Methods A randomized, double-blind, multicenter, controlled trial of complex prescription cromolyn sodium and lovocabastine nasal spray was performed in the treatment of allergic rhinitis.

• 方法采用与已上市的同类有效药物立复汀鼻喷剂作为阳性对照，进行多中心、随机、双盲、平行对照的临床研究。