RESEARCH STARTER

Designer drugs

Designer drugs are synthetic substances created to mimic the effects of controlled substances while evading legal restrictions. The emergence of designer drugs dates back to the 1970s when clandestine chemists began modifying existing drugs after the implementation of the Controlled Substances Act. These drugs gained popularity in nightlife cultures, particularly in clubs and raves, where they were often used to enhance social experiences. Common examples include methamphetamine and MDMA (ecstasy), both known for their stimulant and euphoric effects, as well as hallucinogens like LSD and PCP.

While some designer drugs were initially intended for medical use, many were developed solely for recreational purposes. Unfortunately, the production of these drugs has led to significant public health concerns, including addiction and overdose fatalities. As authorities have sought to regulate these substances, manufacturers continually adapt by creating new compounds, resulting in a dynamic and often dangerous drug market. Despite ongoing efforts to combat their prevalence, designer drugs continue to pose serious risks due to their unpredictable effects, high potency, and potential for severe health consequences.

Full Article

  • ALSO KNOWN AS: Club drugs; party drugs; recreational drugs

DEFINITION: Designer drugs are illegal synthetic analogs of controlled substances that possess similar pharmacological qualities. Designer drugs encompass a wide range of potent, unpredictable, and potentially deadly stimulants, depressants, hallucinogens, and opiates. Common designer drugs include methamphetamine, ecstasy, China white, lysergic acid diethylamide (LSD), phencyclidine (PCP), ketamine, and gamma hydroxybutyric acid (GHB).

History of Use

Designer drugs became popular in the 1970s as a way to bypass existing regulations on controlled substances. After the Controlled Substances Act (1970) restricted the availability of illicit substances, clandestine chemists began modifying and manufacturing synthetic alternatives with similar pharmacological effects. Designer-drug production and trafficking became widespread, producing cheaper and stronger alternatives.

Some designer drugs were originally intended for medical use; others were created strictly for recreational use. The first designer drugs included hallucinogens and synthetic substitutes for heroin and amphetamine.

By the 1980s, many designer drugs became known as club drugs and gained popularity among young people at underground dance parties, bars, and nightclubs called raves. These raves became the place to sell and use club drugs, such as ecstasy, to enhance the club experience. The combining of designer drugs emerged as a common practice to enhance euphoric effects. Mixing ketamine, a hallucinogenic tranquilizer, with the stimulant methamphetamine became known as trail mix, while using ecstasy with LSD was called candy flipping.

Designer drugs remained legal until the 1980s, when their psychological and physical hazards became fully recognized. The drugs caused numerous overdose deaths worldwide. By 1986, the widespread manufacture and misuse of designer drugs prompted legislators in the United States to modify the Controlled Substances Act and add the Federal Analog Act to include all chemically similar substances and possible derivatives as controlled substances.

Designer drugs make up a substantial portion of the illegal drug market. New designer drugs, such as synthetic opioids (nitazenes), synthetic cannabinoids (spice, K2, or hexahydrocannabinol ), cathinones (bath salts), sedatives (xylazine and bromazolam), and psychoactive substances, are continually being developed, marketed, and sold by illegal chemists. Authorities estimated in the early 2020s that a dozen or more new designer drugs were emerging each month. Despite efforts to curb designer drug production, their abuse and popularity remained a concern.

In the 2020s, researchers began developing an artificial intelligence system to predict the next designer drug to be produced. However, once authorities gain control of a designer drug and make it illegal, chemists working illegally devise new compounds, usually by modifying known molecules. The system, called DarkNPS, is based on a recurrent neural network that can accurately predict NPS (novel psychoactive substances) by first identifying the structures in existing designer drugs. Predicting the next designer drug before it appears will help authorities reduce drug use in the future by making the drugs illegal faster.

Common Designer Drugs

Common designer drugs include hallucinogens and depressants, as well as synthetic substitutes for heroin and amphetamine. Among the most popular amphetamines or speed analogs are methamphetamine and methylenedioxymethamphetamine (MDMA, or ecstasy).

