Drugs are broadly defined as substances that affect brain and body chemistry. A wide range of substances fit this definition, including legal and widely available drugs such as alcohol, nicotine, and caffeine. Legal over-the-counter and prescription medications are commonly used to treat a broad spectrum of diseases and medical symptoms. Illegal drugs, however, are generally classified separately and encompass substances with perceptible or pronounced effects on physiology, psychology, emotional states, and/or sensory perception. They offer little to no medicinal value and also carry a significant potential for abuse or addiction.
Laws and regulations governing the sale, distribution, and use of drugs vary from country to country. Most national and international laws, however, conform to a similar set of classifications that...Read more