Crack cocaine, commonly known simply as crack, and also known as rock, is a

free base Free base (freebase, free-base) is the conjugate base (deprotonated) form of an amine, as opposed to its conjugate acid (protonated) form. The amine is often an alkaloid, such as nicotine, cocaine, morphine, and ephedrine, or derivatives thereo ...

form of the stimulant

cocaine Cocaine (from , from , ultimately from Quechuan languages, Quechua: ''kúka'') is a central nervous system (CNS) stimulant mainly recreational drug use, used recreationally for its euphoria, euphoric effects. It is primarily obtained from t ...

that can be

smoked Smoking is the process of flavoring, browning, cooking, or preserving food by exposing it to smoke from burning or smoldering material, most often wood. Meat, fish, and ''lapsang souchong'' tea are often smoked. In Europe, alder is the tradi ...

. Crack offers a short, intense

high High may refer to: Science and technology * Height * High (atmospheric), a high-pressure area * High (computability), a quality of a Turing degree, in computability theory * High (tectonics), in geology an area where relative tectonic uplift ...

to smokers. The ''Manual of Adolescent Substance Abuse Treatment'' calls it the most

addictive Addiction is a neuropsychological disorder characterized by a persistent and intense urge to engage in certain behaviors, one of which is the usage of a drug, despite substantial harm and other negative consequences. Repetitive drug use oft ...

form of cocaine. Crack cocaine first saw widespread use as a

recreational drug Recreational drug use indicates the use of one or more psychoactive drugs to induce an altered state of consciousness either for pleasure or for some other casual purpose or pastime by modifying the perceptions and emotions of the user. When a ...

in primarily

impoverished Poverty is the state of having few material possessions or little

income

neighborhoods in

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...

Baltimore Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...

Washington, D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...

Los Angeles Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world' ...

San Francisco San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of Ca ...

, and

Miami Miami ( ), officially the City of Miami, known as "the 305", "The Magic City", and "Gateway to the Americas", is a East Coast of the United States, coastal metropolis and the County seat, county seat of Miami-Dade County, Florida, Miami-Dade C ...

in late 1984 and 1985; this rapid increase in use and availability was named the "

crack epidemic The crack epidemic was a surge of crack cocaine use in major cities across the United States throughout the entirety of the 1980s and the early 1990s. This resulted in a number of social consequences, such as increasing crime and violence in Ameri ...

", which began to wane in the 1990s. The use of another highly addictive stimulant drug,

crystal meth Methamphetamine (contracted from ) is a potent central nervous system (CNS) stimulant that is mainly used as a recreational drug and less commonly as a second-line treatment for attention deficit hyperactivity disorder and obesity. Methamphe ...

, ballooned between 1994 and 2004.

Physical and chemical properties

Purer forms of crack resemble off-white, jagged-edged "rocks" of a hard, brittle plastic, with a slightly higher density than candle wax. Like

in other forms, crack rock acts as a

local anesthetic A local anesthetic (LA) is a medication that causes absence of pain sensation. In the context of surgery, a local anesthetic creates an absence of pain in a specific location of the body without a loss of consciousness, as opposed to a general an ...

, numbing the

tongue The tongue is a muscular organ (anatomy), organ in the mouth of a typical tetrapod. It manipulates food for mastication and swallowing as part of the digestive system, digestive process, and is the primary organ of taste. The tongue's upper surfa ...

mouth In animal anatomy, the mouth, also known as the oral cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds. It is also the cavity lying at the upper end of the alimentary canal, bounded on ...

only where directly placed. Purer forms of crack will sink in water or melt at the edges when near a flame (crack vaporizes at 90 °C, 194 °F). Crack cocaine sold on the streets may be

adulterated An adulterant is caused by the act of adulteration, a practice of secretly mixing a substance with another. Typical substances that are adulterated include but are not limited to food, cosmetics, pharmaceuticals, fuel, or other chemicals, t ...