Methamphetamine, known variously as meth, crystal, ice, speed, and crank, is one of the most addictive designer drugs available. It is commonly used at clubs for its intense rush of euphoria. By the 1960s, methamphetamine abuse had reached epidemic proportions.

MDMA has both stimulant and hallucinogenic properties and is related to amphetamine and mescaline. Ecstasy is a party drug designed to produce a rush of euphoria followed by heightened sociability and hallucinations.

A popular synthetic heroin alternative is China white, which encompasses a variety of fentanyl derivatives (painkillers with opiate-like properties similar to but more potent than heroin). China white gained popularity as a recreational drug among heroin users as a cheaper alternative.

Hallucinogenic designer drugs include LSD and PCP. LSD, or acid, is the most widely known of the hallucinogenic drugs. It is an extremely potent semisynthetic psychedelic drug derived from lysergic acid. PCP, or angel dust, derivatives were popular in the 1970s. PCP, originally developed as a surgical anesthetic, is a dangerous and unpredictable hallucinogen; users typically experience horrifying and violent hallucinations.

Several designer drugs, such as ketamine and GHB, exhibit depressant and hallucinogenic qualities. Ketamine is a tranquilizer with powerful hallucinogenic properties that is known to induce out-of-body and dreamlike states. GHB, known as cherry meth and liquid ecstasy, was initially used as a bodybuilding agent to stimulate muscle growth. GHB is a popular recreational drug at nightclubs and is sometimes used as a “date rape” drug.

Fentanyl is a synthetic drug that is much more powerful than heroin. In some areas of the United States, it has taken the place of heroin. It is also mixed with stimulants such as cocaine and methamphetamine. Such combinations are called speedballs and goofballs. Public health authorities have also identified nitazenes, a family of novel synthetic opioids that are more powerful than fentanyl. The World Health Organization (WHO) and the United Nations Office on Drugs and Crime (UNODC) identified several concerning nitazenes, including protonitazepyne, metonitazepyne, etonitazepipne, and N-desethyl etonitazene . In 2025, the US government passed the HALT Fentanyl Act (Halt All Lethal Trafficking of Fentanyl Act) to classify all fentanyl-related substances as Schedule I controlled substances.

Effects and Potential Risks

Designer drugs are often lethal substitutes; they are mixed with unknown impurities and are many times more potent than the original substance they mimic. Designer drugs can act as stimulants, depressants, hallucinogens, and painkillers (opiates).

Designer drugs exhibit different effects at varying doses. Stimulants like methamphetamines increase brain activity by increasing the neurotransmitter dopamine, producing euphoria, excitement, and increased energy. Depressants, such as GHB, slow the central nervous system through endorphin-like mechanisms, inducing relaxation, contentment, and sedation. Hallucinogens, such as LSD, bind to serotonin receptors in the brain, producing sensory distortions. Opiates, including China white, act through opioid receptors to alter pain responses. Although the effects of each designer drug are different, all can be lethal.

Designer drugs are abused for their intoxicating effects. The short-term effects of designer drugs include increased euphoria, excitement, and energy. Negative short-term effects include nausea, vomiting, anxiety, depression, confusion, irritability, amnesia, dilated pupils, impaired speech, visual disturbances, hallucinations, behavioral changes, disturbed sleep, muscle cramps, panic attacks, shaking, clenched teeth, drooling, chills, increased perspiration, increased heart rate, hypertension, and sudden death.

Long-term designer drug use can lead to anorexia, dehydration, social withdrawal, anhedonia (inability to experience pleasure), violent behavior, suicidal behavior, paranoia, psychosis, stroke, seizures, convulsions, paralysis, coma, lung disease, kidney, heart, and respiratory failure, blood vessel damage, permanent brain damage, and death.

Most designer drugs are highly addictive; physical and psychological tolerance and dependence develop quickly. Those who use these substances crave larger doses of the drug to achieve the original high. Mixing designer drugs with other substances increases the risk of accidental overdose and death.


