Cocaine

Death is not dose-dependent in a simple linear fashion — cocaine blood levels cannot reliably predict toxicitysupported

Death is not dose related in most cases. pmid:16144174

Most cocaine fatalities occur in individuals with pre-existing cardiac structural changes from chronic use or genetic vulnerability (congenital long QT syndrome variants).partially supported

Lethal myocardial alterations include hypertrophy, fibrosis, and microangiopathy. Genetic causes such as congenital long QT syndrome may play a role. pmid:16144174

Severe cases produce coronary vasospasm, arrhythmias (including ventricular fibrillation), seizures, and stroke. Hyperthermia is a primary mechanism of death and can be lethal independently of cardiovascular effects; physical exertion during cocaine use substantially amplifies this risk.partially supported

Hyperthermia is primary effect of psychostimulant drugs, can be lethal. Dopamine receptor activation mediates cocaine-induced hyperthermia. pmid:8010552

Cocaine exerts cardiac toxicity through two mechanistically distinct and synergistic pathways:supported

Two basic mechanisms: sodium channel blockade and reuptake inhibition of catecholamines. pmid:1346509

Cocaine exerts cardiac toxicity through two mechanistically distinct and synergistic pathways:supported

Cocaine has two primary pharmacological properties affecting heart: local anesthetic (sodium and potassium channel blockade) and sympathomimetic (catecholamine uptake inhibition). Synergistic effects of adrenergic and local anesthetic properties elicit toxic cardiac actions. pmid:7612173

Claim in safety — inconclusiveinconclusiveworking →

Local anesthetic (Na⁺ channel blockade) mechanism: Slows cardiac depolarization → QRS widening, His-ventricular conduction delay → substrate for reentrant arrhythmias and ventricular fibrillation.supported

Two basic mechanisms: sodium channel blockade and reuptake inhibition of catecholamines... induce electrical abnormalities in the heart. pmid:1346509

Cocaine users carry a 7-fold elevated myocardial infarction risksupported

Frequent cocaine users have a seven-fold higher risk of myocardial infarction. s10741-020-09983-3

Documented cardiovascular complications include: coronary vasospasm and myocardial infarction, hypertensive crisis, aortic dissection, cardiac arrhythmias, sudden cardiac death, myocarditis, dilated cardiomyopathy, left ventricular hypertrophy, and endocarditispartially supported

Cardiovascular complications include hypertensive crises, aortic dissection, arrhythmias and sudden cardiac death, myocarditis, and dilated cardiomyopathy. s10741-020-09983-3

Documented cardiovascular complications include: coronary vasospasm and myocardial infarction, hypertensive crisis, aortic dissection, cardiac arrhythmias, sudden cardiac death, myocarditis, dilated cardiomyopathy, left ventricular hypertrophy, and endocarditispartially supported

Chronic use accelerates atherosclerosis, causes myocarditis, fibrosis, LV hypertrophy. Acute doses… reduce coronary caliber and coronary blood flow, induce electrical abnormalities. pmid:1346509

Chronic use accelerates coronary atherosclerosis.supported

Chronic use accelerates atherosclerosis, causes myocarditis, fibrosis, LV hypertrophy. pmid:1346509

Claim in safety — inconclusiveinconclusiveworking →

Smoked cocaine produces a spectrum of pulmonary complications: barotrauma (pneumothorax, pneumomediastinum), airway injury, asthma exacerbation, bronchiolitis obliterans with organizing pneumonia (BOOP), acute pulmonary edema, alveolar hemorrhage, pulmonary granulomatosis (from talc and other insoluble contaminants), interstitial pneumonitis and fibrosis, pulmonary hypertension, and pulmonary/septic emboli.supported

Systematic literature review on cocaine use and pulmonary complications including crack lung, barotrauma, alveolar hemorrhage, bronchiolitis obliterans, pulmonary hypertension, and pulmonary embolism. j.rmr.2019.11.641

Outcome is favorable when cocaine use is discontinued.supported

Outcome favorable when cocaine use stopped. j.rmr.2017.06.005

A subset of chronic intranasal cocaine users develop progressive necrotizing destruction of midline facial structures — nasal septum, turbinates, palate, sinuses — via vasoconstriction-mediated ischemia and an apparent autoimmune mechanism involving atypical ANCA antibodiessupported

CLAAS encompasses autoimmune phenomena including CIMDL, which can mimic ANCA-associated vasculitis due to overlapping clinical features and ANCA positivity. iid3.70215

