Dr. N.Thamaraiselvan Natarajan, K.Priya verthini Kanagarathinam. “A Study on Factors Influencing Purchase of OTC Analgesic Drugs”. International Journal of Advanced Science and Technology 29, no. 7 (June 1, 2020): 10275-10296. Accessed September 30, 2026. http://sersc.org/journals/index.php/IJAST/article/view/27209.