Verma, Chander, Santosh Verma, Mahendra Singh Ashawat, and Vinay Pandit. “An Overview : Natural Bio-Enhancer’s in Formulation Development”. Journal of Drug Delivery and Therapeutics 9, no. 6 (November 15, 2019): 201-205. Accessed December 3, 2021. http://jddtonline.info/index.php/jddt/article/view/3682.