Monast Description

Beige, rounded square-shaped, film-coated tablets debossed with 'I' on one side and "114" on the other side.
Each 10 mg film-coated Montelukast tablet contains 10.40 mg montelukast sodium, which is equivalent to 10 mg of montelukast.
Montelukast sodium, the active ingredient in Montelukast, is a selective and orally active leukotriene receptor antagonist that inhibits the cysteinyl leukotriene CysLT₁ 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 empirical formula is C₃₅H₃₅CINNaO₃S.
Montelukast sodium is a hygroscopic, optically active, white to off-white powder. Montelukast sodium is freely soluble in ethanol, methanol, and water and practically insoluble in acetonitrile.
Excipients/Inactive Ingredients: Microcrystalline cellulose, croscarmellose sodium, Mannitol, hydroxypropyl cellulose, magnesium stearate, lactose monohydrate and purified water. Opadry yellow 20A520007 (Hypromellose 6, Hydroxypropyl cellulose, Titanium dioxide, Carnauba wax, Iron oxide yellow & Iron oxide red).