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A Man Drank 1 Bottle Rubbing Alcohol For COVID-19. This Is What Happened To His Brain.

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A bottle of 91% isopropyl alcohol became a homemade “vaccine” — and nearly killed the man who drank it.

As COVID-19 fear spread across the country in early March, so did a dangerous rumor: that drinking rubbing alcohol could disinfect the body from the inside and ward off the virus. Toxicologist and YouTube educator Dr. Bernard Hsu, who publishes under the handle Chubbyemu, laid out exactly what happens when someone acts on that rumor in a case study centered on a 35-year-old patient he calls “CB.” The man, suspecting he’d been exposed to the coronavirus, drank an entire bottle of 91% isopropyl alcohol believing it would sanitize him from within.

• CB, 35, drank a full bottle of 91% rubbing alcohol after suspected COVID-19 exposure, believing it would disinfect his body.
• Isopropanol is roughly twice as potent a central nervous system depressant as ethanol and carries a longer half-life, driving CB into severe inebriation, dizziness, and progressive lethargy.
• Hospital workup showed ketosis without significant metabolic acidosis and an elevated osmolar gap — the classic fingerprint of isopropyl alcohol poisoning, distinct from methanol or ethylene glycol toxicity.

Alcohol Overwhelmed His Biological System

Once swallowed, isopropanol doesn’t sit in the stomach — it’s absorbed fast and metabolized almost immediately by the liver’s alcohol dehydrogenase enzyme into acetone. That single fact undercuts the entire premise of drinking it as protection: there’s no window where the chemical just “cleans” anything internally before the body starts processing it as a toxin. CB’s case tracked the textbook progression — severe inebriation, dizziness, headache, and CNS depression that worsened into altered mental status and lethargy as the isopropanol built up faster than his body could clear it.

The high concentration also tore into the lining of his digestive tract. Hemorrhagic gastritis set in, bringing abdominal pain and vomiting on top of the neurological symptoms — a combination that made his condition look, and feel, far worse than ordinary drunkenness within a short span of time.

Emergency Room Diagnostic Findings

When CB reached the hospital, the diagnostic picture pointed straight to isopropyl alcohol rather than a more lethal toxic alcohol. Clinicians found ketosis without marked metabolic acidosis — ketosis without acidemia — paired with an elevated osmolar gap. That distinction matters clinically: methanol and ethylene glycol poisoning produce dangerous acidosis and demand urgent intervention to block their breakdown into more toxic metabolites, but isopropanol’s main breakdown product, acetone, isn’t nearly as destructive.

Isopropanol is roughly twice as potent a central nervous system depressant as ethanol — and it lingers in the body twice as long.

Ineffectiveness of Standard Antidotes

Because isopropanol absorbs so quickly, gastric emptying and activated charcoal — standard tools for many oral poisonings — were useless by the time CB arrived. Fomepizole, the go-to antidote for methanol and ethylene glycol poisoning, was actually contraindicated here: it works by blocking alcohol dehydrogenase, but doing that in an isopropanol case just traps the parent compound in its already-potent, depressant form for longer instead of letting it convert into the comparatively less dangerous acetone.

With no antidote to reach for, CB’s treatment came down to aggressive supportive care — IV fluid rehydration, airway protection, close hemodynamic monitoring, and simply waiting out the clock while his body slowly cleared both the isopropanol and the acetone it had produced.

The Misinformation Problem Behind the Case

Dr. Hsu built the case study specifically as a rebuke to the viral disinfectant myths circulating alongside the outbreak, the same wave of misinformation that outlets were racing to debunk throughout March 2020. It’s the kind of story that sits alongside other reporting on how the pandemic scrambled public understanding of basic safety information, and it’s a reminder that household chemicals sold for surface cleaning were never designed, tested, or approved for anything resembling human consumption.

Poison control centers around the country were already fielding a spike in calls tied to bleach and disinfectant misuse as coronavirus fears escalated, a trend running parallel to the broader scramble described in coverage of the U.S. seeing 40,000 new COVID-19 cases in a single day. CB’s case is the clinical version of that same panic — a reminder that no amount of isopropyl alcohol swallowed on faith does anything to stop a respiratory virus, and every bit of it does real damage on the way down.