Alright, if we take a look at indigo role we can see the dude has a one shot of anti dote, and now personally I don't know why mafia would have an anti dote if they are actually the ones doing the poisoning (unless yo han taking into account redirect or mafia using it on one another?), which is why I have reserves in poisoner either being an indie or a townie of some sort, but if the poisoner is a townie.