Cyanide can be found in all of the following areas.
For a table of all Resource Nodes by skill and level see Resource Nodes.
The regions listed below, if any, are controlled by the resources fields of the Zone and POI templates. If you know a region where this Resource Node object is found and do not see it here, please find the Zone and POI pages and add the Resource Node object name to the resources fields. Your fellow gatherers will thank you!