Samuel, Aney, and Nida Mulla. “Formulation and Evaluation of Herbal Topical Gel Containing Leaves Extract of Andrographis Paniculata”. Journal of Drug Delivery and Therapeutics 10, no. 1 (January 15, 2020): 48-51. Accessed January 18, 2022. http://jddtonline.info/index.php/jddt/article/view/3837.