Montelukastdrug info
montelukast 10 MG Oral Tablet
What it is used for
Montelukast sodium is a leukotriene receptor antagonist indicated for:
Prophylaxis and chronic treatment of asthma in patients 2 years of age and older.
Acute prevention of exercise-induced bronchoconstriction (EIB) in patients 6 years of age and older.
Relief of symptoms of allergic rhinitis (AR): seasonal allergic rhinitis (SAR) in patients 2 years of age and older, and perennial allergic rhinitis (PAR) in patients 2 years of age and older. Reserve use for patients who have an inadequate response or intolerance to alternative therapies. Limitations of Use:
Not indicated to treat an acute asthma attack. 1.1 Asthma Montelukast sodium is indicated for the prophylaxis and chronic treatment of asthma in adults and pediatric patients 2 years of age and older.
1.2 Exercise-Induced
Bronchoconstriction (EIB) Montelukast sodium is indicated for prevention of exercise-induced bronchoconstriction (EIB) in patients 6 years of age and older.
1.3 Allergic
Rhinitis Montelukast sodium is indicated for the relief of symptoms of seasonal allergic rhinitis in patients 2 years of age and older and perennial allergic rhinitis in patients 2 years of age and older. Because the benefits of montelukast sodium may not outweigh the risk of neuropsychiatric symptoms in patients with allergic rhinitis, reserve use for patients who have an inadequate response or intolerance to alternative therapies.
1.4 Limitations of
Use Montelukast Sodium is not indicated for the treatment of an acute asthma attack..
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective July 28, 2026. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
Description
Montelukast sodium USP, the active ingredient in montelukast sodium tablets USP and montelukast sodium chewable tablets USP, is a selective and orally active leukotriene receptor antagonist that inhibits the cysteinyl leukotriene CysLT 1 receptor. Montelukast sodium is described chemically as [R-(E)]-1-[[[1-[3-[2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl] cyclopropaneacetic acid, monosodium salt. The molecular formula is C 35 H 35 ClNNaO 3 S, and its molecular weight is 608.18.
The structural formula is: Montelukast sodium is a hygroscopic, optically active, white to off-white powder. Montelukast sodium is freely soluble in water and in methylene chloride, freely soluble to very soluble in ethanol (96%). Each 10-mg film coated montelukast sodium tablet contains 10.4 mg of montelukast sodium, which is equivalent to 10 mg of montelukast, and the following inactive ingredients: croscarmellose sodium, hydroxypropyl cellulose, lactose monohydrate, magnesium stearate, mannitol, and microcrystalline cellulose. The film coating consists of: carnauba wax, ferric oxide red, ferric oxide yellow, hydroxypropyl cellulose, hydroxypropyl methylcellulose, and titanium dioxide. Each 4-mg and 5-mg montelukast sodium chewable tablet contains 4.2 and 5.2 mg montelukast sodium, respectively, which are equivalent to 4 and 5 mg of montelukast, respectively. Both chewable tablets contain the following inactive ingredients: aspartame, cherry flavor, croscarmellose sodium, ferric oxide yellow, hydroxypropyl cellulose, magnesium stearate, mannitol, and microcrystalline cellulose. Structure
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective July 28, 2026. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
This page reproduces regulatory text for reference. It is not medical advice, and KenyRx is not a pharmacy or a prescriber. Talk to a doctor or pharmacist about whether a medicine is right for you.
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