The opiates are central nervous system depressants that are found in OPIUM or are derived from a substance found in opium, which is the juice of the opium poppy (Papaver Somniferum). The opioids include the opiates, along with totally synthetic agents, and naturally occurring peptides that bind to one or more opioid receptors found in a number of animal species. In general usage, both terms are often used interchangeably—but opioids is the larger grouping.

The effects of opium have been known for several thousand years. For most of this time it was not clear which of the ingredients in opium provided its analgesic (painkilling) and other therapeutic properties. Regardless of their benefits, health care providers are often afraid to prescribe them for fear of psychological dependence and sale to illegal markets (Carver, 2000). Still, the medical community has been increasing the use of opioid analgesics (Increasing...