Cinfalair 4mg is a prescription medication containing montelukast sodium in chewable tablet form. Each pack contains 28 chewable tablets specifically formulated for pediatric use in managing asthma and allergy symptoms. The active ingredient montelukast sodium belongs to a class of medications called leukotriene receptor antagonists. The chewable tablet formulation is designed to make it easier for children to take. This medication should only be used under medical supervision and according to prescribed dosage. The 28-tablet pack typically provides a one-month supply when taken as directed.