Cocaine is a powerfully-addictive stimulant that directly affects the brain. Cocaine is not a new drug. In fact, it is one of the oldest known drugs. The pure chemical, cocaine hydrochloride, has been an abused substance for more than 100 years, and coca leaves, the source of cocaine, have been ingested for thousands of years.1
Pure cocaine was first extracted from the leaf of the Erythroxylon coca bush, which grows primarily in Peru and Bolivia, in the mid-19th century. In the early 1900s, it became the main stimulant drug used in most of the tonics/elixirs that were developed to treat a wide variety of illnesses.2
Cocaine abuse has a long history and is rooted into the drug culture in the U.S. It is an intense euphoric drug with strong addictive potential. With the increase in purity, the advent of the free-base form of the cocaine ("crack"), and its easy availability on the street, cocaine continues to burden both the law enforcement and health care systems in America.3
The powdered, hydrochloride salt form of cocaine can be snorted or dissolved in water and injected. Crack is cocaine that has not been neutralized by an acid to make the hydrochloride salt. This form of cocaine comes in a rock crystal that can be heated and its vapors smoked. The term “crack” refers to the crackling sound heard when it is heated.4
Today, cocaine is a Schedule II drug under the Controlled Substances Act of 1970, meaning that it has high potential for abuse, but can be administered by a doctor for legitimate medical uses, such as local anesthesia for some eye, ear, and throat surgeries.
Blow, nose candy, snowball, tornado, wicky stick, Perico (Spanish) 5
Cocaine’s effects appear almost immediately after a single dose, and disappear within a few minutes or hours. Taken in small amounts (up to 100 mg), cocaine usually makes the user feel euphoric, energetic, talkative, and mentally alert, especially to the sensations of sight, sound, and touch. It can also temporarily decrease the need for food and sleep. Some users find that the drug helps them perform simple physical and intellectual tasks more quickly, while others experience the opposite effect.6
The duration of cocaine’s immediate euphoric effects depends upon the route of administration. The faster the absorption, the more intense the high. Also, the faster the absorption, the shorter the duration of action. The high from snorting is relatively slow in onset, and may last 15 to 30 minutes, while that from smoking may last 5 to 10 minutes.7
The short-term physiological effects of cocaine include constricted blood vessels; dilated pupils; and increased temperature, heart rate, and blood pressure. Large amounts (several hundred milligrams or more) intensify the user’s high, but may also lead to bizarre, erratic, and violent behavior. These users may experience tremors, vertigo, muscle twitches, paranoia, or, with repeated doses, a toxic reaction closely resembling amphetamine poisoning. Some users of cocaine report feelings of restlessness, irritability, and anxiety. In rare instances, sudden death can occur on the first use of cocaine or unexpectedly thereafter. Cocaine-related deaths are often a result of cardiac arrest or seizures followed by respiratory arrest.8
Cocaine is a powerfully addictive drug. Thus, an individual may have difficulty predicting or controlling the extent to which he or she will continue to want or use the drug. Cocaine’s stimulant and addictive effects are thought to be primarily a result of its ability to inhibit the reabsorption of dopamine by nerve cells. Dopamine is released as part of the brain’s reward system, and is either directly or indirectly involved in the addictive properties of every major drug of abuse.9
An appreciable tolerance to cocaine’s high may develop, with many addicts reporting that they seek but fail to achieve as much pleasure as they did from their first experience. Some users will frequently increase their doses to intensify and prolong the euphoric effects. While tolerance to the high can occur, users can also become more sensitive (sensitization) to cocaine’s anesthetic and convulsant effects, without increasing the dose taken. This increased sensitivity may explain some deaths occurring after apparently low doses of cocaine.10
Use of cocaine in a binge, during which the drug is taken repeatedly and at increasingly high doses, leads to a state of increasing irritability, restlessness, and paranoia. This may result in a full-blown paranoid psychosis, in which the individual loses touch with reality and experiences auditory hallucinations.11
Drug Abuse Recognition (DAR)
As a point of reference, the following objective symptoms: Horizontal Gaze Nystagmus, Vertical Gaze Nystagmus, Lack of Convergence, Pulse, Romberg Stand, Pupil Size, and Pupillary Reaction To Light are determined during a DAR evaluation to identify drug influence and impairment. The following objective symptoms of someone under the influence of cocaine may be used as a reference only, and should not be used to replace certified Drug Abuse Recognition Training.
Please contact Express Diagnostics if you would like more information on DAR-OS or drug abuse recognition training.
CNS stimulants: Amphetamine, cocaine, methamphetamine
|Horizontal Gaze Nystagmus||Not Present|
|Vertical Gaze Nystagmus||Not Present|
|Lack of Convergence||Not Present|
|Pupillary Reaction To Light||Slow|
* Long term stimulant users may have constricted pupils or normal size pupils that react slowly/minimally to light.