Singulair Modified-Release Granules is a pediatric medication containing 4mg montelukast sodium per sachet. Manufactured by MSD, this prescription medication comes in a pack of 28 sachets and is specifically formulated for children aged 6 months to 5 years. Each sachet contains montelukast sodium equivalent to 4mg montelukast and also includes mannitol (E421) as an inactive ingredient. The medication is designed to be taken orally once daily in the evening as directed by a physician. The granule formulation makes it easier to administer to young children. This is a prescription-only medicine that should be stored in its original package and kept out of reach of children.