Bibliography

Clayton, Lawrence. Designer Drugs. Rosen, 1998.

Crotty, Jim. "The Next Generation of Illicit Drugs? Think 'Synthetic'." Stat, 5 Aug. 2022, www.statnews.com/2022/08/05/synthetic-drugs-fuel-next-wave-illicit-drug-use. Accessed 20 Oct. 2025.

Dasgupta, Amitava. Therapeutic Drug Monitoring: Newer Drugs and Biomarkers. 2nd ed., Academic Press, 2024.

“Designer Drugs: Bath Salts.” United States Drug Enforcement Administration, www.dea.gov/factsheets/bath-salts. Accessed 20 Oct. 2025.

"Designer Drugs." United States Drug Enforcement Administration, www.dea.gov/taxonomy/term/341. Accessed 20 Oct. 2025.

Gerona, Roy. Designer Drugs: Chemistry, Analysis, Regulation, Toxicology, Epidemiology & Legislation of New Psychoactive Substances. Elsevier, 2024.

Goldberg, Raymond. Drugs across the Spectrum. 9th ed., Wadsworth, 2024.

Hanson, Glen R., et al. Drugs and Society. 15th ed., Jones, 2025.

Kowalska, Teresa, et al. Chromatographic Techniques in the Forensic Analysis of Designer Drugs. Taylor & Francis/CRC Press, 2018.

Metcalfe, Tom. "'Minority Report'-esque Al Predicts New Designer Drugs before They're Made." Chemistry World, 18 Nov. 2021, www.chemistryworld.com/news/minority-report-esque-ai-predicts-new-designer-drugs-before-theyre-made/4014779.article. Accessed 20 Oct. 2025.

"New ‘Designer Drugs’ Pose Growing Threat to Road Safety in the US." Frontiers, 25 June 2025, www.frontiersin.org/news/2025/06/25/frontiers-toxicology-designer-drugs-driving-under-influence-of-drugs. Accessed 20 Oct. 2025.

Pesce, Amadeo J., and Kevin Krock. "Designer Drugs." Laboratory Medicine, vol. 54, no. 6, 2023, pp. 553-54, doi:10.1093/labmed/lmad087. Accessed 20 Oct. 2025.

"What Are Designer Drugs?" American Addiction Centers, 8 Nov. 2024, americanaddictioncenters.org/designer-drugs-addiction. Accessed 20 Oct. 2025.

Full Article

  • ALSO KNOWN AS: Club drugs; party drugs; recreational drugs

DEFINITION: Designer drugs are illegal synthetic analogs of controlled substances that possess similar pharmacological qualities. Designer drugs encompass a wide range of potent, unpredictable, and potentially deadly stimulants, depressants, hallucinogens, and opiates. Common designer drugs include methamphetamine, ecstasy, China white, lysergic acid diethylamide (LSD), phencyclidine (PCP), ketamine, and gamma hydroxybutyric acid (GHB).

History of Use

Designer drugs became popular in the 1970s as a way to bypass existing regulations on controlled substances. After the Controlled Substances Act (1970) restricted the availability of illicit substances, clandestine chemists began modifying and manufacturing synthetic alternatives with similar pharmacological effects. Designer-drug production and trafficking became widespread, producing cheaper and stronger alternatives.

Some designer drugs were originally intended for medical use; others were created strictly for recreational use. The first designer drugs included hallucinogens and synthetic substitutes for heroin and amphetamine.

By the 1980s, many designer drugs became known as club drugs and gained popularity among young people at underground dance parties, bars, and nightclubs called raves. These raves became the place to sell and use club drugs, such as ecstasy, to enhance the club experience. The combining of designer drugs emerged as a common practice to enhance euphoric effects. Mixing ketamine, a hallucinogenic tranquilizer, with the stimulant methamphetamine became known as trail mix, while using ecstasy with LSD was called candy flipping.

