X-1

X-1 was the designation given by Myk Bidlor and his team to the poison that killed Aruk the Hutt. It had been developed by the Malkite Poisoners. Extremely rare and expensive, it preyed on the tissues of the brain, slowing a victim's thinking and making them become slow and sluggish. Victims would become addicted to the substance, over a space of several weeks or months, to such an extent that an abrupt withdrawal of the toxin would kill the addicted being.

Text and facts from the “X-1/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.