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Chapter 9 Vocabulary

Understanding Drugs and Medicines

TermDefinition
Active Ingredient The chemical component that gives a medicine its action.
Addiction A condition in which a person can no longer control his or her drug use.
Drug Any substance that causes a change in a person's physical or psychological state.
Drug Interaction A condition in which a drug reacts with another drug.
Drug Tolerance A condition in which a user needs more of a drug to get the same effect.
Generic Medicine A medicine made by a company other than the company that developed the original medicine.
Medicine Any drug used to cure, prevent, or treat illness or discomfort.
Over-The-Counter (OTC) Medicine Any medicine that can be bought without a prescription.
Physical Dependence A condition in which the body relies on a given drug in order to function.
Prescription A written order from a doctor for a specific medicine.
Psychoactive Describes a drug or medicine that affects the brain and changes how a person perceives, thinks, or feels.
Psychological Dependence A state of emotionally or physically needing a drug in order to function.
Side Effect Any effect that is caused by a drug and that is different from the drug's intended effect.
Withdrawal Uncomfortable physical and psychological symptoms produced when a physically dependent drug user stops using drugs.
Created by: risdhealth