Do People Smoke Pills? The Dangers of Inhalation

Smoking pills is a real and rapidly growing practice, driven largely by the flood of counterfeit opioid tablets into the illicit drug supply across the United States. In surveys of people who use street pills in the Pacific Northwest, as many as 94 percent reported smoking them rather than swallowing or injecting. The practice carries a distinct set of dangers that many users underestimate, from toxic chemical byproducts created by heating pharmaceutical fillers to an overdose risk that persists regardless of how the drug enters the body.

Which Pills Are Being Smoked and Who Is Doing It

The pills most commonly smoked are counterfeit oxycodone tablets, often stamped with “M30” to mimic legitimate 30-milligram oxycodone. On the street they go by names like “blues,” “dirty oxys,” or “pressed thirties.” Despite the branding, most contain little or no oxycodone. Instead, they are pressed with illicitly manufactured fentanyl, sometimes mixed with other substances like methamphetamine or benzodiazepines. In one analysis of hospital cases tied to suspected counterfeit M-30 pills, at least one substance other than fentanyl was detected in over 90 percent of patients.¹

The demographic picture is shifting. Inhalation was the most common route of administration among patients presenting with acute opioid withdrawal in that same hospital data set, reported by about 63 percent of cases. The pattern varied by age: younger teens were more likely to swallow the pills, while adults aged 25 to 34 were overwhelmingly inhaling them, with nearly 80 percent reporting that route.¹ In qualitative research, many people described first trying the counterfeit pills within the past year, often because heroin or genuine pharmaceutical opioids became harder to find.²

In a large survey of more than 800 people who inject drugs across two Pacific Northwest cities, two-thirds reported using street pills, and among those pill users, 94 percent smoked them.³ That number underscores how dominant smoking has become as a route of administration for counterfeit fentanyl pills in parts of the western United States.

Why People Smoke Pills Instead of Swallowing or Injecting Them

The shift toward smoking is not random. People describe a cluster of practical and perceived-safety reasons for choosing inhalation over injection. In interviews conducted in San Francisco, people who had previously injected heroin explained that they switched to smoking fentanyl because they were running out of usable veins after years of injection. Once they tried smoking, many reported noticing benefits: the high felt different, their physical health improved compared to when they were injecting, they spent less money, and they experienced less social stigma.⁴

A similar picture emerged from research in Vancouver. People described smoking as easier, more discreet, and something that gave them a greater sense of control over how much drug they consumed at a time.⁵ In a European harm-reduction program that distributed smoking foils to encourage switching away from injection, roughly six in ten participants said they believed smoking was healthier. About a third specifically cited a reduced risk of hepatitis or HIV, and another third mentioned avoiding overdose as an important motivator.⁶

Some of those perceptions hold a kernel of truth. Not sharing needles does eliminate a major route of bloodborne disease transmission. But the belief that smoking eliminates overdose risk is dangerously wrong, as the evidence below makes clear.

What Heating a Pill Actually Produces

A pharmaceutical pill is not designed to be burned. Beyond whatever active drug it contains, every pill includes binders, fillers, coloring agents, and coatings that hold the tablet together and control how it dissolves in your stomach. When you put a flame under a pill on a sheet of foil, you are not simply vaporizing a single drug. You are heating a cocktail of substances to temperatures that cause them to break apart and recombine into new chemical compounds.

This process, called pyrolysis, generates a range of thermal decomposition products that depend on the specific drug, whatever fillers or contaminants are present, how hot the flame is, and whether the environment is oxygen-rich or oxygen-poor. A comprehensive review of pyrolysis research found that many of these breakdown products are themselves pharmacologically active or outright toxic.⁷ In plain terms, the smoke you inhale contains not just the drug you intended to take but a soup of byproducts whose effects are poorly understood and often harmful. With counterfeit pills in particular, the user has no idea what fillers or cutting agents were used during manufacture, so the pyrolysis products are even more unpredictable.

Fentanyl itself vaporizes at lower temperatures than many other drugs, which is part of why smoking counterfeit fentanyl pills “works” from the user’s perspective. But the fillers packed around it do not vaporize cleanly. Some of those insoluble particles make it deep into the lungs, where the body has no good way to clear them.

Damage to the Lungs and Airways

The respiratory consequences of smoking drugs fall into two broad categories: immediate injuries and damage that accumulates over time.

