Codiene, morphine, and opium are classified as what type of drugs?

Codiene, morphine, and opium are classified as narcotics because they are opioid substances that primarily act on the central nervous system to relieve pain. These drugs bind to specific receptors in the brain, leading to a decrease in the perception of pain, but also affecting mood, consciousness, and other functions. The term "narcotic" historically referred to any psychoactive compound with sedative properties, but in the context of modern pharmacology, it is largely associated with opioids.

Narcotics can induce a range of effects, including pain relief, sedation, and, at higher doses, a sense of euphoria. Due to their potential for dependence and abuse, these substances are regulated under various drug control laws. Understanding narcotics is particularly important for professionals in the field of chemical dependency counseling, as they often deal with clients facing addiction to these substances.