A subset of chronic intranasal cocaine users develop progressive necrotizing destruction of midline facial structures — nasal septum, turbinates, palate, sinuses — via vasoconstriction-mediated ischemia and an apparent autoimmune mechanism involving atypical ANCA antibodiessupported

CIMDL is result of necrotizing inflammatory tissue response triggered by cocaine abuse in predisposed patients. Atypical ANCA promotes the disease phenotype. nlaa097

Severe cases extend to the cribriform plate and intracranial structures.supported

First CIMDL case with brain extension mimicking a tumor-like lesion. nlaa097

CIMDL can mimic granulomatosis with polyangiitis (GPA/Wegener's) — ANCA positivity in cocaine users leads to misdiagnosis and inappropriate immunosuppressive therapy, which is not indicated for CIMDL and may cause harm.supported

CIMDL, which can mimic ANCA-associated vasculitis due to overlapping clinical features and ANCA positivity. iid3.70215

Norcocaine (formed by CYP3A4 N-demethylation) is metabolized to norcocaine nitroxide, which generates reactive oxygen species via a futile redox cycle, causing pericentral hepatocyte necrosissupported

Norcocaine nitroxide plays key role in cocaine-induced hepatotoxicity via futile redox cycle. Depletion of cellular antioxidant defenses and mitochondrial impairment are causes of ROS production. pmid:22856659

Norcocaine (formed by CYP3A4 N-demethylation) is metabolized to norcocaine nitroxide, which generates reactive oxygen species via a futile redox cycle, causing pericentral hepatocyte necrosispartially supported

Cocaine hepatotoxicity associated with irreversible binding of cocaine metabolite to hepatic protein. Reactive intermediate binds to hepatic protein to produce liver damage. pmid:6848750

Cocaethylene formed during alcohol co-administration has comparable hepatotoxic potential.supported

The potential for cocaethylene to induce acute lethal cell injury in hepatocytes through oxidative mechanisms is similar to cocaine. pmid:8225222

Claim in safety — inconclusiveinconclusiveworking →

Cocaine is an independent risk factor for both ischemic and hemorrhagic stroke, particularly in persons under 55 yearssupported

Cocaine and amphetamines have the strongest association with stroke among illicit drugs. Drug abusers have increased risk of both hemorrhagic and ischemic stroke. Drug abuse is a frequent cause of stroke in young adults. s11910-012-0325-0

Claim in safety — inconclusiveinconclusiveworking →

Brain imaging demonstrates subarachnoid hemorrhage, intracerebral hemorrhage, and cerebral ischemia.supported

Major findings: stroke, subarachnoid and intracerebral hemorrhages, cerebral ischemia. pmid:22856656

A documented fatal case showed CK 29,074 U/L, creatinine 5.8 mg/dL, troponin 9,978 ng/L, and refractory cardiogenic shock.supported

Cocaine toxicity causing multiorgan failure: cardiogenic shock, rhabdomyolysis (CK 29,074), AKI (creatinine 5.8), elevated troponins (9,978)... Patient expired day 3 despite maximal support. cureus.98906

Claim in safety — inconclusiveinconclusiveworking →

In European cocaine-dependent populations, 53.8% report psychotic symptoms during use; paranoid beliefs are the most common manifestation (43.9%)supported

53.8% of cocaine-dependent patients reported psychotic symptoms under the influence of cocaine; most frequently paranoid beliefs and suspiciousness (43.9%). j.eurpsy.2011.06.012

In some clinical settings, prevalence reaches 86.5%.supported

In some settings, cocaine-induced psychosis occurs in as high as 86.5% of users. 08897077.2014.933726

Risk factors for cocaine-induced psychosis include: high consumption quantity, route other than intranasal (faster routes carry higher risk), comorbid cannabis dependence, and antisocial personality disorder.partially supported

Amount of cocaine, antisocial personality disorder, and cannabis dependence predicted CIP with 66.2% sensitivity, 75.8% specificity. j.eurpsy.2011.06.012

The incubation of craving phenomenon — increasing rather than decreasing cue-reactivity over weeks of abstinence — makes sustained recovery particularly challenging.supported

Cue-induced reinstatement increased progressively during abstinence (incubation of craving). s41386-018-0249-8

After 60 days abstinence, tolerance appears to recover — but a single re-infusion fully reinstates tolerance, indicating persistent DAT "priming".supported

