Infra-sensory drugs bound for the Tantalus Penal Colony
Infra-sensory drugs were specialized therapeutic chemical compounds utilized in the treatment of psychiatric disorders.
In 2266, the USS Enterprise delivered a shipment of infra-sensory drugs to Doctor Tristan Adams, director of the Tantalus V penal colony. (TOS: "Dagger of the Mind")
The final draft of the episode's script specifies the wording on these containers (indicating that it is to be "stenciled"), including the name of the drugs, though no further mention is ever made of the significance of the type of drug being shipped.