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Toxicology – Hyperkalemia (Elevated Potassium Levels)
Source
Elevated potassium levels can result from potassium supplements, kidney failure (especially in dialysis patients), and certain medications such as ACE inhibitors, NSAIDs, and potassium-sparing diuretics. It may also occur due to cellular breakdown in conditions like rhabdomyolysis, hemolysis, or tumor lysis syndrome.
Typical Presentation
Patients may present with vague symptoms such as weakness or fatigue, but serious cases often involve cardiac abnormalities detected on ECG, especially in those with impaired kidney function.
Clinical Features
Symptoms are often nonspecific and may include:
High extracellular potassium alters the electrical gradient across cardiac cells, making them more excitable and prone to dangerous arrhythmias.
Management
Treatment is urgent and involves three main strategies:
Source
Elevated potassium levels can result from potassium supplements, kidney failure (especially in dialysis patients), and certain medications such as ACE inhibitors, NSAIDs, and potassium-sparing diuretics. It may also occur due to cellular breakdown in conditions like rhabdomyolysis, hemolysis, or tumor lysis syndrome.
Typical Presentation
Patients may present with vague symptoms such as weakness or fatigue, but serious cases often involve cardiac abnormalities detected on ECG, especially in those with impaired kidney function.
Clinical Features
Symptoms are often nonspecific and may include:
- Generalized weakness and malaise
- Slow heart rate (bradycardia)
- Cardiac arrhythmias
- Peaked T waves
- Prolonged PR interval
- Flattened or absent P waves
- Widened QRS complex
- “Sine wave” pattern leading to cardiac arrest
High extracellular potassium alters the electrical gradient across cardiac cells, making them more excitable and prone to dangerous arrhythmias.
Management
Treatment is urgent and involves three main strategies:
- Stabilize the heart
- IV calcium (calcium gluconate or calcium chloride) to protect cardiac membranes
- Shift potassium into cells
- Insulin with glucose
- β-agonists (e.g., high-dose nebulized albuterol)
- Sodium bicarbonate (in cases of acidosis)
- Remove potassium from the body
- Dialysis (most effective in severe cases)
- Potassium-binding resins (e.g., sodium polystyrene sulfonate)
- ECG monitoring is essential in suspected hyperkalemia.
- Calcium does not lower potassium—it stabilizes the heart.
- Severe hyperkalemia is a medical emergency due to risk of fatal arrhythmias.
- Kidney function plays a major role in potassium regulation.
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Toxicology – Lithium Toxicity
Source
Lithium carbonate is commonly prescribed for bipolar disorder. It is also used in industrial settings, including fireworks production.
Typical Presentation
Toxicity may occur from acute overdose, chronic accumulation, or a combination of both. Patients on long-term therapy are especially at risk if kidney function declines or if interacting medications are introduced.
Clinical Features
Lithium toxicity presents in three main patterns:
Lithium affects multiple intracellular pathways, including inhibition of signaling systems and neurotransmitter modulation. It is eliminated almost entirely by the kidneys, making renal function a key factor in toxicity.
Management
Treatment is supportive and focuses on enhancing elimination:
Source
Lithium carbonate is commonly prescribed for bipolar disorder. It is also used in industrial settings, including fireworks production.
Typical Presentation
Toxicity may occur from acute overdose, chronic accumulation, or a combination of both. Patients on long-term therapy are especially at risk if kidney function declines or if interacting medications are introduced.
Clinical Features
Lithium toxicity presents in three main patterns:
- Acute toxicity: Predominantly gastrointestinal symptoms such as nausea, vomiting, diarrhea, and dizziness. Kidney injury and mild cardiac changes (e.g., QT prolongation) may occur.
- Chronic toxicity: Mainly neurological symptoms including tremor, weakness, hyperreflexia, involuntary movements, poor coordination, confusion, and altered consciousness, which can progress to coma.
- Acute-on-chronic toxicity: A combination of both GI and neurological symptoms, often more severe.
Lithium affects multiple intracellular pathways, including inhibition of signaling systems and neurotransmitter modulation. It is eliminated almost entirely by the kidneys, making renal function a key factor in toxicity.
Management
Treatment is supportive and focuses on enhancing elimination:
- IV fluids to improve kidney perfusion and promote excretion
- Whole bowel irrigation for sustained-release ingestion
- Hemodialysis for severe cases (e.g., high lithium levels, neurological symptoms, or kidney impairment)
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- Toxicity risk increases with dehydration, kidney dysfunction, and certain medications (e.g., NSAIDs, ACE inhibitors).