A single cocaine re-infusion after 60 days abstinence fully reinstated tolerance, suggesting DAT left in a primed state. jneurosci.4652-15.2016

Behavioral sensitization: While tolerance to euphoric effects develops, sensitization to locomotor, cue-reactive, and craving responses increases with repeated use — the neurobiological foundation of compulsive binge use.partially supported

Drug-induced DA increases are blunted in addicted subjects compared to controls. Addicted subjects show significant DA increases to drug-conditioned cues. pnas.1010654108

Claim in safety — inconclusiveinconclusiveworking →

Claim in safety — inconclusiveinconclusiveworking →

Cross-tolerance: Evidence supports cross-tolerance with other dopaminergic stimulants (amphetamine, methamphetamine, methylphenidate) through shared DAT downregulation and D2 receptor neuroadaptations.supported

Meta-analysis of dopaminergic alterations in users of cocaine, amphetamine, and methamphetamine. jamapsychiatry.2017.0135

Hepatic carboxylesterases transesterify cocaine in the presence of ethanol to form cocaethylene — a metabolite with comparable DAT affinity, similar hepatotoxic potential, and longer half-life than cocainepartially supported

Acute ethanol administration results in the formation of two ethylated derivatives of cocaine, cocaethylene and norcocaethylene in liver, brain, and serum. pmid:1440602

Hepatic carboxylesterases transesterify cocaine in the presence of ethanol to form cocaethylene — a metabolite with comparable DAT affinity, similar hepatotoxic potential, and longer half-life than cocainepartially supported

Cocaethylene is a cocaine metabolite formed by hepatic carboxylesterases in the presence of ethanol. The potential for cocaethylene to induce acute lethal cell injury in hepatocytes through oxidative mechanisms is similar to cocaine. pmid:8225222

Controlled human study confirms the combination is more potent and potentially more toxic than either substance alonesupported

Simultaneous abuse more potent and potentially more toxic than either alone due to cocaethylene formation. pmid:9715356

Claim in safety — inconclusiveinconclusiveworking →

Long QT syndrome variants substantially increase susceptibility to cocaine-induced sudden cardiac death.partially supported

Genetic causes such as congenital long QT syndrome may play a role. pmid:16144174

The 7-fold MI risk elevation applies to the general cocaine-using population; those with pre-existing CAD face substantially higher risk.partially supported

Frequent cocaine users have a seven-fold higher risk of myocardial infarction. s10741-020-09983-3

Claim in safety — inconclusiveinconclusiveworking →

Cocaine is directly hepatotoxic via the norcocaine-ROS pathway.supported

CYP450-mediated cocaine metabolism yields reactive pro-oxidant compound norcocaine (NCOC). Norcocaine nitroxide plays key role in cocaine-induced hepatotoxicity via futile redox cycle. pmid:22856659

Claim in safety — inconclusiveinconclusiveworking →

Psychiatric vulnerability: Over 50% of cocaine-dependent individuals experience psychotic symptoms during usesupported

53.8% of cocaine-dependent patients reported psychotic symptoms under the influence of cocaine. j.eurpsy.2011.06.012

Claim in safety — inconclusiveinconclusiveworking →

Cocaine is a triple monoamine reuptake inhibitor that simultaneously blocks the dopamine transporter (DAT), norepinephrine transporter (NET), and serotonin transporter (SERT) by binding to and stabilizing the outward-facing (open-to-extracellular) conformation of these transporters, preventing substrate translocation.partially supported

Cocaine inhibits all three monoamine transporters within a narrow range: hDAT Ki = 0.23 ± 0.03 μM, hNET Ki = 0.48 ± 0.05 μM, hSERT Ki = 0.74 ± 0.03 μM. pmid:16515684

Cocaine inhibits all three transporters within a narrow 3-fold affinity rangesupported

Cocaine inhibits all three monoamine transporters within a narrow range: hDAT Ki = 0.23 ± 0.03 μM, hNET Ki = 0.48 ± 0.05 μM, hSERT Ki = 0.74 ± 0.03 μM. pmid:16515684

Claim in pharmacology — inconclusiveinconclusiveworking →

The primary reinforcing and psychostimulant effects are attributed to DAT blockade in the nucleus accumbens (ventral striatum), producing rapid accumulation of synaptic dopamine that activates D1 and D2 receptors on medium spiny neuronssupported