Designer drugs remained legal until the 1980s, when their psychological and physical hazards became fully recognized. The drugs caused numerous overdose deaths worldwide. By 1986, the widespread manufacture and misuse of designer drugs prompted legislators in the United States to modify the Controlled Substances Act and add the Federal Analog Act to include all chemically similar substances and possible derivatives as controlled substances.

Designer drugs make up a substantial portion of the illegal drug market. New designer drugs, such as synthetic opioids (nitazenes), synthetic cannabinoids (spice, K2, or hexahydrocannabinol ), cathinones (bath salts), sedatives (xylazine and bromazolam), and psychoactive substances, are continually being developed, marketed, and sold by illegal chemists. Authorities estimated in the early 2020s that a dozen or more new designer drugs were emerging each month. Despite efforts to curb designer drug production, their abuse and popularity remained a concern.

In the 2020s, researchers began developing an artificial intelligence system to predict the next designer drug to be produced. However, once authorities gain control of a designer drug and make it illegal, chemists working illegally devise new compounds, usually by modifying known molecules. The system, called DarkNPS, is based on a recurrent neural network that can accurately predict NPS (novel psychoactive substances) by first identifying the structures in existing designer drugs. Predicting the next designer drug before it appears will help authorities reduce drug use in the future by making the drugs illegal faster.

Common Designer Drugs

Common designer drugs include hallucinogens and depressants, as well as synthetic substitutes for heroin and amphetamine. Among the most popular amphetamines or speed analogs are methamphetamine and methylenedioxymethamphetamine (MDMA, or ecstasy).

Methamphetamine, known variously as meth, crystal, ice, speed, and crank, is one of the most addictive designer drugs available. It is commonly used at clubs for its intense rush of euphoria. By the 1960s, methamphetamine abuse had reached epidemic proportions.

MDMA has both stimulant and hallucinogenic properties and is related to amphetamine and mescaline. Ecstasy is a party drug designed to produce a rush of euphoria followed by heightened sociability and hallucinations.

A popular synthetic heroin alternative is China white, which encompasses a variety of fentanyl derivatives (painkillers with opiate-like properties similar to but more potent than heroin). China white gained popularity as a recreational drug among heroin users as a cheaper alternative.

Hallucinogenic designer drugs include LSD and PCP. LSD, or acid, is the most widely known of the hallucinogenic drugs. It is an extremely potent semisynthetic psychedelic drug derived from lysergic acid. PCP, or angel dust, derivatives were popular in the 1970s. PCP, originally developed as a surgical anesthetic, is a dangerous and unpredictable hallucinogen; users typically experience horrifying and violent hallucinations.

Several designer drugs, such as ketamine and GHB, exhibit depressant and hallucinogenic qualities. Ketamine is a tranquilizer with powerful hallucinogenic properties that is known to induce out-of-body and dreamlike states. GHB, known as cherry meth and liquid ecstasy, was initially used as a bodybuilding agent to stimulate muscle growth. GHB is a popular recreational drug at nightclubs and is sometimes used as a “date rape” drug.

Fentanyl is a synthetic drug that is much more powerful than heroin. In some areas of the United States, it has taken the place of heroin. It is also mixed with stimulants such as cocaine and methamphetamine. Such combinations are called speedballs and goofballs. Public health authorities have also identified nitazenes, a family of novel synthetic opioids that are more powerful than fentanyl. The World Health Organization (WHO) and the United Nations Office on Drugs and Crime (UNODC) identified several concerning nitazenes, including protonitazepyne, metonitazepyne, etonitazepipne, and N-desethyl etonitazene . In 2025, the US government passed the HALT Fentanyl Act (Halt All Lethal Trafficking of Fentanyl Act) to classify all fentanyl-related substances as Schedule I controlled substances.

Effects and Potential Risks

Designer drugs are often lethal substitutes; they are mixed with unknown impurities and are many times more potent than the original substance they mimic. Designer drugs can act as stimulants, depressants, hallucinogens, and painkillers (opiates).

