Montelukast:
• Antagonizes the proinfalmmatory & proasthmatic activies
• Can be used as first line therapy for AR, with comprehensive improvement of the nasal & ocular symptoms & the quality of life in AR patients.

Levocetirizine:
• Is a 2nd generation non sedative antihistaminic agent that has been demonstrated to be safe & effective for treating allergic disease
• Does not bind significantly to the brain H1Rs & does not induce significant sedation

Indication:
• Asthma
• Perennial Allergic rhinitis (PAR)
• Seasonal Flu
• Seasonal Allergic rhinitis (SAR)
• Respiratory tract allergies
• Allergic rhinitis
• Nasal & respiratory allergies
• Cough and cold
• Chronic obstructive pulmonary disease (COPD)