Sentence: A Randomized , Multicenter , Double-blind , Phase III Study to Evaluate the Efficacy on Allergic Rhinitis and Safety of a Combination Therapy of Montelukast and Levocetirizine in Patients With Asthma and Allergic Rhinitis .
Drug combination annotation:
[{'class': 'POS', 'spans': ['Montelukast', 'Levocetirizine'], 'is_context_needed': True}]