Designer drugs exhibit different effects at varying doses. Stimulants like methamphetamines increase brain activity by increasing the neurotransmitter dopamine, producing euphoria, excitement, and increased energy. Depressants, such as GHB, slow the central nervous system through endorphin-like mechanisms, inducing relaxation, contentment, and sedation. Hallucinogens, such as LSD, bind to serotonin receptors in the brain, producing sensory distortions. Opiates, including China white, act through opioid receptors to alter pain responses. Although the effects of each designer drug are different, all can be lethal.

Designer drugs are abused for their intoxicating effects. The short-term effects of designer drugs include increased euphoria, excitement, and energy. Negative short-term effects include nausea, vomiting, anxiety, depression, confusion, irritability, amnesia, dilated pupils, impaired speech, visual disturbances, hallucinations, behavioral changes, disturbed sleep, muscle cramps, panic attacks, shaking, clenched teeth, drooling, chills, increased perspiration, increased heart rate, hypertension, and sudden death.

Long-term designer drug use can lead to anorexia, dehydration, social withdrawal, anhedonia (inability to experience pleasure), violent behavior, suicidal behavior, paranoia, psychosis, stroke, seizures, convulsions, paralysis, coma, lung disease, kidney, heart, and respiratory failure, blood vessel damage, permanent brain damage, and death.

Most designer drugs are highly addictive; physical and psychological tolerance and dependence develop quickly. Those who use these substances crave larger doses of the drug to achieve the original high. Mixing designer drugs with other substances increases the risk of accidental overdose and death.


Bibliography

Clayton, Lawrence. Designer Drugs. Rosen, 1998.

Crotty, Jim. "The Next Generation of Illicit Drugs? Think 'Synthetic'." Stat, 5 Aug. 2022, www.statnews.com/2022/08/05/synthetic-drugs-fuel-next-wave-illicit-drug-use. Accessed 20 Oct. 2025.

Dasgupta, Amitava. Therapeutic Drug Monitoring: Newer Drugs and Biomarkers. 2nd ed., Academic Press, 2024.

“Designer Drugs: Bath Salts.” United States Drug Enforcement Administration, www.dea.gov/factsheets/bath-salts. Accessed 20 Oct. 2025.

"Designer Drugs." United States Drug Enforcement Administration, www.dea.gov/taxonomy/term/341. Accessed 20 Oct. 2025.

Gerona, Roy. Designer Drugs: Chemistry, Analysis, Regulation, Toxicology, Epidemiology & Legislation of New Psychoactive Substances. Elsevier, 2024.

Goldberg, Raymond. Drugs across the Spectrum. 9th ed., Wadsworth, 2024.

Hanson, Glen R., et al. Drugs and Society. 15th ed., Jones, 2025.

Kowalska, Teresa, et al. Chromatographic Techniques in the Forensic Analysis of Designer Drugs. Taylor & Francis/CRC Press, 2018.

Metcalfe, Tom. "'Minority Report'-esque Al Predicts New Designer Drugs before They're Made." Chemistry World, 18 Nov. 2021, www.chemistryworld.com/news/minority-report-esque-ai-predicts-new-designer-drugs-before-theyre-made/4014779.article. Accessed 20 Oct. 2025.

"New ‘Designer Drugs’ Pose Growing Threat to Road Safety in the US." Frontiers, 25 June 2025, www.frontiersin.org/news/2025/06/25/frontiers-toxicology-designer-drugs-driving-under-influence-of-drugs. Accessed 20 Oct. 2025.

Pesce, Amadeo J., and Kevin Krock. "Designer Drugs." Laboratory Medicine, vol. 54, no. 6, 2023, pp. 553-54, doi:10.1093/labmed/lmad087. Accessed 20 Oct. 2025.

"What Are Designer Drugs?" American Addiction Centers, 8 Nov. 2024, americanaddictioncenters.org/designer-drugs-addiction. Accessed 20 Oct. 2025.

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