On the acute side, the high temperature of inhaled vapor can burn the lining of the mouth, throat, and upper airway. Clinical case reports have documented burns to the upper aerodigestive tract from smoking freebase cocaine, and similar thermal injuries occur with any drug smoked off foil or through a hot pipe.⁸ In crack cocaine users specifically, an acute respiratory syndrome nicknamed “crack lung” has been reported within 48 hours of inhalation, featuring fever, coughing up blood, difficulty breathing, and fluid-filled lungs visible on chest X-rays. The extreme heat of the vapor and the presence of impurities, along with cocaine’s tendency to constrict blood vessels locally, are thought to explain the alveolar damage.⁹

Chronic use produces a wider catalog of harm. A review of stimulant-related lung injuries found that both inhaled and intravenous forms of abused substances can damage virtually every part of the respiratory tract, leading to conditions including pulmonary hypertension, collapsed lung, interstitial lung disease, bleeding into the air sacs, reactive airway disease, granulomatous inflammation, and recurrent infections.¹⁰ While much of this research focused on crack cocaine and methamphetamine, the underlying mechanisms apply to any drug that is heated and inhaled: thermal injury, particle deposition, chemical irritation, and immune-system activation in the lungs all contribute.

People who smoke pills daily for months or years are essentially subjecting their airways to repeated low-grade chemical burns while depositing insoluble filler particles into tissue that evolved to handle nothing heavier than air and the occasional dust grain. The lungs can compensate for a while, but the damage is cumulative.

Overdose Risk and the “Hot Spot” Problem

One of the most dangerous misconceptions among people who smoke fentanyl pills is that smoking protects against overdose. Because the drug reaches the brain faster through injection and more slowly through inhalation, users often assume they can titrate their dose and stop before taking too much. Qualitative research directly captured this belief, with the study’s own title quoting a participant: “I don’t know how you can overdose smoking them.”¹¹

The reality is grimmer. Counterfeit pills are not manufactured under pharmaceutical conditions. The fentanyl is not evenly distributed throughout the tablet. Drug enforcement data from Arizona found that seized counterfeit pills contained an average of 2.5 milligrams of fentanyl each, but the range ran from 0.03 milligrams to 5.0 milligrams in a single pill. Nationally, an estimated six in ten seized pills contained at least 2 milligrams, a dose considered potentially lethal for someone without tolerance.¹¹

Users describe the phenomenon of “hot spots,” where fentanyl concentrates unevenly in part of the pill. One participant explained it bluntly: when you hit a hot spot, “it takes you out. That can happen to anybody. It could be your hundredth time smoking. It could be your thousandth. It could be your first.” The same research documented that some participants smoked upward of 20 or even 50 pills per day, and those using larger quantities often smoked two or more pills at once, compounding the exposure risk from any single hot spot.¹¹

Researchers also noted a grim historical pattern. When counterfeit fentanyl pills first appeared in Arizona’s drug market, many consumers treated them like genuine pharmaceutical pills and swallowed them. That approach delivered the full contents of the pill at once into the digestive system, and participants viewed this “inappropriate” route as one of the primary drivers of the initial spike in overdose deaths during the early spread of blues. Smoking offered somewhat slower absorption, but it never made the drug safe.

Online Awareness and Anxiety About Contaminated Pills

The prevalence of fentanyl in counterfeit pills is not a secret within drug-using communities. An analysis of Reddit posts found that more than a third of all subreddit discussions mentioning fentanyl were specifically about pressed M30 pills. Within those posts, suspicion of contamination was the dominant theme, appearing in over half. Another 40 percent of posts expressed anxiety about what the pills actually contained, and about 30 percent discussed strategies for testing or mitigating risk.¹²

This awareness, while a form of grassroots harm reduction, has not translated into people stopping. The pills are cheap, widely available, and powerfully reinforcing. When genuine pharmaceutical opioids are difficult to find, counterfeit fentanyl pills fill the gap, and smoking is the default way people consume them in the western United States.² Illicitly manufactured fentanyl remains the primary driver of overdose mortality in the country, and the western states have seen significant increases tied specifically to these counterfeit pain pills.¹¹

Prescription Stimulants and Pill Abuse

Counterfeit fentanyl pills are not the only tablets people misuse by altering the route of administration, though the pattern with stimulants looks different. In a large community survey on ADHD medication misuse, the most commonly abused medications were mixed amphetamine salts (Adderall), its extended-release version, and methylphenidate (Ritalin). The dominant method of misuse was crushing pills and snorting the powder, reported by 75 percent of people who abused stimulants.¹³

Snorting and smoking are both forms of inhalation in the broad sense, but they deposit the drug in different places. Snorting delivers powder to the nasal mucosa, while smoking delivers vaporized drug to the lungs. Both bypass the slow absorption of the gut and get the substance into the bloodstream faster than swallowing. With prescription stimulants, snorting is far more common than smoking because the tablet formulations do not vaporize efficiently. But the practice still carries its own dangers: nasal tissue damage, unpredictable dosing when crushing extended-release formulations, and a faster, more intense high that increases the potential for dependence.

