Anon315, you need turn<em>on</em>your morality code so you do not experience smut stuff in the game. Turning it<em>off</em>allows experience those stuff.<br/><br/>Plus you cannot make poisons from herbs without a workshop/lab and it takes several minutes (the guards come to scene quicker than you can inflict the poison). However your argument is correct; the stat dmg is not prevented but death is still blocked in the city (so Con cannot be reduced under 3 in the city even if poison would allow to do so).