- Neurological symptoms are more prominent in chronic toxicity.
- Lithium levels may rise again after dialysis, requiring repeated treatments.
- Activated charcoal is not effective for lithium overdose.
- Therapeutic levels are typically 0.6–1.2 mEq/L.
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Toxicology – Methylxanthine Toxicity (Caffeine, Theophylline, Theobromine)
Source
Methylxanthines include compounds such as caffeine, theophylline (used in respiratory diseases), and theobromine (found in chocolate). These substances are present in beverages, medications, and certain foods.
Typical Presentation
Toxicity often results from overdose—intentional or accidental—and can present with both gastrointestinal and cardiovascular symptoms. Severe cases may rapidly progress to life-threatening complications.
Clinical Features
Early symptoms commonly include headache, nausea, vomiting (often persistent), abdominal discomfort, and diarrhea. As toxicity worsens, patients may develop:
Mechanism of Action
Methylxanthines exert multiple effects:
Management
Treatment is primarily supportive and may include:
Key Points
Source
Methylxanthines include compounds such as caffeine, theophylline (used in respiratory diseases), and theobromine (found in chocolate). These substances are present in beverages, medications, and certain foods.
Typical Presentation
Toxicity often results from overdose—intentional or accidental—and can present with both gastrointestinal and cardiovascular symptoms. Severe cases may rapidly progress to life-threatening complications.
Clinical Features
Early symptoms commonly include headache, nausea, vomiting (often persistent), abdominal discomfort, and diarrhea. As toxicity worsens, patients may develop:
- Rapid heart rate and breathing
- Low blood pressure with wide pulse pressure
- Tremors, agitation, and restlessness
- Seizures, including status epilepticus
- Cardiac arrhythmias (ranging from sinus tachycardia to ventricular fibrillation)
Mechanism of Action
Methylxanthines exert multiple effects:
- Block adenosine receptors (removing inhibitory CNS effects)
- Stimulate β-adrenergic activity, increasing heart rate and blood pressure
- Inhibit phosphodiesterase, leading to increased cAMP and intracellular calcium
Management
Treatment is primarily supportive and may include:
- IV fluids and vasopressors (e.g., norepinephrine or phenylephrine) for hypotension
- Benzodiazepines for seizures
- Management of arrhythmias (often with calcium channel blockers)
- Activated charcoal to reduce absorption
- Whole bowel irrigation for sustained-release ingestions
Key Points
- Severe toxicity can cause persistent vomiting, seizures, and dangerous arrhythmias.
- Theobromine is especially toxic to animals (e.g., dogs, rabbits).
- Dialysis is considered in life-threatening cases.
- Multidose activated charcoal may enhance elimination.
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Toxicology – Digitalis (Digoxin) Toxicity
Source
Digoxin is a cardiac medication used to manage conditions like atrial fibrillation and heart failure. Similar cardiac glycosides are naturally found in plants such as foxglove, oleander, and milkweed, as well as in certain toads (e.g., Bufo species).
Typical Presentation
Patients—often elderly with underlying heart disease—may present with gastrointestinal complaints, abnormal heart rhythms, and visual disturbances. Toxicity can occur from acute overdose or chronic accumulation.
Clinical Features
Mechanism of Action
Digoxin works by inhibiting the sodium–potassium ATPase pump, which increases intracellular calcium and enhances cardiac contractility. It also increases vagal tone, slowing conduction through the heart. However, these same effects predispose to abnormal heart rhythms in overdose.
Management
Treatment focuses on stabilizing the patient and addressing arrhythmias:
Key Points
Source
Digoxin is a cardiac medication used to manage conditions like atrial fibrillation and heart failure. Similar cardiac glycosides are naturally found in plants such as foxglove, oleander, and milkweed, as well as in certain toads (e.g., Bufo species).
Typical Presentation
Patients—often elderly with underlying heart disease—may present with gastrointestinal complaints, abnormal heart rhythms, and visual disturbances. Toxicity can occur from acute overdose or chronic accumulation.
Clinical Features
- Acute toxicity: Symptoms usually appear several hours after ingestion and include nausea, vomiting, elevated potassium levels, and dangerous cardiac arrhythmias.
- Chronic toxicity: More subtle and varied, including fatigue, confusion, weakness, gastrointestinal upset, and visual changes (e.g., blurred vision, yellow-tinted vision or “xanthopsia”).
