Comprehensive Review on Phytochemicals, Pharmacological and Clinical Potentials of Gymnema sylvestre oleh Farzana Khan, Farzana Khan, Md. Moklesur Rahman Sarker, Md. Moklesur Rahman Sarker, Long Chiau Ming, Long Chiau Ming, Isa Naina Mohamed, Chao Zhao, Bassem Y. Sheikh, Hiew Fei Tsong, Mohammad A. Rashid