(or "cut") with other substances mimicking the appearance of crack to increase bulk. Use of

toxic Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a subst ...

adulterants such as

levamisole Levamisole, sold under the brand name Ergamisol among others, is a medication used to treat parasitic worm infections, specifically ascariasis and hookworm infections. It is taken by mouth. Side effects may include abdominal pain, vomiting, he ...

, a drug used to treat

parasitic worm Parasitic worms, also known as helminths, are large Parasitism#Basic concepts, macroparasites; adults can generally be seen with the naked eye. Many are intestinal worms that are soil-transmitted helminth, soil-transmitted and intestinal parasit ...

infections, has been documented.

Synthesis

Sodium bicarbonate Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3. It is a salt composed of a sodium cation ( Na+) and a bicarbonate anion ( HCO3−) ...

(NaHCO₃, common baking soda) is a base used in the preparation of crack, although other

weak base A weak base is a base that, upon dissolution in water, does not dissociate completely, so that the resulting aqueous solution contains only a small proportion of hydroxide ions and the concerned basic radical, and a large proportion of undissociat ...

s may substitute for it. The net reaction when using sodium bicarbonate is :Coc-H⁺Cl⁻ + NaHCO₃ → Coc + H₂O + CO₂ + NaCl With

ammonium bicarbonate Ammonium bicarbonate is an inorganic compound with formula (NH4)HCO3. The compound has many names, reflecting its long history. Chemically speaking, it is the bicarbonate salt of the ammonium ion. It is a colourless solid that degrades readily to ...

: :Coc-H⁺Cl⁻ + NH₄HCO₃ → Coc + NH₄Cl + CO₂ + H₂O With

ammonium carbonate Ammonium carbonate is a salt with the chemical formula (NH4)2CO3. Since it readily degrades to gaseous ammonia and carbon dioxide upon heating, it is used as a leavening agent and also as smelling salt. It is also known as baker's ammonia and is ...

: :2(Coc-H⁺Cl⁻) + (NH₄)₂CO₃ → 2 Coc + 2 NH₄Cl + CO₂ + H₂O Crack cocaine is frequently purchased already in rock form, although it is not uncommon for some users to "wash up" or "cook" powder cocaine into crack themselves. This process is frequently done with

baking soda Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3. It is a salt composed of a sodium cation ( Na+) and a bicarbonate anion ( HCO3−) ...

(sodium bicarbonate), water, and a spoon. Once mixed and heated, the bicarbonate reacts with the hydrochloride of the powder cocaine, forming

cocaine and carbonic acid (H₂CO₃) in a reversible acid-base reaction. The heating accelerates the degradation of carbonic acid into

carbon dioxide Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...

(CO₂) and water. Loss of CO₂ prevents the reaction from reversing back to cocaine hydrochloride.

Free base Free base (freebase, free-base) is the conjugate base (deprotonated) form of an amine, as opposed to its conjugate acid (protonated) form. The amine is often an alkaloid, such as nicotine, cocaine, morphine, and ephedrine, or derivatives thereo ...

cocaine separates as an oily layer, floating on the top of the now leftover aqueous phase. It is at this point that the oil is picked up rapidly, usually with a pin or long thin object. This pulls the oil up and spins it, allowing air to set and dry the oil, and allows the maker to roll the oil into the rock-like shape. Crack vaporizes near temperature 90 °C (194 °F), much lower than the cocaine hydrochloride melting point of 190 °C (374 °F). Whereas cocaine hydrochloride cannot be smoked (burns with no effect), ''crack cocaine'' when smoked allows for quick absorption into the blood stream, and reaches the brain in eight seconds. Crack cocaine can also be injected intravenously with the same effect as powder cocaine. However, whereas powder cocaine dissolves in water, crack must be dissolved in an acidic solution such as lemon juice (containing

citric acid Citric acid is an organic compound with the chemical formula HOC(CO2H)(CH2CO2H)2. It is a colorless weak organic acid. It occurs naturally in citrus fruits. In biochemistry, it is an intermediate in the citric acid cycle, which occurs in t ...

