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Related Concept Videos

CNS Stimulants: Psychedelic Agents01:22

CNS Stimulants: Psychedelic Agents

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Hallucinogens, also known as psychedelic drugs, are a class of substances known for their ability to alter perception, cognition, and emotions. Despite their profound effects on the mind, these drugs are non-addictive, setting them apart from many other abused substances. The mechanism of action of these drugs lies in their impact on the 5-HT2A receptor in the brain. Upon activation, this receptor couples to Gq-type G proteins, triggering a cascade that releases intracellular calcium. This...
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Hallucinogens and Psychedelics01:27

Hallucinogens and Psychedelics

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Hallucinogens are psychoactive substances that profoundly alter perceptual experiences, generating unreal visual and sensory images. Often referred to as psychedelic drugs — a term derived from the Greek words "psyche" (mind) and "delos" (revealing) — these substances include marijuana and lysergic acid diethylamide (LSD), among others. These drugs vary in intensity and effects.
Marijuana, derived from the dried leaves and flowers of the hemp plant, contains...
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An Overview of Psychoactive Drugs01:28

An Overview of Psychoactive Drugs

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Psychoactive drugs impact brain function, influencing perception, mood, consciousness, cognition, and behavior. These substances are grouped based on their effects and the mechanisms by which they act.
Stimulants such as cocaine, amphetamines, and nicotine enhance brain activity, leading to increased alertness, attention, and energy. These drugs typically raise heart rate, blood pressure, and body temperature. While they can induce feelings of euphoria, their misuse can result in severe health...
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Stimulants01:29

Stimulants

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Stimulants are substances that enhance neural activity and elevate dopamine levels in the brain, leading to their highly addictive nature. These drugs include cocaine, amphetamines, MDMA, caffeine, and nicotine, each with distinct mechanisms of action and varied health implications.
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
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Adrenergic Agonists: Mixed-Action Agents01:28

Adrenergic Agonists: Mixed-Action Agents

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Mixed-action adrenergic agonists, like ephedrine and pseudoephedrine, directly and indirectly affect adrenergic receptors. These agents stimulate adrenoceptors and indirectly release stored neurotransmitters, amplifying the adrenergic response.
Ephedrine and pseudoephedrine lack a catecholamine group, making them less susceptible to degradation by metabolic enzymes. They have increased oral bioavailability and lipophilicity, resulting in a longer duration of action. Their response is reduced by...
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CNS Stimulants: Cocaine, Amphetamines and Cannabinoids01:24

CNS Stimulants: Cocaine, Amphetamines and Cannabinoids

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CNS stimulants, such as cocaine, amphetamines, and cannabinoids, have varying structures and mechanisms of action that lead to different therapeutic effects and side effects. Cocaine, with its molecular formula C17H21NO4, is a tropane alkaloid and a tertiary amino compound. It has two chemical forms: the hydrochloride salt and the "freebase." The former is in powder form, while the latter involves removing the hydrochloride salt to create a form that can be smoked. Cocaine exerts its...
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Related Experiment Video

Updated: Dec 28, 2025

Color Spot Test As a Presumptive Tool for the Rapid Detection of Synthetic Cathinones
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Mephedrone and MDMA: A comparative review.

Jessica Mead1, Andrew Parrott1

  • 1Department of Psychology, School of Human and Health Sciences, Swansea University, Swansea, Wales, United Kingdom.

Brain Research
|February 23, 2020
PubMed
Summary

Mephedrone and MDMA are party drugs with similar effects but shorter duration for mephedrone, leading to binge use. While MDMA research is extensive, mephedrone

Area of Science:

  • Neuroscience
  • Psychopharmacology
  • Toxicology

Background:

  • Mephedrone and MDMA are common party drugs.
  • Mephedrone is a newer substance compared to MDMA.
  • Both drugs are associated with adverse health effects.

Purpose of the Study:

  • Compare usage patterns and neuropsychobiological effects of mephedrone and MDMA.
  • Review existing research on the adverse effects of both substances.
  • Assess the neurotoxic potential and abuse liability of mephedrone versus MDMA.

Main Methods:

  • Literature review comparing existing studies on mephedrone and MDMA.
  • Analysis of reported usage patterns, psychoactive effects, and adverse health outcomes.
  • Evaluation of neurocognitive and psychobiological data.
Keywords:
DopamineEcstasyMDMAMephedroneNeurotoxicitySerotonin

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Main Results:

  • Mephedrone has a shorter duration of action than MDMA, promoting binge use.
  • Both drugs cause adverse health, psychiatric, and neurocognitive issues.
  • MDMA shows greater neurotoxic potential and long-term serotonergic damage compared to mephedrone, though mephedrone has higher abuse liability.

Conclusions:

  • Mephedrone's adverse effects may be less severe than MDMA's, but its higher abuse liability raises long-term concerns.
  • Limited research exists on mephedrone's long-term effects.
  • Further investigation into lifetime mephedrone users is needed to fully understand its neuropsychobiological impact.