It is available by prescription only and comes in different forms and strengths, including:
- Singulair 4 mg chewable tablets
- Singulair 5 mg chewable tablets
- Singulair 10 mg tablets
- Singulair oral granule packets (containing 4 mg per packet).
The recommended dosage for adults and adolescents ages 15 and older is Singulair 10 mg once a day. For children 6 to 14 years old, the recommended dose is 5 mg once daily. The recommended dose for young children ages 2 to 5 is Singulair 4 mg daily (either as a chewable tablet or packet of oral granules). For children 6 to 23 months old, the recommended dose is one packet of Singulair oral granules (4 mg), taken once daily.