Mechanism of Action
Digoxin works by inhibiting the sodium–potassium ATPase pump, which increases intracellular calcium and enhances cardiac contractility. It also increases vagal tone, slowing conduction through the heart. However, these same effects predispose to abnormal heart rhythms in overdose.
Management
Treatment focuses on stabilizing the patient and addressing arrhythmias:
- Supportive care with cardiac monitoring
- Atropine for symptomatic bradycardia
- Correction of electrolyte imbalances (especially potassium and magnesium)
- Activated charcoal if ingestion is recent
- Digoxin-specific antibody fragments (Digoxin immune Fab) for severe toxicity (e.g., life-threatening arrhythmias, high potassium, or hemodynamic instability)
Key Points
- Toxicity can be acute or chronic, with different clinical patterns.
- Visual disturbances are a classic clue.
- Hyperkalemia in acute toxicity is a poor prognostic sign.
- Digoxin levels should be interpreted carefully, especially early after ingestion.
- Antibody therapy is the definitive treatment in severe cases.
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Toxicology – Cocaine and Crack Toxicity
Source
Cocaine is derived from the leaves of the coca plant. It is commonly used as a powder for nasal insufflation, while crack cocaine is a solid form that is typically smoked using a pipe or glass tube.
Typical Presentation
Use often produces an immediate sense of intense euphoria, energy, and confidence. These effects are short-lived, leading to repeated dosing. As toxicity develops, individuals may experience anxiety, paranoia, palpitations, and chest pain.
Clinical Features
Cocaine toxicity presents as a classic sympathomimetic toxidrome, including tachycardia, hypertension, vasoconstriction (both peripheral and coronary), dilated pupils, sweating, hyperthermia, and agitation. Severe complications may include seizures, rhabdomyolysis, cardiac arrhythmias, and coma.
Mechanism of Action
Cocaine exerts its effects by blocking the reuptake of serotonin, dopamine, and norepinephrine, resulting in increased sympathetic activity. It also blocks sodium channels, giving it local anesthetic properties and contributing to cardiac conduction abnormalities and arrhythmias.
Management
Treatment is primarily supportive. Benzodiazepines are first-line therapy for agitation, anxiety, and chest pain. Aspirin and nitroglycerin are safe and effective in managing cocaine-associated chest pain. Beta-blockers should be avoided due to the risk of unopposed alpha-adrenergic stimulation; calcium channel blockers are a safer alternative if needed.
Key Points
Source
Cocaine is derived from the leaves of the coca plant. It is commonly used as a powder for nasal insufflation, while crack cocaine is a solid form that is typically smoked using a pipe or glass tube.
Typical Presentation
Use often produces an immediate sense of intense euphoria, energy, and confidence. These effects are short-lived, leading to repeated dosing. As toxicity develops, individuals may experience anxiety, paranoia, palpitations, and chest pain.
Clinical Features
Cocaine toxicity presents as a classic sympathomimetic toxidrome, including tachycardia, hypertension, vasoconstriction (both peripheral and coronary), dilated pupils, sweating, hyperthermia, and agitation. Severe complications may include seizures, rhabdomyolysis, cardiac arrhythmias, and coma.
Mechanism of Action
Cocaine exerts its effects by blocking the reuptake of serotonin, dopamine, and norepinephrine, resulting in increased sympathetic activity. It also blocks sodium channels, giving it local anesthetic properties and contributing to cardiac conduction abnormalities and arrhythmias.
Management
Treatment is primarily supportive. Benzodiazepines are first-line therapy for agitation, anxiety, and chest pain. Aspirin and nitroglycerin are safe and effective in managing cocaine-associated chest pain. Beta-blockers should be avoided due to the risk of unopposed alpha-adrenergic stimulation; calcium channel blockers are a safer alternative if needed.
Key Points
- Beta-blockers can worsen coronary vasoconstriction in cocaine toxicity and should be avoided.
- Cocaine is often adulterated with substances such as levamisole, which can cause serious complications including agranulocytosis and vasculitis.
- Crack cocaine is a highly addictive, smokable form known for rapid onset and intense effects.
- Some users combine cocaine with opioids (“speedballing”), increasing the risk of severe toxicity and overdose.
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Toxicology – LSD and Psilocybin (Hallucinogen Toxicity)
Source
Lysergic acid diethylamide (LSD) is a synthetic hallucinogen derived from ergot and is typically administered on blotter paper, sugar cubes, gelatin, or as liquid placed on the tongue. Psilocybin is a naturally occurring psychedelic compound found in certain mushrooms, commonly referred to as “magic mushrooms.”
