top of page
Cocaine

Cocaine is a powerfully addictive stimulant drug made from the leaves of the coca plant native to South America. It produces short-term euphoria, energy, and talkativeness in addition to potentially dangerous physical effects like raising heart rate and blood pressure. The powdered form of cocaine is either inhaled through the nose (snorted), where it is absorbed through the nasal tissue, or dissolved in water and injected into the bloodstream.

Crack is a form of cocaine that has been processed to make a rock crystal (also called “freebase cocaine”) that can be smoked. The crystal is heated to produce vapors that are absorbed into the blood-stream through the lungs. (The term “crack” refers to the crackling sound produced by the rock as it is heated.)

The intensity and duration of cocaine’s pleasurable effects depend on the way it is administered. Injecting or smoking cocaine delivers the drug rapidly into the bloodstream and brain, producing a quicker and stronger but shorter-lasting high than snorting. The high from snorting cocaine may last 15 to 30 minutes; the high from smoking may last 5 to 10 minutes.

In order to sustain their high, people who use cocaine often use the drug in a binge pattern—taking the drug repeatedly within a relatively short period of time, at increasingly higher doses. This practice can easily lead to addiction, a chronic relapsing disease caused by changes in the brain and characterized by uncontrollable drug-seeking no matter the consequences.

How Does Cocaine Affect the Brain?

Cocaine is a strong central nervous system stimulant that increases levels of the neurotransmitter dopamine in brain circuits regulating pleasure and movement.

Normally, dopamine is released by neurons in these circuits in response to potential rewards (like the smell of good food) and then recycled back into the cell that released it, thus shutting off the signal between neurons. Cocaine prevents the dopamine from being recycled, causing excessive amounts to build up in the synapse, or junction between neurons. This amplifies the dopamine signal and ultimately disrupts normal brain communication. It is this flood of dopamine that causes cocaine’s characteristic high.

With repeated use, cocaine can cause long-term changes in the brain’s reward system as well as other brain systems, which may lead to addiction. With repeated use, tolerance to cocaine also often develops; many cocaine abusers report that they seek but fail to achieve as much pleasure as they did from their first exposure. Some users will increase their dose in an attempt to intensify and prolong their high, but this can also increase the risk of adverse psychological or physiological effects.

After cannabis, cocaine is the most frequently used illegal drug globally. Between 14 and 21 million people use the drug each year. Use is highest in North America followed by Europe and South America. Between one and three percent of people in the developed world use cocaine at some point in their life. In 2013 cocaine use directly resulted in 4,300 deaths, up from 2,400 in 1990. The leaves of the coca plant have been used by Peruvians since ancient times. Cocaine was first isolated from the leaves in 1860.[9] Since 1961 the international Single Convention on Narcotic Drugs has required countries to make recreational use of cocaine a criminal offence.[

Discovery

For over a thousand years South American indigenous peoples

have chewed the leaves of

Erythroxylon coca, a plant that contains vital nutrients as well as numerous alkaloids, including cocaine. The coca leaf was, and still is, chewed almost universally by some indigenous communities. The remains of coca leaves have been found with ancient Peruvian mummies, and pottery from the time period depicts humans with bulged cheeks, indicating the presence of something on which they are chewing. There is also evidence that these cultures used a mixture of coca leaves and saliva as an anesthetic for the performance of trepanation.

When the Spanish arrived in South America, most at first ignored aboriginal claims that the leaf gave them strength and energy, and declared the practice of chewing it the work of the Devil. But after discovering that these claims were true, they legalized and taxed the leaf, taking 10% off the value of each crop. In 1569,

Nicolás Monardes described the indigenous peoples' practice of chewing a mixture of tobacco and coca leaves to induce "great contentment"

#About 1,800 users (age 12 and older) try cocaine for the first time each day.
#Around 8% of all 12th graders have used or tried cocaine in the last year.
#In 2012, it was estimated that around 37 million people in the US had used cocaine.
#Men accounted for around 22 million of these users, far higher than women.
#Most users were above the age of 26.
#The majority of users were also white non-Hispanic in this data set.
#Around 448, 000 people were hospitalized in 2005 for incidents involving cocaine. This is more than for any other drug
#Although the number of first time users each day has declined in recent years, the number of cocaine overdose deaths has been steadily on the rise over the years.
#Users are at greater risk of death during overdose with the presence of other drugs like alcohol, prescription narcotics, or other illegal drugs.

What Are the Other Health Effects of Cocaine?

Cocaine affects the body in a variety of ways. It constricts blood vessels, dilates pupils, and increases body temperature, heart rate, and blood pressure. It can also cause headaches and gastrointestinal complications such as abdominal pain and nausea. Because cocaine tends to decrease appetite, chronic users can become malnourished as well.

Most seriously, people who use cocaine can suffer heart attacks or strokes, which may cause sudden death. Cocaine-related deaths are often a result of the heart stopping (cardiac arrest) followed by an arrest of breathing.

People who use cocaine also put themselves at risk for contracting HIV, even if they do not share needles or other drug paraphernalia. This is because cocaine intoxication impairs judgment and can lead to risky sexual behavior.

Some effects of cocaine depend on the method of taking it. Regular snorting of cocaine, for example, can lead to loss of the sense of smell, nosebleeds, problems with swallowing, hoarseness, and a chronically runny nose. Ingesting cocaine by the mouth can cause severe bowel gangrene as a result of reduced blood flow. Injecting cocaine can bring about severe allergic reactions and increased risk for contracting HIV, hepatitis C, and other blood-borne diseases.

Binge-patterned cocaine use may lead to irritability, restlessness, and anxiety. Cocaine abusers can also experience severe paranoia—a temporary state of full-blown paranoid psychosis—in which they lose touch with reality and experience auditory hallucinations.

Cocaine is more dangerous when combined with other drugs or alcohol (poly-drug use). For example, the combination of cocaine and heroin (known as a “speedball”) carries a particularly high risk of fatal overdose.

bottom of page