The use of powerful here is subjective. It's pretty mild when adminstred to a huge[1] animal like the "third chimp", yours truly, but very effective on the intended prey of the viper


[1] Contrary to what some people mistakenly believe humans are among the top fraction of percentile of animal size, there are just a handful of species that are larger in mass compared to the tens of thousands that are way teenier... go figure?