20210206215700.0 http://www.pharmacognosyjournals.com/ International journal of pharmacognosy and pharmaceutical research (Online) International journal of pharmacognosy and pharmaceutical research. International journal of pharmacognosy and pharmaceutical research (Online) 2664-7176 Bangladesh 2664-7176 International journal of pharmacognosy and pharmaceutical research. 2664-7176 2664-7168 2664-7176