As a comparison , in one test the minimum lethal dose of for a guinea pig was 40 -- 67 mg .
Only 1.7 mg was necessary when Daboia russelii venom was used .
As a comparison , in one test the minimum lethal dose of for a guinea pig was 40 -- 67 mg , but only 1.7 mg was necessary when Daboia russelii venom was used .