Narcotics are controlled substances. The U.S. Drug Enforcement Administration (DEA) enforces controlled substance laws and regulations of the United States.
The term "narcotic" derived from the Greek word for stupor, originally referred to a variety of substances that dulled the senses and relieved pain. Today, in a legal context, narcotic refers to opium, opium derivatives, and semi-synthetic substitutes. In the medical context, opiate describes any of the narcotic opioids found as a natural product processed from the sap of the opium poppy plant.
For the purpose of this discussion, the term narcotic refers to all opiate and opioid drugs that produce morphine-like effects.
The DEA lists four categories of Opiate (opioid) Narcotics:
Narcotics of Natural Origin
Narcotics Treatment Drugs
For more information about Opiate (opioid) Narcotics please visit the DEA website at: http://www.justice.gov/dea/index.htm