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Cocaine and Crack

  1. Intercultural history
  2. Chemical preparation
  3. Pharmacokinetics and routes of administration
  4. Subjective effects
  5. Physiological effects
  6. Chronic use
  7. Cocaine as a social drug

Cocaine is originally a plant-based drug derived from the coca plant, which is predominantly native to Latin and South America.

As early as 1,300 years before our era, the indigenous peoples chewed the leaves of this plant. In the context of Incan culture, coca leaves were reserved as a gift from the sun god for only the most important members of a tribe (especially priests).


Cocaine, like all psychoactive drugs, is an alkaloid and can be processed in various ways:

  • Made by crushing coca leaves
  • Approx. 70% active substance content
  • Highly toxic
  • Chemical processing of the leaves
  • Often cut for sale with baking soda or laxatives
  • Approx. 20-30% of original active substance in street cocaine
  • Chemical conversion to basic form
  • Dissolved in ether
  • Higher active substance concentration
  • Cooked in baking soda
  • “Pellet-shaped” substance
  • Name derives from the “cracking” sounds during production
  • Usually smoked

Pharmacokinetics and Routes of Administration

Section titled “Pharmacokinetics and Routes of Administration”
RouteTime to EffectDurationSubstance ContentBioavailability
Oral (chewing)30-60 min.90 min.0.5-1%25%
Nasal2-4 min.30-45 min.20-80%20-30%
Intravenous30-45 sec.20-30 min.20-80%100%
Inhalation/Smoking8-10 sec.5-10 min.80-100%30%

The faster the drug enters the bloodstream, the more intense the “kick.”

Chewing coca leaves (oral intake) produces a slow effect without a “kick.” With intravenous administration, the effectiveness is highest.

  • Cocaine is lipid-soluble — can cross the blood-brain barrier unhindered
  • Biological half-life: approx. 30 minutes
  • Toxic dose: 1-2 mg/kg body weight (can be lethal or cause severe damage)
  • Detectability in urine: 3-5 days (in chronic users 15-22 days)

Cocaine blocks the dopamine transporter molecules and prevents reuptake into nerve cells. Dopamine thus repeatedly docks onto the receptors again and again.

Result: A sensory overload that explains the euphoric feeling of happiness.

In chronic users, the body reduces dopamine production. When use is stopped, a dopamine deficiency occurs — a possible cause of depression and irritability (“crash”).


Positive effects (vary depending on personality):

  • Positive behavioral reinforcement
  • Increased activity (motor and mental)
  • Mood elevation to euphoria
  • Inflated self-esteem
  • Heightened alertness
  • High alcohol tolerance
  • Absence of hunger and thirst
  • Stimulating effect on libido

Adverse effects:

  • Anxiety states
  • Paranoia
  • Overstimulation
  • Aggressiveness
  • Eating and sleep disorders

The physiological picture corresponds to a stress situation — the body is “artificially” put on “alert”:

  • Tense muscles
  • Increased blood flow
  • Higher pulse rate
  • Dilated pupils

“Flight, Fight, and Fright” — the flight, fight, and fear response.


With chronic use, in addition to psychological dependence (craving), the following occur:

  • Depression
  • Anxiety states
  • Helplessness (“drug seeking behavior”)
  • Increased stroke risk with high blood pressure
  • Cardiac arrhythmias
  • Seizures

The state of constant alertness can lead to severe neuronal damage:

  • Lowering of the stimulus threshold
  • Overreactions to even small stimuli

  • Late 19th century: Cocaine was considered a “miracle substance” (even Freud claimed magical properties)
  • Coca-Cola: Contained approx. 200 mg of cocaine per liter
  • 1914: First official ban on non-medical use in the USA
  • 1924: Regulation of amounts in medications
  • 1920s: “Cocaine wave” among the bohemian scene in Europe
  • 1970s: Revival as a “fashionable drug”
  • 1980s: Crack gains popularity, younger user demographic

Crack is more of a “street drug”:

  • More intense effect than cocaine
  • Often excessive consumption
  • High risk of losing control

Cocaine could be described as the “clean drug of capitalist achievement society”:

  • Can be consumed moderately
  • Possible without dose escalation

People are expected to “function” within the system — whether at work or in leisure time. They are under the pressure of a society in which negative feelings (exhaustion, sadness, pessimism) seem to have no place.

This pressure can on one hand be a reason for rising drug consumption numbers (“cocaine as a performance drug”), and on the other hand cocaine appears to be part of a “subcultural identity” — a dual nature of cocaine.