Typical Presentation
Individuals often present after recreational use with altered perception. A common scenario involves a person experiencing a “bad trip” characterized by fear, anxiety, or distress following ingestion.
Clinical Features
Neuropsychiatric effects predominate, including visual and auditory hallucinations, synesthesia (blending of senses), and distorted perception of time. In adverse reactions, patients may experience intense fear, panic, depression, or psychosis. Physical findings may include dilated pupils, increased heart rate, elevated blood pressure, hyperthermia, and agitation. These substances can also worsen or reveal underlying psychiatric conditions.
Mechanism of Action
Both LSD and psilocybin act primarily on serotonin receptors, particularly the 5-HT2A subtype, producing their hallucinogenic effects. After oral ingestion, onset typically occurs within 1 to 2 hours, with effects lasting up to 12 hours depending on dose. Tolerance develops quickly but also resolves rapidly after discontinuation.
Management
Treatment is supportive. A calm environment and reassurance are essential. Benzodiazepines may be used to manage anxiety, agitation, and autonomic symptoms such as tachycardia.
Key Points
Source
Lysergic acid diethylamide (LSD) is a synthetic hallucinogen derived from ergot and is typically administered on blotter paper, sugar cubes, gelatin, or as liquid placed on the tongue. Psilocybin is a naturally occurring psychedelic compound found in certain mushrooms, commonly referred to as “magic mushrooms.”
Typical Presentation
Individuals often present after recreational use with altered perception. A common scenario involves a person experiencing a “bad trip” characterized by fear, anxiety, or distress following ingestion.
Clinical Features
Neuropsychiatric effects predominate, including visual and auditory hallucinations, synesthesia (blending of senses), and distorted perception of time. In adverse reactions, patients may experience intense fear, panic, depression, or psychosis. Physical findings may include dilated pupils, increased heart rate, elevated blood pressure, hyperthermia, and agitation. These substances can also worsen or reveal underlying psychiatric conditions.
Mechanism of Action
Both LSD and psilocybin act primarily on serotonin receptors, particularly the 5-HT2A subtype, producing their hallucinogenic effects. After oral ingestion, onset typically occurs within 1 to 2 hours, with effects lasting up to 12 hours depending on dose. Tolerance develops quickly but also resolves rapidly after discontinuation.
Management
Treatment is supportive. A calm environment and reassurance are essential. Benzodiazepines may be used to manage anxiety, agitation, and autonomic symptoms such as tachycardia.
Key Points
- The user’s mindset (“set”) and environment (“setting”) strongly influence the experience.
- Hallucinogen effects can vary widely depending on dose and individual susceptibility.
- These substances can precipitate or exacerbate psychiatric disorders in vulnerable individuals.
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Toxicology – Kratom Toxicity
Source
Kratom is derived from the leaves of the Mitragyna speciosa tree native to Southeast Asia. It is commonly sold as a powdered product in shops and online, often used in teas or capsules.
Typical Presentation
Use may produce stimulant-like effects at lower doses and opioid-like effects at higher doses. Users may report increased energy initially, followed by more sedative effects with larger amounts.
Clinical Features
At low doses, kratom can cause mild stimulation and euphoria. At higher doses, effects resemble opioids and include pinpoint pupils (miosis), nausea, vomiting, decreased appetite, headache, and mild respiratory depression. Chronic use may lead to dependence, and withdrawal symptoms can occur after cessation.
Mechanism of Action
Kratom contains active alkaloids, primarily mitragynine and 7-hydroxymitragynine, which act on opioid receptors. Mitragynine also has some activity at alpha-adrenergic receptors, contributing to stimulant effects at lower doses. Compared to traditional opioids, its respiratory depressant effects are generally less pronounced.
Management
Treatment is supportive. In cases of significant opioid-like toxicity, naloxone may be considered, although its effectiveness may vary.
Key Points
Source
Kratom is derived from the leaves of the Mitragyna speciosa tree native to Southeast Asia. It is commonly sold as a powdered product in shops and online, often used in teas or capsules.
Typical Presentation
Use may produce stimulant-like effects at lower doses and opioid-like effects at higher doses. Users may report increased energy initially, followed by more sedative effects with larger amounts.
Clinical Features
At low doses, kratom can cause mild stimulation and euphoria. At higher doses, effects resemble opioids and include pinpoint pupils (miosis), nausea, vomiting, decreased appetite, headache, and mild respiratory depression. Chronic use may lead to dependence, and withdrawal symptoms can occur after cessation.
