Analgesic

An analgesic was a drug used to relieve pain without inducing a loss of consciousness. Analgesics were often used to treat headaches and to relieve pain induced by mild bruising to severe injury. 

When ordered to create a diversion to slow down a Borg invasion of the USS Enterprise (NCC-1701-E), the EMH in the Enterprise's sickbay offered the intruding Borg drones an analgesic skin cream to combat skin irritation caused by their implants. 

The Doctor begrudgingly gave B'Elanna Torres an analgesic when she complained of a bad headache in 2373.