daily within 1 hour of meals.
Zyflo CR PDF
Find out more about asthma.