Lower D2 receptors in striatum in cocaine users associated with decreased activity in orbitofrontal cortex and anterior cingulate gyrus. pnas.1010654108

Claim in pharmacology — inconclusiveinconclusiveworking →

Claim in pharmacology — inconclusiveinconclusiveworking →

In cocaine-addicted subjects, drug-induced dopamine increases in the striatum are blunted compared with controls, while dopamine responses to cocaine-associated cues are amplified — a discrepancy that drives compulsive use patterns.supported

Drug-induced DA increases are blunted in addicted subjects compared to controls. Addicted subjects show significant DA increases to drug-conditioned cues. pnas.1010654108

Claim in pharmacology — inconclusiveinconclusiveworking →

Cocaine is a use-dependent sodium channel blocker, accounting for its local anesthetic properties and contributing to cardiac arrhythmogenicity (QRS prolongation, His-ventricular conduction delay)supported

Two basic mechanisms: sodium channel blockade and reuptake inhibition of catecholamines... induce electrical abnormalities in the heart. pmid:1346509

Cocaine is a use-dependent sodium channel blocker, accounting for its local anesthetic properties and contributing to cardiac arrhythmogenicity (QRS prolongation, His-ventricular conduction delay)supported

Local anesthetic (sodium and potassium channel blockade)... Local anesthetic effects impair conduction and create substrate for reentrant arrhythmias. pmid:7612173

Claim in pharmacology — not_supportednot supportedworking →

Oral bioavailability is 32–45% (dose-dependent; higher bioavailability at higher oral doses)supported

The mean oral cocaine bioavailability was 0.32 after 100 mg and 0.45 after 200 mg. bky007

Claim in pharmacology — inconclusiveinconclusiveworking →

Elimination half-life by oral route is approximately 48 ± 3 minutessupported

Mean half-life after oral administration was 48 ± 3 min. pmid:7357795

Claim in pharmacology — inconclusiveinconclusiveworking →

Bioavailability is roughly equivalent to oral at 2 mg/kgsupported

Relative bioavailability at 2.0 mg/kg by intranasal and oral routes was not different. pmid:7357795

Elimination half-life is approximately 75 ± 5 minutes by intranasal routesupported

Mean elimination half-life for cocaine by the intranasal route was 75 ± 5 min. pmid:7357795

Peak plasma concentration (Cmax) reaches 83–104 ng/mL after 40 mg intranasal cocaine, with AUC₀→∞ of 211–261 h·ng/mLsupported

Cocaine AUC 211-261 h·ng/mL, Cmax 83-104 ng/mL. jcph.789

Claim in pharmacology — inconclusiveinconclusiveworking →

Claim in pharmacology — inconclusiveinconclusiveworking →

Claim in pharmacology — inconclusiveinconclusiveworking →

Approximately 1–1.5 hours across routes.partially supported

Mean elimination half-life for cocaine by the intranasal route was 75 ± 5 min. Mean half-life after oral administration was 48 ± 3 min. pmid:7357795

CYP3A accounts for 70–90% of this pathway; CYP2B6 contributes a minor fractionpartially supported

CYP3A responsible for 70-90% of cocaine N-demethylase activity (norcocaine production). CYP2B10 minor role despite being markedly induced. pmid:8617431

Norcocaine undergoes further N-oxidation to norcocaine nitroxide, a stable radical that enters a futile redox cycle producing reactive oxygen species — the primary mechanism of cocaine hepatotoxicity.supported

Norcocaine nitroxide plays key role in cocaine-induced hepatotoxicity via futile redox cycle. Depletion of cellular antioxidant defenses and mitochondrial impairment are causes of ROS production. pmid:22856659

Norcocaine undergoes further N-oxidation to norcocaine nitroxide, a stable radical that enters a futile redox cycle producing reactive oxygen species — the primary mechanism of cocaine hepatotoxicity.partially supported

Cocaine hepatotoxicity associated with irreversible binding of cocaine metabolite to hepatic protein. Reactive intermediate binds to hepatic protein to produce liver damage. pmid:6848750

Cocaethylene reaches concentrations similar to cocaine in liver, serum, and brain; it has comparable DAT affinity, similar hepatotoxic potential via ROS production, and a longer duration of action than cocainepartially supported

Acute ethanol administration results in the formation of two ethylated derivatives of cocaine, cocaethylene and norcocaethylene in liver, brain, and serum. The increased morbidity and hepatotoxicity seen with combined administration may be due to formation of toxic ethylated and N-demethylated metabolites. pmid:1440602

