Today’s vapes contain far more than nicotine. Most commercial and counterfeit vape products contain a complex mix of chemicals, including propylene glycol, vegetable glycerin, heavy metals like lead and nickel, volatile organic compounds, and flavoring additives linked to lung damage.
Counterfeit and unregulated cartridges may also contain synthetic cannabinoids, pesticides, or unknown fillers. Fentanyl, methamphetamine, synthetic cannabinoids like Spice and K2, and ketamine have all been documented in unregulated vape products, often with no visible way to detect them [1].
Understanding what’s actually being inhaled is the first step toward making an informed decision about use.
What Are Vapes?
Vapes, also called e-cigarettes, vape pens, mods, or disposables, are battery-powered devices that heat a liquid solution into an aerosol that the user inhales. Unlike traditional cigarettes, there is no combustion involved, which is why vaping was initially marketed as a safer alternative to smoking. However, that claim has since been complicated by research showing that vape aerosol is not simply water vapor; it contains fine particles, volatile compounds, and heavy metals [2].
Modern vapes come in dozens of formats, from sleek, USB-sized disposables like Elf Bars to refillable pod systems. The disposable format in particular has driven a surge in use among younger adults and teens because of its low cost, wide availability, and discreet design.
Many fit easily in a pocket, produce minimal odor, and can be used in settings where traditional smoking would be obvious. That accessibility is a feature by design, and it’s a significant part of why nicotine dependence through vaping can develop faster and more quietly than most people expect.
What Is Nicotine?
Nicotine is a stimulant and a highly addictive substance. It raises blood pressure, spikes adrenaline, and increases heart rate. What makes vapes particularly effective at delivering it is efficiency; many e-cigarette users end up getting more nicotine than they would from a typical tobacco product like cigarettes, either through higher-concentration cartridges or by increasing the device’s voltage. 
For anyone under 25, the risks are higher. The CDC has stated that nicotine can harm the developing brains, specifically affecting mood, impulsive behaviors, learning, and attention span. 
What Chemicals Other Than Nicotine Are in Vapes?
The base ingredients in most e-liquids are propylene glycol and vegetable glycerin, common food additives considered safe to eat. Not necessarily safe to inhale repeatedly. When heated, they break down into formaldehyde and acetaldehyde, both carcinogens that, over time, can cause inflammation of the airways and damage to lung tissue [3]. 
The heating coils in e-cigarettes are typically made of metal alloys, including nickel, chromium, and lead, and these metals can enter the aerosol. 
A 2024 study confirmed that regular vapers had biomarkers of cadmium, lead, and uranium exposure in their urine, with frequent users showing higher lead levels and sweet-flavor users showing higher uranium levels [4]. 
Chemicals in Flavored E-liquids
At least 180 chemicals are now known to be blended in various amounts to produce specific flavors in e-liquids.  Many of these were developed for the food industry and have solid safety records for ingestion. Inhalation is a distinct exposure pathway, and very few of these compounds have ever been tested for it.
Researchers using AI to model the pyrolysis (chemical breakdown) products of popular flavored vapes predicted that the process would produce 127 acutely toxic chemicals, 153 health hazards, and 225 irritants, with fruit, candy, and dessert flavors producing the most volatile chemicals, such as formaldehyde and propionaldehyde [5].
Disposable vapes imported from overseas, particularly those sold at gas stations, smoke shops, and online, often lack meaningful ingredient disclosure. Some e-liquids sold as nicotine-free have been found to contain nicotine at high levels. 
Labeled concentrations often don’t match what’s actually in the product. Lab analysis of vapes from unregulated markets has found a wide range of substances, including synthetic cannabinoids, amphetamines, kratom, ketamine, and other compounds that users had no idea they were consuming [1]. 
THC Vapes and the Fentanyl Crisis
Law enforcement and school officials across the country are reporting incidents of fentanyl found in e-cigarettes and THC vape cartridges.  A juvenile court judge issued a warning after a child nearly died from a fentanyl-laced vape and faced potential permanent organ damage. 
Dealers may mix fentanyl into THC or nicotine cartridges to boost potency cheaply, leading to contaminated products that users unknowingly consume [6]. 
This is not a widespread epidemic, unlike counterfeit pill contamination. But it’s real, it’s been confirmed in multiple documented incidents, and the consequences of even a single exposure for someone with zero opioid tolerance can be fatal.
What This Actually Means: Is Vaping Safe?