) or white vinegar (containing

acetic acid Acetic acid , systematically named ethanoic acid , is an acidic, colourless liquid and organic compound with the chemical formula (also written as , , or ). Vinegar is at least 4% acetic acid by volume, making acetic acid the main component ...

), a process that effectively reverses the original conversion of powder cocaine to crack.

Harm reduction Harm reduction, or harm minimization, refers to a range of public health policies designed to lessen the negative social and/or physical consequences associated with various human behaviors, both legal and illegal. Harm reduction is used to de ...

and

public health Public health is "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and private, communities and individuals". Analyzing the det ...

agencies may distribute packets of citric acid or

ascorbic acid Vitamin C (also known as ascorbic acid and ascorbate) is a water-soluble vitamin found in citrus and other fruits and vegetables, also sold as a dietary supplement and as a topical 'serum' ingredient to treat melasma (dark pigment spots) an ...

(Vitamin C) for this purpose.

Recreational use

Crack cocaine is commonly used as a recreational drug. Effects of crack cocaine include

euphoria Euphoria ( ) is the experience (or affect) of pleasure or excitement and intense feelings of well-being and happiness. Certain natural rewards and social activities, such as aerobic exercise, laughter, listening to or making music and da ...

, supreme confidence, loss of appetite,

insomnia Insomnia, also known as sleeplessness, is a sleep disorder in which people have trouble sleeping. They may have difficulty falling asleep, or staying asleep as long as desired. Insomnia is typically followed by daytime sleepiness, low energy, ...

alertness Alertness is the state of active attention by high sensory awareness such as being watchful and prompt to meet danger or emergency, or being quick to perceive and act. It is related for psychology . A lack of alertness is a symptom of a ...

, increased energy, a craving for more cocaine, and potential paranoia (ending after use)."DEA, Drug Information, Cocaine", United States DOJ Drug Enforcement Administration, 2008, webpage:
DEA-cocaine
. "Life or Meth – CRACK OF THE 90'S", Salt Lake City Police Department, Utah, 2008, PDF file:
Methlife-PDF
. Its initial effect is to release a large amount of

dopamine Dopamine (DA, a contraction of 3,4-dihydroxyphenethylamine) is a neuromodulatory molecule that plays several important roles in cells. It is an organic compound, organic chemical of the catecholamine and phenethylamine families. Dopamine const ...

, a brain chemical inducing feelings of euphoria. The high usually lasts from 5 to 10 minutes, after which time dopamine levels in the brain plummet, leaving the user feeling depressed and low. When (powder) cocaine is dissolved and injected, the absorption into the bloodstream is at least as rapid as the absorption of the drug which occurs when crack cocaine is smoked, and similar euphoria may be experienced.

Adverse effects

Physiological

The short-term physiological effects of cocaine include constricted blood vessels,

dilated pupils Mydriasis is the dilation of the pupil, usually having a non-physiological cause, or sometimes a physiological pupillary response. Non-physiological causes of mydriasis include disease, trauma, or the use of certain types of drugs. Normally, as ...

, and increased temperature, heart rate, and blood pressure. 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 Cardiac arrest is when the heart suddenly and unexpectedly stops beating. It is a medical emergency that, without immediate medical intervention, will result in sudden cardiac death within minutes. Cardiopulmonary resuscitation (CPR) and possib ...

or seizures followed by respiratory arrest. Like other forms of cocaine, smoking crack can increase heart rate and blood pressure, leading to long-term cardiovascular problems. Some research suggests that smoking crack or free base cocaine has additional health risks compared to other methods of taking cocaine. Many of these issues relate specifically to the release of

methylecgonidine Methylecgonidine (anhydromethylecgonine; anhydroecgonine methyl ester; AEME) is a chemical intermediate derived from ecgonine or cocaine. Methylecgonidine is a pyrolysis product formed when crack cocaine is smoked, making this substance a useful ...

