Drugs
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What is a drug?
Natural or synthetic substance that is used to produce psychological or physiological effects in humans or other higher order animals
Drugs of abuse or illicit drugs
When drugs are produced legally or illegally, and are taken strictly for pleasure
When drugs are taken for a therapeutic reason, they are known as what?
Pharmaceuticals
Body’s physical need– or addiction– to a specific chemical
Drug dependence
The severity of likelihood of the dependence is influenced by what?
Nature of the drug Route of administration Dose Frequency of use Individual rate of metabolism Personal characteristics of user
Drug dependence can be . . .
Physical, psychological, or involve aspects of both
Physical dependence involves what?
Physiological side effects of tolerance and withdrawal that usually results from chronic use
Physical dependence can result in what?
Withdrawal sickness
What is withdrawal sickness?
When the drug is abruptly stopped, the body will go through an illness that can have side effects worse than taking the drug
Examples of specific classes of drugs that are more prone to physical dependency?
Narcotics and depressants
Psychological Dependence is considered what?
Addiction
Addiction involves what?
Perceived need or desire for a drug Inability to function normally without drug
Addicts often ponder drug use long after ____________ has subsided
Physical need
Two major patterns of abuse?
Initiated medically and unable to stop after medication course is over Experimentation and recreational use
Tolerance
The need to ingest progressively larger amounts of a drug to maintain a desired effect
Tolerance is characterized by marked decrease in both _______ and _______ of desired effect of a dosage
Time duration and intensity
Tolerance development?
Inconsistent and unpredictable
What often accompanies increased tolerance?
Toxic side effects
Natural drugs?
Chemicals used either therapeutically or recreationally that are made from plants or animals
What kind of drugs can be either raw or refined?
Plant-derived
Raw plant-derived drugs
Cannabis, mushrooms
Refined plant-derived drugs
Heroin, cocaine
What type of drugs tend to be more pharmaceutical in nature?
Animal-derived drugs
Examples of animal-derived drugs that tend to be more pharmaceutical in nature?
Insulin Cod liver Thyroid Bufotenine (venom from toads)