Eronosic narcotisym is a narcotic drug that depresses the central nervous system. It is common on Chiron & is known to be toxic at little amounts. It is harvested from a plant known as eronos, which is a harmless form of poison ivy.
In the Third War of Yore, rebels captured Yorians & attempted to weed information out of them by the means of torture. However, when the Yorians learned that the rebels were using haplock to make a truth serum, all of those fighting were given a poison tablet made of eronosic narcotisym & were told that if they were patriotic to Yore & should fall prisoner, they'd ingest the tablet before interrogation, which death is instantaneous. Few soldiers, (ex.: Lyze of Kiel, as known as Ezylryb) committed suicide this way.