Have you ever fought cazadors or rad scorpions, got poisoned, and used use Antivenom only to be poisoned again literally 1 second later? 
Well now you can be strongly poisoned resistant for 15 secs so you can keep fighting those cazadors without having to taking a bunch of antivenoms every few seconds. 

(I did make the poison resistance 80 in the geck but it changed to 170 for some reason, though Ill keep it like that cause why not?)
(no longer requires all dlcs)