Mechanism of Action
Kratom contains active alkaloids, primarily mitragynine and 7-hydroxymitragynine, which act on opioid receptors. Mitragynine also has some activity at alpha-adrenergic receptors, contributing to stimulant effects at lower doses. Compared to traditional opioids, its respiratory depressant effects are generally less pronounced.
Management
Treatment is supportive. In cases of significant opioid-like toxicity, naloxone may be considered, although its effectiveness may vary.
Key Points
- Kratom has both stimulant and opioid-like properties depending on dose.
- It is sometimes used by individuals attempting to reduce opioid dependence.
- Severe toxicity and fatalities are uncommon and often involve coingestants or adulterants.
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Toxicology – Gamma-Hydroxybutyrate (GHB) Toxicity
Source
GHB is a synthetically produced compound available as a powder or dissolved liquid. Related substances such as gamma-butyrolactone (GBL) act as prodrugs and are converted into GHB in the body.
Typical Presentation
Exposure often occurs in social settings. Individuals may suddenly lose consciousness after ingestion, with rapid recovery hours later and little to no memory of events.
Clinical Features
At lower doses, GHB produces euphoria, disinhibition, and sedative effects. Higher doses can lead to central nervous system depression, amnesia, and coma. Additional findings may include bradycardia, hypotension, hypothermia, respiratory depression, seizures, and myoclonus. Coingestion with alcohol significantly increases the risk of severe toxicity and respiratory arrest. A characteristic feature is abrupt awakening after several hours due to a rebound effect.
Mechanism of Action
GHB is structurally related to GABA and readily crosses the blood–brain barrier. It acts on specific GHB receptors and, at higher concentrations, also stimulates GABA receptors. These effects increase dopamine release initially and then suppress neuronal activity, leading to sedation and coma. A rebound increase in dopamine may occur several hours after ingestion, explaining sudden recovery.
Management
Treatment is supportive, with early attention to airway protection and ventilation. There is no specific antidote. Agitated patients may require sedation, and benzodiazepines are used for seizure control.
Key Points
103
Source
GHB is a synthetically produced compound available as a powder or dissolved liquid. Related substances such as gamma-butyrolactone (GBL) act as prodrugs and are converted into GHB in the body.
Typical Presentation
Exposure often occurs in social settings. Individuals may suddenly lose consciousness after ingestion, with rapid recovery hours later and little to no memory of events.
Clinical Features
At lower doses, GHB produces euphoria, disinhibition, and sedative effects. Higher doses can lead to central nervous system depression, amnesia, and coma. Additional findings may include bradycardia, hypotension, hypothermia, respiratory depression, seizures, and myoclonus. Coingestion with alcohol significantly increases the risk of severe toxicity and respiratory arrest. A characteristic feature is abrupt awakening after several hours due to a rebound effect.
Mechanism of Action
GHB is structurally related to GABA and readily crosses the blood–brain barrier. It acts on specific GHB receptors and, at higher concentrations, also stimulates GABA receptors. These effects increase dopamine release initially and then suppress neuronal activity, leading to sedation and coma. A rebound increase in dopamine may occur several hours after ingestion, explaining sudden recovery.
Management
Treatment is supportive, with early attention to airway protection and ventilation. There is no specific antidote. Agitated patients may require sedation, and benzodiazepines are used for seizure control.
Key Points
- GHB has a characteristic salty taste when mixed in beverages.
- It is available medically in some settings for treatment of narcolepsy with cataplexy.
- Certain products have historically contained GHB or its precursors, leading to accidental poisonings.
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Toxicology – Phencyclidine (PCP) Toxicity
Source
Phencyclidine (PCP) is a synthetically produced drug derived from cyclohexanone and piperidine. It is often applied to plant material such as marijuana, mint, or parsley and then smoked. It is known by various street names including “Sherm,” “Wet,” and “Fry.”
Typical Presentation
Patients may present with fluctuating levels of consciousness. A common pattern includes sudden awakening from an unresponsive state followed by extreme agitation, aggression, and attempts to escape or fight.
Clinical Features
Symptoms range from deep sedation or coma to severe agitation and psychosis. Individuals may exhibit unpredictable behavior, including violent outbursts and reduced sensitivity to pain. Physical findings often include nystagmus, hypertension, tachycardia, and seizures. Rapid shifts between sedation and agitation are characteristic.
