Oneirogenic penthrene mist
Oneirogenic penthrene mist was a type of anesthetic gas used by the Starfleet in the mid-23rd century.

In 2256, Commander Ellen Landry ordered the  computer to dispense oneirogenic penthrene mist into Ripper's containment pen, so that she could remove a claw for study. The mist, though, proved ineffective on the , despite sensor readings suggesting otherwise. ()
Drugs