Have only found a couple that might be useful.
Mordayn Vapor: 200gp
Inhaled;
Fort Save;
Duration 1d20+10min;
Primary Effect - 50% chance to loose action, like bestow curse;
Secondary Effect - 1d4 Con dam, 1d4 Wis Dam;
Side Effect - After end of duration, Will Save or under suggestion to do whatever necessary to gain access to drug
Overdose - if taken twice within an hour, second dose does 1d10 Con dam, 1d10 wis dam
Oruighen: 20gp
Inhaled;
Fort Save;
Blinded for 2d4 min, -2 attacks skills, saving throws
These are the only two I found that I can use offensively. The rest provide some small buff, like Kammarath that gived +2 Dex and Expeditious retreat for 1d4+1m (80gp)