Cocaethylene reaches concentrations similar to cocaine in liver, serum, and brain; it has comparable DAT affinity, similar hepatotoxic potential via ROS production, and a longer duration of action than cocainepartially supported

Both drugs caused concentration-dependent hepatotoxicity via reactive oxygen species production. The potential for cocaethylene to induce acute lethal cell injury in hepatocytes through oxidative mechanisms is similar to cocaine. pmid:8225222

Claim in pharmacology — inconclusiveinconclusiveworking →

D3 receptor upregulation: Post-mortem cocaine fatalities show adaptive D3 receptor increases in ventral striatum, amygdala, and nucleus accumbens.partially supported

D3 receptors elevated 1-3 fold in ventromedial striatum and substantia nigra of cocaine overdose victims vs. age-matched controls. jneurosci.16-19-06100.1996

What explains cocaine's unique cardiac toxicity profile? The interaction between Na⁺ channel blockade and sympathomimetic mechanisms in producing arrhythmias remains incompletely modeled, particularly regarding why individual susceptibility varies so dramatically.supported

Death is not dose related in most cases. Lethal myocardial alterations include hypertrophy, fibrosis, and microangiopathy. Genetic causes such as congenital long QT syndrome may play a role. pmid:16144174

Claim in neuroscience — inconclusiveinconclusiveworking →

Claim in neuroscience — inconclusiveinconclusiveworking →

Acute cocaine enhances prefrontal executive function: improved response inhibition accuracy, faster reaction times, and increased NoGo-P3 event-related potential amplitude over frontal electrodessupported

Cocaine improved accuracy, quicker reaction times, and increased prefrontal NoGo-P3 ERP. adb.12274

D2/D3 receptor downregulation: Meta-analysis confirms lower striatal D2/D3 receptor availability in cocaine users versus controls on PET imaging, associated with decreased metabolic activity in orbitofrontal cortex (OFC) and anterior cingulate cortex (ACC).supported

Lower D2 receptors in striatum in cocaine users associated with decreased activity in orbitofrontal cortex and anterior cingulate gyrus. pnas.1010654108

DAT priming: Cocaine self-administration produces tolerance to cocaine's DAT-inhibiting effects in NAc core. After 60 days abstinence, tolerance appears to recover — but a single re-infusion fully reinstates tolerance, indicating persistent molecular "priming" of DAT.supported

Cocaine self-administration in rats produces tolerance to DAT-inhibiting effects of cocaine in nucleus accumbens core. A single cocaine re-infusion after 60 days abstinence fully reinstated tolerance, suggesting DAT left in a primed state. jneurosci.4652-15.2016

PET and SPECT show reduced cerebral perfusion and metabolic abnormalitiessupported

Brain abnormalities in cocaine abusers on CT, MRI, PET, SPECT. Major findings: stroke, subarachnoid and intracerebral hemorrhages, cerebral ischemia. pmid:22856656

Chronic use produces sensitized "wanting" (amplified cue reactivity, dopamine responses to drug-associated stimuli) while simultaneously reducing "liking" (blunted hedonic response to drug itself due to D2 downregulation)supported

Drug-induced DA increases are blunted in addicted subjects compared to controls. Addicted subjects show significant DA increases to drug-conditioned cues. Lower D2 receptors in striatum in cocaine users. pnas.1010654108

The transition from prefrontal voluntary regulation to automatic stimulus-response patterns represents the neurobiological substrate of compulsive drug use.supported

Pharmacologically induced plasticity in brain circuitry. Strengthens learned drug-associated behaviors at expense of adaptive responding for natural rewards. pmid:17805308

Cue-induced cocaine craving paradoxically increases rather than decreases during abstinence, peaking at weeks to months after last usesupported

Cue-induced reinstatement increased progressively during abstinence (incubation of craving). s41386-018-0249-8

Claim in neuroscience — inconclusiveinconclusiveworking →

Why does craving incubate? The paradoxical increase in cue-reactivity during abstinence is counterintuitive from an extinction-learning perspective. The BDNF-mediated mechanism is characterized but the upstream trigger for time-dependent BDNF accumulation is not.supported

Cue-induced reinstatement increased progressively during abstinence (incubation of craving). Rapidly rising brain cocaine levels evoke BDNF increases in prelimbic cortex, NAc core, and VTA after withdrawal. s41386-018-0249-8