and its effect on the heart, lungs, and liver. *Toxic

adulterant An adulterant is caused by the act of adulteration, a practice of secretly mixing a substance with another. Typical substances that are adulterated include but are not limited to food, cosmetics, pharmaceuticals, fuel, or other chemicals, that ...

s: Many substances may have been added to expand the weight and volume of a batch, while still appearing to be pure crack. Occasionally, highly toxic substances are used, with a range of corresponding short and long-term health risks. Adulterants used with crack and cocaine include

milk powder Powdered milk, also called milk powder, dried milk, or dry milk, is a manufactured dairy product made by evaporating milk to dryness. One purpose of drying milk is to preserve it; milk powder has a far longer shelf life than liquid milk and do ...

, sugars such as

glucose Glucose is a simple sugar with the molecular formula . Glucose is overall the most abundant monosaccharide, a subcategory of carbohydrates. Glucose is mainly made by plants and most algae during photosynthesis from water and carbon dioxide, using ...

starch Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage. Worldwide, it is the most common carbohydrate in human diets ...

caffeine Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is mainly used recreationally as a cognitive enhancer, increasing alertness and attentional performance. Caffeine acts by blocking binding of adenosine t ...

lidocaine Lidocaine, also known as lignocaine and sold under the brand name Xylocaine among others, is a local anesthetic of the amino amide type. It is also used to treat ventricular tachycardia. When used for local anaesthesia or in nerve blocks, lidoca ...

benzocaine Benzocaine, sold under the brand name Orajel amongst others, is an ester local anesthetic commonly used as a topical pain reliever or in cough drops. It is the active ingredient in many over-the-counter anesthetic ointments such as products f ...

paracetamol Paracetamol, also known as acetaminophen, is a medication used to treat fever and mild to moderate pain. Common brand names include Tylenol and Panadol. At a standard dose, paracetamol only slightly decreases body temperature; it is inferior ...

amphetamine Amphetamine (contracted from alpha- methylphenethylamine) is a strong central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD), narcolepsy, and obesity. It is also commonly used ...

scopolamine Scopolamine, also known as hyoscine, or Devil's Breath, is a natural or synthetically produced tropane alkaloid and anticholinergic drug that is formally used as a medication for treating motion sickness and postoperative nausea and vomiting ...

and

strychnine Strychnine (, , US chiefly ) is a highly toxic, colorless, bitter, crystalline alkaloid used as a pesticide, particularly for killing small vertebrates such as birds and rodents. Strychnine, when inhaled, swallowed, or absorbed through the eye ...

. *Smoking problems: Any

route of administration A route of administration in pharmacology and toxicology is the way by which a medication, drug, fluid, poison, or other substance is taken into the body. Routes of administration are generally classified by the location at which the substance i ...

poses its own set of health risks; in the case of crack cocaine, smoking tends to be more harmful than other routes. Crack users tend to smoke the drug because that has a higher

bioavailability In pharmacology, bioavailability is a subcategory of absorption and is the fraction (%) of an administered drug that reaches the systemic circulation. By definition, when a medication is administered intravenously, its bioavailability is 100%. H ...

than other routes typically used for drugs of abuse such as

Insufflation In religious and magical practice, insufflation and exsufflation are ritual acts of blowing, breathing, hissing, or puffing that signify variously expulsion or renunciation of evil or of the devil (the Evil One), or infilling or blessing with goo ...

. Crack has a melting point of around , and the smoke does not remain potent for long. Therefore, crack pipes are generally very short, to minimize the time between evaporating and ingestion (thereby minimizing loss of potency). Having a very hot pipe pressed against the lips often causes cracked and blistered lips, colloquially known as "crack lip". The use of "convenience store crack pipes"—glass tubes which originally contained small artificial roses—may contribute to this condition. These 4-inch (10-cm) pipes are not durable and will quickly develop breaks; users may continue to use the pipe even though it has been broken to a shorter length. The hot pipe might burn the lips, tongue, or fingers, especially when passed between people who take hits in rapid succession, causing the short pipe to reach higher temperatures than if used by one person alone. *Pure or large doses: Because the quality of crack can vary greatly, some people might smoke larger amounts of diluted crack, unaware that a similar amount of a new batch of purer crack could cause an overdose. This can trigger heart problems or cause unconsciousness. *Pathogens on pipes: When pipes are shared, bacteria or viruses can be transferred from person to person. Crack cocaine causes

DNA damage DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In human cells, both normal metabolic activities and environmental factors such as radiation can cause DNA da ...

in multiple organs of rats and mice.

