Sherm effects and high are driven by the way PCP acts on the brain and body. When sherm is smoked, PCP rapidly blocks NMDA glutamate receptors while triggering dopamine surges, producing intense dissociation and euphoria. At the same time, heart rhythm instability, blood pressure spikes, and respiratory suppression can occur. The added embalming fluid increases toxicity by introducing formaldehyde and methanol directly into the body. With repeated exposure, damage to the prefrontal cortex and white matter can lead to lasting cognitive deficits.
What Is Sherm?

Sherm refers to tobacco or marijuana cigarettes that have been dipped in PCP (phencyclidine), embalming fluid, or a combination of both, then dried and smoked. Street names include “wet,” “water,” “fry,” and “dust.” The term originated from Sherman-brand cigarettes commonly used in this preparation. Sherm refers to tobacco or marijuana cigarettes that have been dipped in PCP (phencyclidine), embalming fluid, or a combination of both, then dried and smoked, revealing shocking connections to PCP and Sherm that many users underestimate. Street names include “wet,” “water,” “fry,” and “dust.” The term originated from Sherman-brand cigarettes commonly used in this preparation.
PCP functions as a synthetic dissociative anesthetic that disrupts normal brain signaling. When you smoke sherm, you’re exposed to dissociative drugs that produce altered perception and detachment from your surroundings. The sherm high varies extensively because chemical concentrations remain unregulated and inconsistent. Users often experience a dissociative high, feeling detached from their body and surroundings. PCP use is most common among young adults and high school students.
Embalming fluid adds formaldehyde, methanol, and glutaraldehyde to the mixture, compounding toxicity. You can’t predict potency since it depends on soak time, PCP concentration, and base material. This unpredictability makes sherm particularly dangerous.
How Sherm Affects Your Brain During the High
When you smoke sherm, PCP rapidly crosses the blood-brain barrier and blocks NMDA glutamate receptors, the brain’s primary excitatory signaling system. This glutamate NMDA receptor antagonism disrupts normal neural communication, producing dissociation and hallucinations. Simultaneously, dopamine release in mesolimbic pathways surges, creating intense euphoria and heightened internal experiences. This flood of dopamine far exceeds what the brain is naturally designed to process, intensifying the drug’s addictive potential. Disrupted GABA balance further destabilizes your brain’s inhibitory controls, fueling agitation and impulsivity.
When you smoke sherm, PCP rapidly crosses the blood-brain barrier and blocks NMDA glutamate receptors, the brain’s primary excitatory signaling system, illustrating the risks associated with Sherm drug exposure at a neurochemical level. This glutamate NMDA receptor antagonism disrupts normal neural communication, producing dissociation and hallucinations. Simultaneously, dopamine release in mesolimbic pathways surges, creating intense euphoria and heightened internal experiences. This flood of dopamine far exceeds what the brain is naturally designed to process, intensifying the drug’s addictive potential. Disrupted GABA balance further destabilizes your brain’s inhibitory controls, fueling agitation and impulsivity.
| Neurochemical Change | Brain Region Affected | Resulting Effect |
|---|---|---|
| NMDA receptor blockade | Thalamocortical circuits | Dissociation, sensory distortion |
| Dopamine surge | Mesolimbic pathway | Euphoria, addiction risk |
| GABA disruption | Prefrontal cortex, limbic system | Impulsivity, psychotic symptoms |
These acute neurochemical shifts explain why sherm produces such unpredictable, dangerous alterations in perception, emotion, and behavior. However, research shows that with sustained recovery and proper treatment, the brain’s remarkable ability to heal can lead to significant cognitive improvements over time. These acute neurochemical shifts explain why sherm produces such unpredictable, dangerous alterations in perception, emotion, and behavior, key characteristics of sherm sticks that make them especially hazardous. However, research shows that with sustained recovery and proper treatment, the brain’s remarkable ability to heal can lead to significant cognitive improvements over time.
What Sherm Does to Your Heart, Lungs, and Body

