Sahayam J., Sam Anbu, and Vasanthira K. 2021. “Efficacy of Intranasal Olopatidine Hydrochloride As an Add on Therapy in Mild to Moderate Allergic Rhinitis”. International Journal of Basic & Clinical Pharmacology 10 (4):415-19. https://doi.org/10.18203/2319-2003.ijbcp20211025.