Crack lung

In crack users, acute respiratory symptoms have been reported, sometimes termed "crack lung". Symptoms include fever,

coughing up blood Hemoptysis is the coughing up of blood or blood-stained mucus from the bronchi, larynx, trachea, or lungs. In other words, it is the airway bleeding. This can occur with lung cancer, infections such as tuberculosis, bronchitis, or pneumonia, a ...

and difficulty breathing. In the 48-hour period after use, people with these symptoms have also had associated radiographic findings on chest X-ray of fluid in the lungs (pulmonary edema),

interstitial pneumonia Interstitial lung disease (ILD), or diffuse parenchymal lung disease (DPLD), is a group of respiratory diseases affecting the interstitium (the tissue and space around the alveoli (air sacs)) of the lungs. It concerns alveolar epithelium, pulmona ...

diffuse alveolar hemorrhage Pulmonary hemorrhage (or pulmonary haemorrhage) is an acute bleeding from the lung, from the upper respiratory tract and the trachea, and the pulmonary alveoli. When evident clinically, the condition is usually massive.eosinophil Eosinophils, sometimes called eosinophiles or, less commonly, acidophils, are a variety of white blood cells (WBCs) and one of the immune system components responsible for combating multicellular parasites and certain infections in vertebrates. A ...

infiltration.

Psychological

Stimulant drug abuse (particularly

and cocaine) can lead to

delusional parasitosis Delusional parasitosis (DP) is a mental disorder in which individuals have a persistent belief that they are infested with living or nonliving pathogens such as parasites, insects, or bugs, when no such infestation is present. They usually report ...

(aka Ekbom's Syndrome: a mistaken belief they are infested with parasites). For example, excessive cocaine use can lead to

formication Formication is the sensation resembling that of small insects crawling on (or under) the skin when nothing is actually there. It is one specific form of a set of sensations known as paresthesias, which also include the more common prickling, tin ...

, nicknamed "cocaine bugs" or "coke bugs", where the affected people believe they have, or feel, parasites crawling under their skin (similar delusions may also be associated with high fever or in connection with

alcohol withdrawal Alcohol withdrawal syndrome (AWS) is a set of symptoms that can occur following a reduction in alcohol use after a period of excessive use. Symptoms typically include anxiety, shakiness, sweating, vomiting, fast heart rate, and a mild fever. M ...

, sometimes accompanied by visual hallucinations of insects—see ''

delirium tremens Delirium tremens (DTs) is a rapid onset of confusion usually caused by withdrawal from alcohol. When it occurs, it is often three days into the withdrawal symptoms and lasts for two to three days. Physical effects may include shaking, shiver ...

''). "Delusional Parasitosis", The Bohart Museum of

Entomology Entomology () is the science, scientific study of insects, a branch of zoology. In the past the term "insect" was less specific, and historically the definition of entomology would also include the study of animals in other arthropod groups, such ...

, 2005, webpage:
UCDavis-delusional
People experiencing these hallucinations might scratch themselves to the extent of serious skin damage and bleeding, especially when they are delirious. Paranoia and anxiety are among the most common psychological symptoms of crack cocaine use. Psychosis is more closely associated with smoking crack cocaine than intranasal and intravenous use.

