MONTELUKAST (Generic Singulair) is used for the prevention and long-term treatment of asthma. It is also used to treat hay fever (seasonal allergic rhinitis). Montelukast works by blocking substances in the body called leukotrienes. Blocking leukotrienes improves asthma and seasonal allergic rhinitis symptoms.

Salbutamol (Generic Ventolin) is a sympathomimetic (beta agonist) bronchodilator. It works by relaxing the smooth muscle in the airway, which allows air to flow in and out of the lungs more easily.