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Learn the key guidelines for responsible drug and alcohol consumption, how drugs work in the body, their effects, and routes of administration. Understand drug classifications, metabolism, side effects, and contraindications to make informed choices.
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Chapter 16/18 Drugs/Alcohol
Formula to Follow • No more 3drinks/occasion • No more than 2/wk • Drink on full stomach • Metabolize 1 drink/hour
Bodies Defense • Taste bad • Throw up • Pass out
Drug Use • Quick fix • Headache, stomach ache, fatigue, mood • Need to change lifestyle
Drugs Defined • Substance alters biological process • Increase, decrease, start, or stop body process • Classified-biological effect • Diuretic, analgesic, stimulant
How They Work • Drugs hook to cell protein receptors • Resemble natural chemical • Prevent or increase release neurotransmitters
Side Effects • Unintended action • Drug binds to several cells
Contraindication • Medical reason not to take a drug • Pregnant, age, taking another drug
Route Administration • Ingest • Inhale • Inject • absorb
Metabolism • Liver- destroys • Kidney/lungs-eliminate
Effectiveness • Therapeutic Index- how safe • Effective dose(ED50)- effective in 50% • Lethal dose(LD50)- lethal dose in 50% • LD50/ED50 • Want large difference
Legal Use • Prescription= $100 billion/yr • Non-prescription=$12 billion/yr • Most sold=psychoactive drugs • Sleeping, mood altering
Printed Advertisement • Heavy regulated • Effectiveness, side effects, precaution, contraindications • TV and Internet • Little regulated