[{"arm_notes": "", "treatment_id": null, "treatment_name": "Intervention 1: Azelastine 0.1% nasal spray; five times per day; preferentially every 3 hours Intervention 2: Placebo nasal spray", "treatment_type": "TODO", "pharmacological_treatment": "TODO"}, {"arm_notes": "", "treatment_id": null, "treatment_name": "Azelastine 0.1% nasal spray; five times per day; preferentially every 3 hours", "treatment_type": "TODO", "pharmacological_treatment": "TODO"}, {"arm_notes": "", "treatment_id": null, "treatment_name": "Placebo nasal spray", "treatment_type": "Placebo", "pharmacological_treatment": "TODO"}]

[{"arm_notes": "nasal spray", "treatment_id": 164, "treatment_name": "Azelastine hydrochloride", "treatment_type": "Respiratory agents", "pharmacological_treatment": "Pharmacological treatment"}, {"arm_notes": "nasal spray", "treatment_id": 2187, "treatment_name": "Placebo", "treatment_type": "Placebo", "pharmacological_treatment": "Placebo"}]