Among stimulants, cocaine is distinguished by its short duration of action (5–90 minutes depending on route), high reinforcement potency, and simultaneous blockade of all three monoamine transporters within a narrow affinity range (DAT Ki = 230 nM, NET Ki = 480 nM, SERT Ki = 740 nM).supported

hDAT Ki = 0.23 ± 0.03 μM, hNET Ki = 0.48 ± 0.05 μM, hSERT Ki = 0.74 ± 0.03 μM pmid:16515684

Approximately 25 million people use cocaine globally, and 1.4 million Americans meet criteria for cocaine use disorderpartially supported

Cocaine use disorder (CUD) affects 1.4 million people in the United States adm.0000000000001580

Claim in summary — inconclusiveinconclusiveworking →

Claim in summary — inconclusiveinconclusiveworking →

Cardiovascular toxicity is the primary cause of cocaine-related death, operating through dual mechanisms: sympathomimetic catecholamine excess and use-dependent sodium channel blockade producing arrhythmiassupported

Cocaine has two primary pharmacological properties affecting heart: local anesthetic (sodium and potassium channel blockade) and sympathomimetic (catecholamine uptake inhibition). Synergistic effects of adrenergic and local anesthetic properties elicit toxic cardiac actions. pmid:7612173

Cocaine users carry a 7-fold elevated myocardial infarction risksupported

Frequent cocaine users have a seven-fold higher risk of myocardial infarction. s10741-020-09983-3

Tolerance to euphoric effects develops rapidly within sessions (acute tachyphylaxis) and chronically through D2/D3 receptor downregulation and DAT neuroadaptationspartially supported

Cocaine self-administration in rats produces tolerance to DAT-inhibiting effects of cocaine in nucleus accumbens core. jneurosci.4652-15.2016

Paradoxically, sensitization to locomotor and cue-reactive responses increases simultaneously — this dual process underlies compulsive binge patternspartially supported

Addicted subjects show significant DA increases to drug-conditioned cues. pnas.1010654108

Claim in summary — inconclusiveinconclusiveworking →

Blood cocaine levels cannot reliably predict lethality; individual genetic factors and cumulative cardiac structural changes substantially modify fatal risk.supported

Death is not dose related in most cases. Lethal myocardial alterations include hypertrophy, fibrosis, and microangiopathy. Genetic causes such as congenital long QT syndrome may play a role. pmid:16144174

Intranasal bioavailability is roughly equivalent to oral at 2 mg/kg, but cocaine-induced vasoconstriction of nasal mucosa creates a self-limiting absorption phenomenon: initial cocaine absorbed causes local vasoconstriction that slows absorption of remaining drugpartially supported

Relative bioavailability at 2.0 mg/kg by intranasal and oral routes was not different. pmid:7357795

Oral data from Coe et al. (2018); intranasal t₁/₂ from Wilkinson et al. (1980); intranasal Cmax/AUC from Hassan et al. (2017); IV data from Resnick et al. (1977); smoked data from Cone et al. (1997).supported

The mean oral cocaine bioavailability was 0.32 after 100 mg and 0.45 after 200 mg. Oral cocaine produced a pharmacokinetic profile different from IV cocaine. bky007

Oral data from Coe et al. (2018); intranasal t₁/₂ from Wilkinson et al. (1980); intranasal Cmax/AUC from Hassan et al. (2017); IV data from Resnick et al. (1977); smoked data from Cone et al. (1997).supported

Mean elimination half-life for cocaine by the intranasal route was 75 ± 5 min. Mean half-life after oral administration was 48 ± 3 min. pmid:7357795

Oral data from Coe et al. (2018); intranasal t₁/₂ from Wilkinson et al. (1980); intranasal Cmax/AUC from Hassan et al. (2017); IV data from Resnick et al. (1977); smoked data from Cone et al. (1997).supported

19 healthy volunteer subjects given placebo and cocaine by IV and intranasal routes. Dose-related physiologic and subjective responses documented. pmid:841307

Claim in pharmacokinetic-detail — inconclusiveinconclusiveworking →

The longer intranasal t₁/₂ (75 ± 5 min vs 48 ± 3 min oral) likely reflects this sustained absorption rather than slower elimination.supported

Mean elimination half-life for cocaine by the intranasal route was 75 ± 5 min. Mean half-life after oral administration was 48 ± 3 min. Relative bioavailability at 2.0 mg/kg by intranasal and oral routes was not different. pmid:7357795