Beyond the brain, sherm’s toxic effects cascade rapidly through your cardiovascular, respiratory, and organ systems. When sherm disrupts your central nervous system, it simultaneously destabilizes heart rate and blood pressure regulation, creating dangerous cardiac rhythm disturbances. The chemical compounds can trigger cardiovascular collapse, particularly when contaminated mixtures introduce adulterants that cause thrombosis or emboli. Long-term intravenous use can lead to collapsed veins, making it increasingly difficult for blood to flow properly throughout the body.
Your respiratory system suffers significant damage as sherm depresses brainstem breathing centers. This slows your breathing rate and reduces oxygen delivery, leading to hypoxia that compounds the hallucinations and psychosis you’re already experiencing. Pulmonary edema and aspiration pneumonia become real risks. The way sherm slows breathing mirrors the dangerous respiratory depression seen with other substances that bind to opioid receptors in the brain.
Chronic exposure damages multiple organ systems. Your liver processes these toxins repeatedly, while your kidneys strain against breakdown products. Rhabdomyolysis can occur, flooding your system with harmful proteins that overwhelm renal function.
When a Sherm High Becomes a Medical Emergency
Although most sherm highs produce intense dissociative effects that eventually subside, certain warning signs indicate your body’s systems are failing and require immediate emergency intervention.
While most sherm experiences eventually subside, recognizing critical warning signs could mean the difference between recovery and fatal organ failure.
When you’re shermed out, watch for severe agitation that won’t calm, chest pain or pressure, and extreme confusion signaling substance-induced delirium. Body temperature climbing above 104°F dramatically increases brain injury risk. Seizures, unresponsiveness, or bluish skin demand immediate 911 activation.
Critical sherm side effects include respiratory failure, irregular heartbeat, and dark urine indicating kidney damage. Intense paranoia with hallucinations may trigger self-harm attempts or violent behavior that endangers everyone present. Paranoid delusions can last for 15 hours or longer, making the situation dangerous for extended periods. Following extended binges, individuals may experience a “crash” characterized by long periods of sleep, depression, and intense cravings that complicate recovery.
In the ER, medical teams immediately monitor crucial signs and typically administer benzodiazepines to control dangerous agitation. Don’t delay calling emergency services, these symptoms can escalate to cardiac arrest or organ failure within minutes.
How Sherm Damages Your Brain Over Time

Because PCP acts as an NMDA receptor antagonist, chronic sherm use triggers a cascade of neurotoxic damage that progressively destroys brain tissue. You’ll experience glutamate signaling disruption, excitotoxicity, and oxidative stress that kills neurons in your prefrontal cortex and striatum. Chronic PCP use also destroys glial cells, reducing myelin production and slowing neural communication.
| Brain Region | Type of Damage | Functional Impact |
|---|---|---|
| Prefrontal Cortex | Volume loss, neuronal death | Impaired decision-making, planning |
| Striatum | Dopamine terminal damage | Anhedonia, motivation deficits |
| White Matter | Demyelination, tract damage | Slower processing speed |
The sherm effects compound over time. Brain damage from repeated exposure mimics traumatic brain injury patterns. Similar to methamphetamine abuse, chronic sherm use can lead to deficits in memory and executive functioning that significantly impact daily life. While some recovery occurs with abstinence, structural damage often remains partially irreversible.
Frequently Asked Questions
How Long Does a Sherm High Typically Last?
A sherm high typically lasts 4, 8 hours, though you may experience effects ranging from 6, 24 hours depending on your dose and body composition. Because PCP is fat-soluble, your adipose tissue stores the compound and releases it slowly, which can cause effects to fluctuate or recur over days. You’ll likely notice residual cognitive and motor impairment for up to 24, 48 hours after the peak subsides, even when you feel sober.
Can You Become Addicted to Sherm After Using It Once?
Yes, you can develop addiction after a single sherm use, though it’s more common with repeated exposure. PCP triggers powerful dopamine surges that create strong reinforcement signals in your brain’s reward system. This initial exposure can activate addiction pathways, especially if you have genetic vulnerabilities, mental health conditions, or environmental risk factors. Your brain chemistry, age, and co-use of other substances profoundly influence how quickly dependence develops.
Does Sherm Show up on Standard Drug Tests?
Yes, sherm can show up on drug tests, but it depends on the panel used. Standard 5-panel workplace screens typically don’t include PCP, while 10-panel and expanded tests often do. Since sherm contains PCP, labs detect it through PCP-specific immunoassays with confirmatory GC/MS testing. You’ll test positive for approximately 2, 7 days after use, though heavy or chronic use extends this window considerably due to PCP’s lipophilic properties.
Is Sherm Withdrawal Dangerous Without Medical Supervision?
Yes, sherm withdrawal can be dangerous without medical supervision. You risk severe psychological symptoms including psychosis, hallucinations, and suicidal ideation that require immediate intervention. Your cardiovascular system may become unstable, with elevated blood pressure and irregular heartbeat. You’re also vulnerable to seizures, delirium, and autonomic dysregulation causing dehydration. Clinical protocols recommend supervised detox because these complications escalate unpredictably, and you’ll need monitoring, medication management, and mental health support throughout recovery.
Can Sherm Trigger Permanent Psychosis in Otherwise Healthy People?
Yes, sherm can trigger permanent psychosis even in otherwise healthy people. PCP blocks NMDA glutamate receptors, causing downstream dopamine dysregulation that mimics schizophrenia’s neurochemistry. Research shows 10, 28% of drug-induced psychosis cases develop chronic symptoms persisting beyond six months. Your risk increases with higher doses, frequent use, and genetic vulnerability you may not know you carry. Repeated exposure can entrench psychotic neurocircuit changes that don’t fully reverse after stopping.





