Singular is a prescription allergy medication given to children and adults for the prevention of asthma attacks and treatment of sneezing and runny noses from allergens. It is a leukotriene inhibitor which means that it does not allow the body to release leukotrienes when it is exposed to an allergen. The chemical causes the lungs to swell and the muscles in the airway to tighten which can make breathing quite difficult.
While it can prevent recurrent asthma attacks it should not be used as a treatment for an oncoming attack. A fast-acting inhaler should be used for sudden onset attacks. Singulair is a long term treatment plan and can take several weeks to improve symptoms.
Singulair can cause mood or behavior problems so contact your doctor if any of these occur. While it should be safe to continue use while pregnant, always tell your doctor if you are pregnant, nursing, or plan to become pregnant before using this medication.