Pregnancy and nursing

''Crack baby'' is a term for a child born to a mother who used crack cocaine during her pregnancy. The threat that cocaine use during

pregnancy Pregnancy is the time during which one or more offspring develops ( gestates) inside a woman's uterus (womb). A multiple pregnancy involves more than one offspring, such as with twins. Pregnancy usually occurs by sexual intercourse, but ca ...

poses to the

fetus A fetus or foetus (; plural fetuses, feti, foetuses, or foeti) is the unborn offspring that develops from an animal embryo. Following embryonic development the fetal stage of development takes place. In human prenatal development, fetal deve ...

is now considered exaggerated. Studies show that prenatal cocaine exposure (independent of other effects such as, for example, alcohol, tobacco, or physical environment) has no appreciable effect on childhood growth and development. However, the official opinion of the

National Institute on Drug Abuse The National Institute on Drug Abuse (NIDA) is a United States federal government research institute whose mission is to "advance science on the causes and consequences of drug use and addiction and to apply that knowledge to improve individual a ...

of the United States warns about health risks while cautioning against stereotyping: There are also warnings about the threat of

breastfeeding Breastfeeding, or nursing, is the process by which human breast milk is fed to a child. Breast milk may be from the breast, or may be expressed by hand or pumped and fed to the infant. The World Health Organization (WHO) recommends that br ...

: The

March of Dimes March of Dimes is a United States nonprofit organization that works to improve the health of mothers and babies. The organization was founded by President Franklin D. Roosevelt in 1938, as the National Foundation for Infantile Paralysis, to comba ...

said "it is likely that cocaine will reach the baby through breast milk," and advises the following regarding cocaine use during pregnancy:

Reinforcement disorders

Tolerance

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 might also become more sensitive (

drug sensitization Reverse tolerance or drug sensitization is a pharmacological phenomenon describing subjects' increased reaction (positive or negative) to a drug following its repeated use. Not all drugs are subject to reverse tolerance. This is the opposite of d ...

) to cocaine's local anesthetic (painkilling) and convulsant (seizure-inducing) effects, without increasing the dose taken; this increased sensitivity ''may'' explain some deaths occurring after apparent low doses of cocaine.

Addiction

Crack cocaine is popularly thought to be the most addictive form of cocaine. However, this claim has been contested: Morgan and Zimmer wrote that available data indicated that "smoking cocaine by itself does not increase markedly the likelihood of dependence ... The claim that cocaine is much more addictive when smoked must be reexamined." They argued that cocaine users who are already prone to abuse are most likely to "move toward a more efficient mode of ingestion" (that is, smoking). The intense desire to recapture the initial high is what is so addictive for many users. On the other hand, Reinarman et al. wrote that the nature of crack addiction depends on the social context in which it is used and the psychological characteristics of users, pointing out that many heavy crack users can go for days or weeks without using the drug.

Overdose

A typical response among users is to have another hit of the drug; however, the levels of

in the brain take a long time to replenish themselves, and each hit taken in rapid succession leads to progressively less intense highs. Nonetheless, a person might binge for 3 or more days without sleep, while inhaling hits from a pipe. 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 Paranoia is an instinct or thought process that is believed to be heavily influenced by anxiety or fear, often to the point of delusion and irrationality. Paranoid thinking typically includes persecutory beliefs, or beliefs of conspiracy concer ...

. This may result in full-blown paranoid psychosis, in which the individual loses touch with reality and experiences auditory hallucinations. Large amounts of crack cocaine (several hundred milligrams or more) intensify the user's high, but may also lead to bizarre, erratic, and violent behavior. Large amounts can induce tremors,

vertigo Vertigo is a condition where a person has the sensation of movement or of surrounding objects moving when they are not. Often it feels like a spinning or swaying movement. This may be associated with nausea, vomiting, sweating, or difficulties w ...

, muscle twitches,

, or, with repeated doses, a toxic reaction closely resembling

poisoning.

