Dr. Nitish Aggarwal, Dr. Rajat Kumar, Dr. Rajveer Singh. “Effect of Vitamin D Supplementation on Clinical Outcomes in Patients With Allergic Rhinitis”. International Journal of Pharmacy Research & Technology (IJPRT), vol. 16, no. 2, July 2026, pp. 34-44, https://ijprt.org/index.php/pub/article/view/2225.