psychoactive drug classifications. classification systems psychoactive substances can be classified...
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Psychoactive Drug
Classifications
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Classification Systems
Psychoactive substances can be classified in a variety of ways– Common effects– Chemical structure– Drug Enforcement Administration
schedules– Addiction liability (high vs low)
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Drug Enforcement Administration Schedules
Per the U.S. federal government:
Schedule I – high potential for abuse, no currently accepted medical use
Schedule II – high potential for abuse, some currently accepted medical use
Schedule III – potential for abuse is less than I & II, some currently accepted medical use (example: anabolic steroids)
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Drug Enforcement Administration Schedules
Schedule IV: low potential for abuse compared to I-III, currently accepted medical use, limited physical/psychological dependence compared to I-III (Xanax)
Schedule V: low potential for abuse compared to I-IV, currently accepted medical use, limited physical/psychological dependence compared to I-IV (some cough suppressants w/ codeine)
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Drug Classification
Common Effects
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Stimulants
User has improved sense of alertnessEnhanced energyExcitabilityEuphoria/improved sense of well-being/mood elevationPhysiological responses:– Increased heart rate– Increased blood pressure– Flushed skin– Perspiration
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Stimulants
Excessive use:– Irritability– Mood swings– Hallucinations– Heart palpitations– Dizziness– Headache– Chest pain– Death
Example: Cocaine
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Depressants (Sedative-Hypnotics)
Used to induce sleep or relaxationPhysiological responses:– Reduction of tension– Anxiety relief– Speech slurring– Staggered gait– Relaxed muscles
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Depressants
Excessive use:– Slow, shallow breathing– Clammy skin– Weak, rapid pulse– Coma– Death
Example: Alcohol
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Narcotics (Opiates)
Generally used to reduce pain, dull senses, induce sleep
Narcotics are generally a derivative of opium
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Narcotics
Physiological Responses:– Pain relief– Euphoria– Confusion– Drowsiness– Respiratory depression
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Narcotics
Excessive Use:– Increased risk for STD’s with needle use– Nausea/vomiting– Convulsions– Respiratory arrest– Coma, death
Example: Heroin
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Hallucinogens
Used to change perceptions
Used to change mood
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Hallucinogens
Physiological Responses:– Hallucinations– Erratic behavior– Paranoia– Depersonalization (“I am not real”)– Impaired social/occupational functioning– Elevations in heart rate, blood pressure
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Hallucinogens
Excessive Use:– Memory loss– Difficulties with speech, thinking– Depression– Weight loss– Medical emergencies are rare
Example: Peyote
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Cannabis
Physiological Responses:– Euphoria– Relaxation– Impaired memory, concentration– Loss of coordination– Enhancement of senses– Appetite changes– Lowered blood pressure
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Cannabis
Excessive Use (may be controversial):– Respiratory irritation– Fluctuating emotions– Impaired memory– Psychosis (schizophrenia link)
Example:Marijuana