Society and culture

Synonyms

Synonyms used to refer to crack cocaine include ''atari''; ''base''; ''bazooka''; ''beamers''; ''beemers''; ''bebe''; ''bee-bee''; ''berry''; ''bing''; ''bolo''; ''bomb''; ''boulder''; ''boulders''; ''butter''; ''caine''; ''cane''; ''Casper''; ''Casper the ghost''; ''cavvy''; ''chemical''; ''chewies''; ''cloud''; ''cloud nine''; ''crills''; ''crunch and munch''; ''dip''; ''famous dimes''; ''fan''; ''fish scale''; ''fries''; ''fry''; ''glo''; ''golfball''; ''gravel''; ''grit''; ''hail''; ''hamburger''; ''helper''; ''hubba''; ''ice cube''; ''kangaroo''; ''kibbles and bits''; ''kibbles''; ''krills''; ''lightem''; ''paste''; ''patico''; ''pebbles''; ''pee wee''; ''pony''; ''raw''; ''ready''; ''ready rocks''; ''redi rocks''; ''roca''; ''rock''; ''rooster''; ''rox''; ''Roxanne''; ''scud''; ''Scotty''; ''scramble''; ''scruples''; ''seven-up''; ''sherm''; ''sherms''; ''sleet''; ''snowballs''; ''stones''; ''teeth''; ''tension''; ''top gun''; ''tweak''; ''ultimate''; ''wash''; ''white cloud''; ''work''; ''yahoo''; ''yale''; ''yay''; ''yayoo''; ''yeah-O''; ''yeyo''; ''yeo''; and ''yuck''.

Drug combinations

Crack cocaine may be combined with

("croak");

tobacco Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the ...

("coolie");

marijuana Cannabis, also known as marijuana among other names, is a psychoactive drug from the cannabis plant. Native to Central or South Asia, the cannabis plant has been used as a drug for both recreational and entheogenic purposes and in various tra ...

("buddha"; "caviar"; "chronic"; "cocoa puffs"; "fry daddy"; "gimmie"; "gremmie"; "juice"; "primo"; "torpedo"; "turbo"; "woolie"; "woola");

heroin Heroin, also known as diacetylmorphine and diamorphine among other names, is a potent opioid mainly used as a recreational drug for its euphoric effects. Medical grade diamorphine is used as a pure hydrochloride salt. Various white and brow ...

("moon rock"); and

phencyclidine Phencyclidine or phenylcyclohexyl piperidine (PCP), also known as angel dust among other names, is a dissociative anesthetic mainly used recreationally for its significant mind-altering effects. PCP may cause hallucinations, distorted perceptio ...

("clicker"; "p-funk"; "spacebase").

Consumption

Crack smoking ("hitting the pipe"; "puffing"; "beaming up (to Scotty)") is commonly performed with utensils such as pipes ("bowl"; "devil's dick"; "glass dick"; "horn"; "Uzi"); improvised pipes made from a plastic bottle ("Masarati"); water pipes ("bong"; "hubbly-bubbly"); and laboratory pipettes ("demo").

Legal status

Publicizing Dangers of Crack Cocaine (078) (7395870920)

Cocaine is listed as a Schedule I drug in the

United Nations The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and international security, security, develop friendly relations among nations, achieve international cooperation, and be ...

1961

Single Convention on Narcotic Drugs The Single Convention on Narcotic Drugs, 1961 (Single Convention, 1961 Convention, or C61) is an international treaty that controls activities (cultivation, production, supply, trade, transport) of specific narcotic drugs and lays down a syst ...

, making it illegal for non-state-sanctioned production, manufacture, export, import, distribution, trade, use and possession. In most states (except in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

) crack falls under the same category as

Australia

In Australia, crack falls under the same category as cocaine, which is listed as a Schedule 8 controlled drug, indicating that any substances and preparations for therapeutic use under this category have a high potential for abuse and addiction. It is permitted for some medical use but is otherwise outlawed.

Canada

As a Schedule I substance under the

Controlled Drugs and Substances Act The ''Controlled Drugs and Substances Act'' (french: Loi réglementant certaines drogues et autres substances) (the ''Act'') is Canada's federal drug control statute. Passed in 1996 under Prime Minister Jean Chrétien's government, it repeals ...

