Final answer:
Narcotic analgesics are drugs that reduce pain with drowsiness and loss of consciousness in higher doses. Examples of narcotic analgesics include opium, heroin, fentanyl, morphine, oxycodone, and methadone.
Step-by-step explanation:
Narcotic analgesics are drugs that reduce pain with drowsiness and loss of consciousness in higher doses. They are mainly used to relieve severe pain. Examples of narcotic analgesics include opium, heroin, fentanyl, morphine, oxycodone, and methadone. These drugs can be derived from the opium poppy plant or can be synthetic versions of opiate drugs.