Levocetrizine two times better affinity for H1 receptor compared to cetrizine Most potent, rapid onset and effective over 4 hours Its single dose shows better overall protection as compared with desloratadine in nasal provocation test with grass pollen allergen Other uses:- Seasonal & Perennial Allergic Rhinitis Allergic Dermatological Disorders
Montelukast reduces the bronchoconstriction, hence results in less inflammation Prevents bronchospasm during exercise Compared with placebo, Montelukast is more effective to improve quality of life at 4 weeks
Levocetirizine blocks the action of histamine, that causes allergic symptoms Exhibit 2-fold higher activity than that of cetirizine FDA approved to treat seasonal and Perennial Allergic Rhinitis
Other uses:- Seasonal and Perennial Allergc Rhinitis Exercise-induced Bronchoconstriction