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AP Psychology
Opioids are a class of drugs that act on the body's opioid receptors, reducing pain and producing feelings of euphoria. They can be natural (e.g., morphine) or synthetic (e.g., oxycodone).
Natural chemicals in the brain that act as the body's natural painkillers and mood enhancers.
The phenomenon where increasing amounts of opioids are needed to achieve the same desired effect due to neural adaptations.
Unpleasant physical and psychological symptoms that occur when someone stops using opioids after prolonged use.