Affide crystals inside a suicide tooth
A suicide pill was a tablet containing a deadly agent, purposefully swallowed by someone to bring about their own swift death. These pills, referred to as "lullabies," were carried by members of the Rebel Alliance Intelligence Service. One example of such a suicide pill was the affide crystal, a neurotoxin resembling a crystal. Certain spies concealed these affide crystals as a prosthetic tooth for use if they were captured or subjected to torture.