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Cocaine is a powerfully addictive drug of abuse. Once having
tried cocaine, an individual cannot predict or control the extent to
which he or she will continue to use the drug.
The major routes of administration of cocaine are sniffing or
snorting, injecting, and smoking (including free-base and crack cocaine).
Snorting is the process of inhaling cocaine powder through the nose where it is
absorbed into the bloodstream through the nasal tissues. Injecting is the act
of using a needle to release the drug directly into the bloodstream. Smoking
involves inhaling cocaine vapor or smoke into the lungs where absorption into
the bloodstream is as rapid as by injection.
"Crack" is the street name given to cocaine that has been
processed from cocaine hydrochloride to a free base for smoking. Rather than
requiring the more volatile method of processing cocaine using ether, crack
cocaine is processed with ammonia or sodium bicarbonate (baking soda) and water
and heated to remove the hydrochloride, thus producing a form of cocaine that
can be smoked. The term "crack" refers to the crackling sound heard when the
mixture is smoked (heated), presumably from the sodium
bicarbonate.
There is great risk whether cocaine is ingested by inhalation
(snorting), injection, or smoking. It appears that compulsive cocaine use may
develop even more rapidly if the substance is smoked rather than snorted.
Smoking allows extremely high doses of cocaine to reach the brain very quickly
and brings an intense and immediate high. The injecting drug user is at risk
for transmitting or acquiring HIV infection/AIDS if needles or other injection
equipment are shared.
Health
Hazards
Cocaine is a strong central nervous system stimulant that
interferes with the reabsorption process of dopamine, a chemical messenger
associated with pleasure and movement. Dopamine is released as part of the
brain's reward system and is involved in the high that characterizes cocaine
consumption.
Physical effects of cocaine use include constricted peripheral
blood vessels, dilated pupils, and increased temperature, heart rate, and blood
pressure. The duration of cocaine's immediate euphoric effects, which include
hyper-stimulation, reduced fatigue, and mental clarity, depends on the route of
administration. The faster the absorption, the more intense the high. On the
other hand, the faster the absorption, the shorter the duration of action. The
high from snorting may last 15 to 30 minutes, while that from smoking may last
5 to 10 minutes. Increased use can reduce the period of
stimulation.
Some users of cocaine report feelings of restlessness,
irritability, and anxiety. An appreciable tolerance to the high may be
developed, and many addicts report that they seek but fail to achieve as much
pleasure as they did from their first exposure. Scientific evidence suggests
that the powerful neuropsychologic reinforcing property of cocaine is
responsible for an individual's continued use, despite harmful physical and
social consequences. In rare instances, sudden death can occur on the first use
of cocaine or unexpectedly thereafter. However, there is no way to determine
who is prone to sudden death.
High doses of cocaine and/or prolonged use can trigger
paranoia. Smoking crack cocaine can produce a particularly aggressive paranoid
behavior in users. When addicted individuals stop using cocaine, they often
become depressed. This also may lead to further cocaine use to alleviate
depression. Prolonged cocaine snorting can result in ulceration of the mucous
membrane of the nose and can damage the nasal septum enough to cause it to
collapse. Cocaine-related deaths are often a result of cardiac arrest or
seizures followed by respiratory arrest.
Added Danger:
Cocaethylene
When people mix cocaine and alcohol consumption, they are
compounding the danger each drug poses and unknowingly forming a complex
chemical experiment within their bodies. NIDA-funded researchers have found
that the human liver combines cocaine and alcohol and manufactures a third
substance, cocaethylene, that intensifies cocaine's euphoric effects, while
possibly increasing the risk of sudden death.
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