These poison rules are made to make poison much more realistically deadly. Really deadly!!! They are geared to a less heroic, grim and gritty type game. So try to gauge whether they are right for your gaming group.
The poisons are listed by delivery method (swallowed, injected/blade venom, contact). They are also divided into groups of Common, Less Common, Somewhat Rare, Rare, Very Rare and Exotic. These categories refer to the difficulty in brewing the poison; shown below. Some delivery methods do not have Common types.
Common poisons require only a Rank of 1+ to make.
Less Common require a Rank of 9+ to make.
Somewhat Rare requires 12+ Ranks to create.
Rare requires 15+ Ranks to make.
Very Rare needs a Rank of 18+ to brew.
Exotic poisons require 20+ Ranks to create.
Availability refers to the chance that a given poison will be available from a particular individual, who must still have been able to make the poison in question in the first place.
Prices are given in silver pieces ("s") because Domibia uses silver as the primary currency. I don't feel like going in and changing every damned "s" to a "g", so just treat them as gold pieces...
***DISCLAIMER*** I swiped this stuff from an old copy of Different Worlds magazine a long time ago and converted it to GURPS, what I have posted below is my d20 version of the GURPS conversion of the original article, which I no longer have available in order to give proper credit. If you know who the author is, please let me know, so that I know who I am ripping off...
Update 2008: I found out! I got it from "Poison: The Cup of Death", by Larry DiTillio, Issue #31, pg 8-15
Thanks to Steve Brooks who told me back in 2006 but I didn't have my admin account set to forward mail. Ooops!
Common Contact Poisons