'Zombie Vape Pods': How Taiwan's Teenagers Are Unknowingly Vaping Drugs

A growing number of illegal e-cigarette devices in Taiwan are being laced with etomidate — or cut with cannabis and metomidate — in a combination known on the street as a "zombie vape pod," or "K-pod." As summer vacation approaches, health officials and school administrators say the trend is accelerating among teenagers, many of whom have no idea they are inhaling a controlled substance rather than flavored vaping liquid.

According to the Health Promotion Administration (HPA, 國健署) under the Ministry of Health and Welfare (衛福部), roughly 40,000 teenagers in Taiwan currently use e-cigarettes. A significant share of them, officials say, are drawing on cartridges spiked with etomidate — a fast-acting sedative — sometimes combined with cannabis, metomidate, or other drugs. Experts warn that etomidate takes effect within seconds, and users who get behind the wheel after inhaling it can quickly lose muscle control and consciousness, putting themselves and other road users at risk. Following a recent wave of police crackdowns, officials at the Agency of Corrections (矯正署) say drug-impaired drivers are now straining capacity across Taiwan's prison system.

Taiwan's revised Tobacco Hazards Prevention Act (菸害防制法), which took effect on March 23, 2023, created a "one ban, one regulate" framework for emerging tobacco products. E-cigarettes were banned outright — their manufacture, import, sale, supply, display, advertising, and use are all illegal. Heated tobacco products, by contrast, are conditionally permitted: manufacturers must submit each product for review by an expert committee convened by the HPA before it can go on sale.

Despite the ban, HPA surveys show far more adults and teenagers use e-cigarettes than heated tobacco. Heated tobacco, like a conventional cigarette, still burns a tobacco stick — only the heating method differs. E-cigarettes, however, vaporize liquid available in thousands of flavors, which officials say makes them a far bigger draw for habitual smokers and novelty-seeking teenagers alike, legal status notwithstanding.

That popularity is precisely what illicit vendors have exploited. By swapping ordinary vaping liquid for etomidate — often blended with metomidate, cannabis, amphetamine, or other substances — dealers have turned a consumer-style vape pod into a disguised drug delivery device, designed to slip past police detection. Any cartridge found to contain etomidate is classified by authorities as a "zombie vape pod."

Yen Tsung-hai (顏宗海), director of the Division of Clinical Toxicology at Linkou Chang Gung Memorial Hospital, explains that etomidate is a well-established medical drug: an imidazole-derivative sedative-hypnotic used intravenously as an induction agent for general anesthesia. In hospitals, it is most often given just before emergency intubation to briefly sedate a patient so the procedure can be carried out safely.

Etomidate's advantage in that clinical setting, Yen says, is that it acts almost immediately and — unlike several other induction agents — does not typically cause a significant drop in blood pressure, making it a preferred choice for hemodynamically unstable patients. In hospitals, doses are precisely calculated by anesthesiologists based on a patient's weight and physical condition, which keeps the drug's use safe.

None of those safeguards apply on the street. Recreational users, Yen notes, tend to inhale however much they can get, with no regard for dosage. In the short term, large amounts of etomidate can produce an intense high — euphoria, stimulation, a rush of energy — but that gives way within a short window to involuntary limb tremors, disorientation, coma, and respiratory failure. Repeated use is also linked to adrenal insufficiency, caused by etomidate's suppression of an enzyme involved in cortisol production, along with persistent fatigue and dependency.

Etomidate's plasma half-life — roughly two to five hours — is well documented in medical literature. What isn't documented, Yen says, is how long the drug remains detectable in the body after use, a gap that has become one of the biggest headaches for police trying to make drug-driving cases stick.

Wang Han-yang (王瀚陽), chairman of the National Education Action Alliance (國教聯盟), says two factors explain why etomidate has spread so quickly among teenagers. First, cost and access: he says it can be bought on certain online marketplaces for just a few hundred New Taiwan dollars, cheaper than most other illicit drugs. Second, exposure: platforms including Xiaohongshu (marketed internationally as RedNote) and short-video apps carry content portraying vaping as harmless and stylish, fueling curiosity among younger users.

The World Health Organization has estimated that 10 to 20 percent of adolescents worldwide have used an emerging tobacco product such as an e-cigarette or heated tobacco device. Taiwan's rate is likely lower, but many researchers believe the HPA's official estimate of 40,000 underage vapers understates the true scale of use.

Wang says most teenagers who try a zombie vape pod under peer pressure take a few puffs and stop there. But he points to evidence that the drug holds particular appeal — and carries a higher addiction risk — for neurodivergent children, including those with autism, ADHD, or Tourette syndrome, a pattern he says parents of such children need to watch for closely.

Concealment has also become more sophisticated, according to Wang: students now routinely store their vape hardware separately from etomidate cartridges, leaving teachers with no way to prove a student is using drugs even after confiscating a device. In response, the Ministry of Health and Welfare is drafting amendments that would, for the first time, penalize simple possession of illegal e-cigarettes and related products — not just their import, manufacture, sale, or use in smoke-free areas. Under the proposal, violators would face fines of NT$2,000 to NT$10,000 (roughly US$62 to $310) in addition to confiscation.

Some schools, Wang adds, have gone as far as mounting cameras on motorcycles to patrol blind spots on campus. Even so, distinguishing an ordinary vape from a drug-laced one remains largely impossible without lab testing. For at-risk students, the usual next step is a referral to a juvenile probation officer, followed — with parental consent — by a rapid screening test to check for etomidate or other substances.

Police began using imported saliva-based rapid drug tests late last year, but the kits' accuracy for newer substances like etomidate has proven limited. In practice, that means most drivers who test positive are only the heaviest users — those with high enough concentrations to register despite the test's limitations, sometimes described by officers as "strongly positive."

A more accurate, domestically developed alternative is in the works. Since 2013, the National Science and Technology Council (國科會) and Academia Sinica (中研院) have funded research by Chou Cheng-ying (周呈霙), a professor in the Department of Bio-Industrial Mechatronics Engineering at National Taiwan University, to build a saliva-based rapid test manufactured in Taiwan. Mass production is expected to begin in the second half of this year, with projected accuracy above 90 percent.

Chou says her test uses a competitive immunoassay and can screen for a range of substances beyond etomidate, including metomidate and the etomidate analogues propoxate and isopropoxate. Separate test strips in the same panel can detect ketamine, morphine, cannabis, heroin, methamphetamine, MDMA, and flavored "rainbow"-style drug cigarettes.

Etomidate's rapid clearance from the body creates a recurring enforcement problem, Chou says: a driver can test positive on a roadside saliva swab, then test negative on a urine sample once brought to the police station — well before any sample even reaches a laboratory equipped with liquid chromatography-mass spectrometry (LC-MS) for final confirmation. To close that gap, Chou supports amending the law either to lower the legal detection threshold for etomidate or to classify its principal metabolite, etomidate acid, as a controlled substance in its own right — changes she argues are necessary so that enforcement effort doesn't evaporate along with the drug itself.

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