azelastine, an H1-selective antihistamine that also inhibits leukotriene and platelet activating factor (PAF) synthesis and release. ▪ INDICATIONS: This drug is used to treat seasonal allergic rhinitis and seasonal allergic conjunctivitis. ▪ CONTRAINDICATIONS: Known hypersensitivity, acute asthma attacks, and lower respiratory tract disease prohibit this drug’s use. ▪ ADVERSE EFFECTS: Side effects include sedation (more common with increased doses), increased drowsiness, weight increase, and myalgia.