CYP3A4 catalyzes N-demethylation of cocaine to norcocaine (responsible for 70–90% of oxidative metabolism); CYP2B6 contributes a minor fractionpartially supported

CYP3A responsible for 70-90% of cocaine N-demethylase activity (norcocaine production). CYP2B10 minor role despite being markedly induced. pmid:8617431

This generates a futile redox cycle producing superoxide and other reactive oxygen species, causing pericentral hepatocyte necrosis.partially supported

Cocaine hepatotoxicity associated with irreversible binding of cocaine metabolite to hepatic protein. Reactive intermediate binds to hepatic protein to produce liver damage. pmid:6848750

Claim in pharmacokinetic-detail — inconclusiveinconclusiveworking →

Contemporary research focuses on addiction neuroscience — cocaine serves as the prototypical substance for studying corticostriatal habit formation, incubation of craving, and neuroplasticity of dependence.supported

Change from voluntary to habitual drug use represents transition from prefrontal cortical to striatal control, with progression from ventral to dorsal striatum. pmid:16251991

Contemporary research focuses on addiction neuroscience — cocaine serves as the prototypical substance for studying corticostriatal habit formation, incubation of craving, and neuroplasticity of dependence.supported

Cue-induced reinstatement increased progressively during abstinence (incubation of craving). Rapidly rising brain cocaine levels evoke BDNF increases in prelimbic cortex, NAc core, and VTA after withdrawal. s41386-018-0249-8

Claim in history — inconclusiveinconclusiveworking →

Claim in history — not_supportednot supportedworking →

News spread globally within weeks.supported

The news spread throughout the world in less than a month. aap.0b013e31825051f3

Claim in history — inconclusiveinconclusiveworking →

Resnick et al. (1977): Intranasal cocaine (10, 25, 100 mg) and IV cocaine in experienced users. At 10 mg intranasal, no effects differed from placebo. At 25 mg, only physiologic changes (heart rate, blood pressure) were observed. At 100 mg intranasal and all IV doses, significant dose-related subjective and physiologic effects occurred.partially supported

10 mg intranasal produced no placebo-different changes; 25 mg produced physiologic changes only in systolic BP; 100 mg intranasal and all IV doses produced significant dose-related responses. pmid:841307

Hassan et al. (2017): Pharmacokinetic characterization of 40 mg intranasal cocaine: Cmax 83–104 ng/mL, AUC₀→∞ 211–261 h·ng/mL, with documented cardiovascular effects.supported

Cocaine AUC 211-261 h·ng/mL, Cmax 83-104 ng/mL. Cocaine produces HR and BP increases. jcph.789

No FDA-approved pharmacotherapy exists for cocaine use disorder as of 2025–2026supported

No FDA-approved treatments exist. adm.0000000000001580

Spronk et al. (2016): Acute cocaine improved response inhibition accuracy and reaction times, and increased prefrontal NoGo-P3 ERP amplitude — consistent with enhanced executive function at acute doses.supported

Cocaine improved accuracy, quicker reaction times, and increased prefrontal NoGo-P3 ERP. adb.12274

Claim in receptor-pharmacology — inconclusiveinconclusiveworking →

D2/D3 receptors (striatal medium spiny neurons, indirect pathway): D2 auto-receptor stimulation initially limits dopamine release, but chronic cocaine exposure downregulates D2/D3 receptors. Post-mortem cocaine fatalities show adaptive upregulation of D3 receptors in ventral striatum and amygdala.partially supported

D3 receptors elevated 1-3 fold in ventromedial striatum and substantia nigra of cocaine overdose victims vs. age-matched controls. jneurosci.16-19-06100.1996

Claim in receptor-pharmacology — inconclusiveinconclusiveworking →

Claim in receptor-pharmacology — inconclusiveinconclusiveworking →

Comparative DAT Ki values from multiple sources; cocaine value from Han and Gu (2006)supported

hDAT Ki = 0.23 ± 0.03 μM pmid:16515684

Cross-tolerance between cocaine and amphetamine-type stimulants is supported by shared DAT downregulation and D2 receptor neuroadaptations.supported

Meta-analysis of dopaminergic alterations in users of cocaine, amphetamine, and methamphetamine. jamapsychiatry.2017.0135

Claim in chemistry — not_supportednot supportedworking →