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.

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Presentation transcript:

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