Accidental pill aspiration is another risk worth mentioning, though it involves breathing in a physical tablet rather than drug vapor. Among adults, pills account for about 7 percent of all foreign-body aspirations. When a pill lodges in the airway, it can cause obstruction, tissue granulation, post-obstructive pneumonia, and bronchiectasis if not removed promptly.¹⁴

Secondhand Exposure on Public Transit

When someone smokes a pill in an enclosed space, the drug residue does not stay with the user. Researchers in the Pacific Northwest measured fentanyl and methamphetamine levels in the air and on surfaces of buses and train cars. They collected 78 air samples and 89 surface samples from vehicles operated by four transit agencies. Methamphetamine was detected in every single air sample and 98 percent of surface samples. Fentanyl was found in a quarter of air samples and 38 percent of surface samples.¹⁵

The highest fentanyl air concentration recorded during a four-hour sampling period would have exceeded the occupational exposure limit set for an eight-hour workday if conditions had remained constant for the full shift. Transit operators have reported acute health symptoms and safety concerns related to these exposures. While a single brief ride on a bus where someone recently smoked a pill is unlikely to cause a passenger to overdose, repeated daily exposure over an entire work shift is a different matter. The study’s authors emphasized the need to protect transit workers from chronic secondhand drug exposure.¹⁵

The environmental contamination finding also illustrates something broader about how pill smoking differs from pill swallowing. When a drug is swallowed, whatever is not absorbed by the body eventually leaves through normal waste. When it is smoked, a meaningful fraction enters the surrounding air and settles on every surface nearby. In shared spaces like shelters, vehicles, or apartments, that turns a private act of drug use into an involuntary exposure for bystanders.

Why the “Safer Than Injecting” Framing Falls Short

Harm-reduction programs have sometimes encouraged smoking over injection, and there is evidence this reduces certain specific risks. Not sharing needles eliminates one route of HIV and hepatitis C transmission. Avoiding injection prevents abscesses, collapsed veins, and endocarditis. Those are real gains. But framing smoking as “safer” can obscure its own substantial dangers, particularly when the drug being smoked is fentanyl from an unregulated supply.

The overdose risk from hot spots in counterfeit pills does not care whether the user swallows, injects, or smokes. The respiratory damage from chronic inhalation of heated filler materials accumulates silently. The thermal decomposition products from burning unknown binders are unstudied in most cases, meaning users are inhaling compounds whose long-term toxicity is simply unknown.⁷ And the secondhand exposure to people in shared environments adds a layer of harm that injection does not produce.

For anyone who encounters someone experiencing an overdose after smoking pills, the response is the same as for any opioid overdose: call emergency services and administer naloxone if available. The route of administration does not change the reversal protocol, only the false sense of security that may have delayed the call for help.

1
MMWR Morbidity and Mortality Weekly Report. Suspected Counterfeit M-30 Oxycodone Pill Exposures and Acute Withdrawals Reported from a Single Hospital — Toxicology Investigators Consortium Core Registry, U.S. Census Bureau Western Region, 2017–2022
2
PubMed Central. “They say it’s fentanyl, but they honestly look like Perc 30s”: Initiation and use of counterfeit fentanyl pills
3
PubMed Central. Fentanyl use among people who inject drugs in two large Pacific Northwest metropolitan areas
4
PubMed Central. Transition from Injecting Opioids to Smoking Fentanyl in San Francisco, California
5
PubMed Central. A qualitative study exploring motives for the transition from injecting to smoking drugs in Vancouver, British Columbia
6
PubMed Central. SMOKE IT! Promoting a change of opiate consumption pattern – from injecting to inhaling
7
PubMed. Pyrolysis of drugs of abuse: a comprehensive review
8
PubMed. Mucosal injuries of the upper aerodigestive tract after smoking crack or freebase cocaine
9
PubMed. The large spectrum of pulmonary complications following illicit drug use: features and mechanisms
10
SpringerLink (Clin Rev Allergy Immunol). Stimulants and the lung: review of literature
11
PubMed Central. “I don’t know how you can overdose smoking them:” Perceptions of overdose risks among persons who use illicit fentanyl-laced counterfeit pills
12
PubMed Central. Fentanyl in Pressed Oxycodone Pills: A Qualitative Analysis of Online Community Experiences with an Emerging Drug Trend
13
PubMed Central. Abuse of Medications Employed for the Treatment of ADHD: Results From a Large-Scale Community Survey
14
Chest. “Pills” and the Air Passages
15
PubMed Central. Assessing fentanyl and methamphetamine in air and on surfaces of transit vehicles