Toad venom, in the form of dried toad secretions derived from either Bufo bufo gargarizans Cantor or B. melanostictus Schneider, has been widely used as a cardio tonic, diuretic, anodyne and antineoplastic agent in Asia. The medicinal resource of toad venom is abundant in China. Besides the above 2 species, other Bufo sp. such as B. b. andrewsi Schimidt and B. raddei STRAUCH were also used to provide secretions. Further more, toad venom is an expensive medicine, the adulterant can be found in commercial pro...