, crack is not differentiated from cocaine and other

coca Coca is any of the four cultivated plants in the family Erythroxylaceae, native to western South America. Coca is known worldwide for its psychoactive alkaloid, cocaine. The plant is grown as a cash crop in the Argentine Northwest, Bolivia, Al ...

products. However, the court may weigh the socio-economic factors of crack usage in sentencing. As a guideline, Schedule I drugs carry a maximum 7-year prison sentence for possession for an indictable offense and up to life imprisonment for trafficking and production. A

summary conviction A summary offence or petty offence is a violation in some common law jurisdictions that can be proceeded against summarily, without the right to a jury trial and/or indictment (required for an indictable offence). Canada In Canada, summary offenc ...

on possession carries a $1000–$2000 fine and/or 6 months to a year imprisonment.

United States

In the United States, cocaine is a Schedule II drug under the

Controlled Substances Act The Controlled Substances Act (CSA) is the statute establishing federal government of the United States, federal drug policy of the United States, U.S. drug policy under which the manufacture, importation, possession, use, and distribution of ...

, indicating that it has a high abuse potential but also carries a medicinal purpose. Under the Controlled Substances Act, crack and cocaine are considered the same drug. The

Anti-Drug Abuse Act of 1986 The Anti-Drug Abuse Act of 1986 was a law pertaining to the War on Drugs passed by the United States Congress, U.S. Congress and signed into law by U.S. President Ronald Reagan. Among other things, they changed the system of federal supervised re ...

increased penalties for crack cocaine possession and usage. It mandated a

mandatory minimum sentence Mandatory sentencing requires that offenders serve a predefined term for certain crimes, commonly serious and violent offenses. Judges are bound by law; these sentences are produced through the legislature, not the judicial system. They are inst ...

of five years without

parole Parole (also known as provisional release or supervised release) is a form of early release of a prison inmate where the prisoner agrees to abide by certain behavioral conditions, including checking-in with their designated parole officers, or ...

for possession of five grams of crack; to receive the same sentence with powder cocaine one had to have 500 grams. This sentencing disparity was reduced from to by the

Fair Sentencing Act The Fair Sentencing Act of 2010 () was an Act of Congress that was signed into federal law by United States President Barack Obama on August 3, 2010 that reduces the disparity between the amount of crack cocaine and powder cocaine needed to tri ...

of 2010.

Europe

In the United Kingdom, crack is a

Class A drug These drugs are known in the UK as ''controlled drugs'', because this is the term by which the act itself refers to them. In more general terms, however, many of these drugs are also controlled by the Medicines Act 1968, there are many other dru ...

under the

Misuse of Drugs Act 1971 The Misuse of Drugs Act 1971 is an Act of the Parliament of the United Kingdom. It represents action in line with treaty commitments under the Single Convention on Narcotic Drugs, the Convention on Psychotropic Substances, and the United Nation ...

. In the

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

it is a List 1 drug of the

Opium Law The Opium Law (or ''Opiumwet'' in Dutch) is the section of the Dutch law which covers nearly all psychotropic drugs. Origin and history In 1912, the First International Opium Conference took place in The Hague, where agreements were made about ...

Political scandals

Rob Ford Robert Bruce Ford (May 28, 1969 – March 22, 2016) was a Canadian politician and businessman who served as the 64th mayor of Toronto from 2010 to 2014. Before and after his term as mayor, Ford was a city councillor representing Ward 2 Etobi ...

, the 64th mayor of

Toronto Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the ancho ...

, was filmed smoking crack while he was in office.

Marion Barry Marion Shepilov Barry (born Marion Barry Jr.; March 6, 1936 – November 23, 2014) was an American politician who served as the second and fourth mayor of the District of Columbia from 1979 to 1991 and 1995 to 1999. A Democrat, Barry had served ...

, Mayor of

Washington D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, Na ...

, was filmed smoking crack in 1990 in a sting operation.