National Certified Addiction Counselor, Level I (NCAC I) Practice Exam 2025 – Comprehensive All-in-One Guide to Exam Success!

The definition of a narcotic traditionally refers to a class of drugs that are derived from the opium poppy or are synthetic analogs of opium. These substances, which include morphine and codeine, act on the central nervous system to produce pain relief and sedation. They are typically characterized by their ability to create a sense of euphoria and their potential for addiction and dependence.

In this context, the correct answer specifically points to these substances, as they are often classified under the term "narcotics" within both legal and medical frameworks. The others do not accurately reflect this definition: psychoactive substances derived from the coca plant refer to stimulants like cocaine, while over-the-counter pain relievers generally include non-narcotic analgesics like acetaminophen or ibuprofen. Thus, understanding the specific origins and classifications of narcotics is crucial for anyone studying addiction counseling and substance use disorders.