Mechanism of Action
PCP is a lipophilic dissociative anesthetic that primarily blocks NMDA receptors in the brain. It also has mild effects on catecholamine reuptake, contributing to its stimulant and psychotropic effects.
Management
Treatment is supportive. Benzodiazepines are used to control agitation and anxiety. In cases of severe agitation or danger to others, physical or chemical restraints may be necessary.
Key Points
Source
Phencyclidine (PCP) is a synthetically produced drug derived from cyclohexanone and piperidine. It is often applied to plant material such as marijuana, mint, or parsley and then smoked. It is known by various street names including “Sherm,” “Wet,” and “Fry.”
Typical Presentation
Patients may present with fluctuating levels of consciousness. A common pattern includes sudden awakening from an unresponsive state followed by extreme agitation, aggression, and attempts to escape or fight.
Clinical Features
Symptoms range from deep sedation or coma to severe agitation and psychosis. Individuals may exhibit unpredictable behavior, including violent outbursts and reduced sensitivity to pain. Physical findings often include nystagmus, hypertension, tachycardia, and seizures. Rapid shifts between sedation and agitation are characteristic.
Mechanism of Action
PCP is a lipophilic dissociative anesthetic that primarily blocks NMDA receptors in the brain. It also has mild effects on catecholamine reuptake, contributing to its stimulant and psychotropic effects.
Management
Treatment is supportive. Benzodiazepines are used to control agitation and anxiety. In cases of severe agitation or danger to others, physical or chemical restraints may be necessary.
Key Points
- PCP intoxication often presents with alternating states of sedation and agitation.
- Patients may exhibit significant strength and decreased pain perception, making management challenging.
- A useful mnemonic for features includes “RED DANES”: rage, erythema, dilated pupils, delusions, amnesia, nystagmus, excitation, and skin dryness.
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Toxicology – Salvia (Salvia divinorum)
Source
Salvia divinorum is a plant from the mint family native to Oaxaca, Mexico. Its leaves or concentrated extracts are commonly sold online or in specialty shops and are typically smoked to produce psychoactive effects.
Typical Presentation
Users often experience a rapid onset of intense but short-lived hallucinations after smoking. During intoxication, individuals may appear disconnected from reality, mumbling, or reacting to internal stimuli. Upon recovery, they may describe vivid, unusual experiences or feelings of entering alternate realities.
Clinical Features
Effects are brief, usually lasting only a few minutes. Common features include visual and tactile hallucinations, dissociation, inappropriate laughter, altered perception of reality, and unusual sensations such as merging with objects or changes in body form. Some individuals experience distress or fear during recovery, similar to an emergence reaction seen with dissociative anesthetics.
Mechanism of Action
The active compound, salvinorin A, is a potent and selective kappa-opioid receptor agonist. Unlike traditional opioids, it does not significantly depress respiration.
Management
Treatment is supportive. Because symptoms are short-lived, most cases resolve without medical intervention. Reassurance is usually sufficient for individuals experiencing anxiety or a “bad trip.”
Key Points
Source
Salvia divinorum is a plant from the mint family native to Oaxaca, Mexico. Its leaves or concentrated extracts are commonly sold online or in specialty shops and are typically smoked to produce psychoactive effects.
Typical Presentation
Users often experience a rapid onset of intense but short-lived hallucinations after smoking. During intoxication, individuals may appear disconnected from reality, mumbling, or reacting to internal stimuli. Upon recovery, they may describe vivid, unusual experiences or feelings of entering alternate realities.
Clinical Features
Effects are brief, usually lasting only a few minutes. Common features include visual and tactile hallucinations, dissociation, inappropriate laughter, altered perception of reality, and unusual sensations such as merging with objects or changes in body form. Some individuals experience distress or fear during recovery, similar to an emergence reaction seen with dissociative anesthetics.
Mechanism of Action
The active compound, salvinorin A, is a potent and selective kappa-opioid receptor agonist. Unlike traditional opioids, it does not significantly depress respiration.
Management
Treatment is supportive. Because symptoms are short-lived, most cases resolve without medical intervention. Reassurance is usually sufficient for individuals experiencing anxiety or a “bad trip.”
Key Points
- Effects are rapid in onset and short in duration compared to many other hallucinogens.
- The substance is often smoked using specialized equipment due to its high vaporization temperature.
- Oral ingestion is generally ineffective because the active compound is inactivated in the gastrointestinal tract.
- Many users report the experience as unpleasant and do not continue use.
