“Formulation, Development & Evaluation of Matrix Type Transdermal Patch of Xanthine Oxidase Inhibitor (Allopurinol)”. International Journal of Food and Nutritional Sciences 11, no. 11 (January 1, 2022): 4152–4167. Accessed August 24, 2026. http://www.ijfans.org/index.php/Journal/article/view/12059.