Not quite... Brewing a poison requires one wood commoditiy, a container, and a poison... It will then affect everyone in the location that is not divinely protected every 'tick'.

The length of the brew is quite random... some will last upwards of five minutes, hence the annoyance factor of dropping a brew in Fistandantilus location. Sure, he can pick alethe and likely has a hefty supply of it, but having to eat alethe every few seconds for five minutes is a definite annoyance.

Written by my hand on the 25th of Mournsend, in the year 1185.