The dose of Singulair that a person is prescribed will depend on the condition being treated. For example, when treating nasal allergies, the dose can range from 4 mg to 10 mg. Other factors that affect a person's dosage include age and if other medical conditions are present.
The dose of Singulair® (montelukast sodium) that your healthcare provider recommends will vary, depending on a number of factors, including:
- Your age
- Other medical conditions you may have
- Other medications you may be taking.
As is always the case, do not adjust your dosage unless your healthcare provider specifically tells you to do so.
The recommended Singulair dose for treating asthma in adults and adolescents age 15 and older is 10 mg a day. For children ages 6 to 14 years old, the recommended dose is 5 mg, taken once daily. For young children ages 2 to 5 years old, the recommended dosage is Singulair 4 mg (either as a chewable tablet or packet of oral granules), taken once daily. For children age 12 to 23 months old, the recommended dose is one packet of Singulair oral granules (4 mg), taken once daily.
When treating asthma, it is generally best to take Singulair in the evening to prevent nighttime asthma symptoms.
To prevent exercise-induced asthma, the recommended dose for adults and adolescents age 15 and older is Singulair 10 mg, taken two hours before exercise. The recommended dose for children 6 to 14 years of age is 5 mg, taken two hours before exercise. The medication should not be taken more frequently than every 24 hours, and should not be taken before exercise if you are already taking it once a day for asthma.