The risk of vaping depends heavily on what is being inhaled and where it comes from. A regulated nicotine product from a licensed retailer is a meaningful step down from cigarettes in terms of known toxic exposure. An unlicensed THC cart bought off Snapchat is an entirely different conversation.
If vaping has moved from occasional use to something that is difficult to stop, or if it’s functioning as a crutch for stress or mental health distress, that’s worth taking seriously.
Recovery from nicotine dependence is possible, and there are evidence-based options that make the process significantly more manageable, from medication-assisted approaches like Nicotine Replacement Therapy (NRT) to behavioral therapy that addresses the emotional patterns driving the habit.
Substance Use Treatment in Michigan That Includes Support for Nicotine and Vaping Cessation
Nicotine dependence doesn’t pause when someone enters treatment for another substance, and at Rushton Recovery, we don’t ignore it. While we don’t specialize in standalone nicotine or vaping cessation, clients already in our detox or residential program receive support for nicotine dependence as part of their broader recovery care.
Our 30-acre private campus in South Lyon, Michigan, provides the space, clinical depth, and individualized attention that make addressing multiple layers of dependence, including nicotine, possible in a way that feels manageable rather than overwhelming. For professionals and adults who have been relying on vaping to manage stress, anxiety, or the demands of daily life, treatment at Rushton creates the conditions to begin untangling all of it.
If you’re already considering treatment and nicotine or vaping dependence is part of the picture, our admissions team is happy to talk through what support looks like here.
Frequently Asked Questions
Can you feel the difference if your vape cart contains fentanyl or synthetic cannabinoids?
Usually not, and that’s what makes it so dangerous. Fentanyl is odorless and tasteless, and synthetic cannabinoids like K2 and Spice can mimic a cannabis-like effect before triggering unpredictable reactions. Many people who have inhaled contaminated cartridges had no warning before symptoms hit. By the time something feels wrong, it can escalate within minutes.
Are dispensary vape carts safer than carts bought informally?
Generally, yes, but not entirely risk-free. Licensed dispensary products are subject to state testing requirements, making contamination with fentanyl or synthetics significantly less likely. The real risk lies in unregulated carts purchased through social media, friends, or unlicensed vendors, where there is no quality control whatsoever. Counterfeit versions of popular dispensary brands are also increasingly common and nearly impossible to distinguish visually.
Is vaping nicotine actually harder to quit than smoking cigarettes?
For many people, yes. Modern disposable vapes deliver nicotine at concentrations significantly higher than traditional cigarettes, sometimes three to four times higher. The ease of use, discreet format, and constant availability make the habit harder to interrupt. The brain becomes conditioned to frequent, low-effort hits throughout the day, creating a dependence pattern that can be more deeply embedded than traditional smoking.
Can vaping trigger anxiety or worsen mental health even without other substances?
Yes, and this is underreported. Nicotine directly stimulates the adrenal glands, triggering cortisol and adrenaline release. While it may feel calming in the moment, regular vaping keeps the nervous system in a mild but chronic state of stimulation. Over time, this can worsen baseline anxiety, disrupt sleep architecture, and create a cycle where vaping feels like the solution to the very symptoms it’s causing.
What are fake carts, and how do people end up with them without knowing?
Fake carts are counterfeit vape cartridges manufactured to look exactly like legitimate branded products, with the same packaging, same labeling, same design. They are produced at scale and sold through informal channels at prices that seem normal. Most people buying them believe they are getting a real product. Without laboratory testing, there is no reliable way to verify contents, and contamination with harmful substances, including fentanyl, has been widely documented.
If someone vapes heavily and enters addiction treatment, does nicotine dependence get addressed?
It depends on the program. Many residential treatment centers allow vaping or smoking during treatment and do not address nicotine dependence directly, prioritizing primary substance use first. However, research increasingly shows that quitting nicotine alongside other substances can actually improve long-term recovery outcomes, particularly for mood stability and stress regulation. It’s worth asking any treatment program upfront what their policy and support look like around nicotine during care.
Sources
[1] UNODC. 2025. Increasing range of drugs and new psychoactive substances found in vaping products.
[2] National Academies of Science. 2018. Public Health Consequences of E-Cigarettes.
[3] American Lung Association. 2025. Vapor Hiding Dangerous Ingredients.
[4] Dai, D. (2025). Biomarkers of metal exposure in adolescent e-cigarette users: correlations with vaping frequency and flavouring. Tobacco control, 34(5), 579–584.
[5] The Guardian. 2024. Chemicals in vapes could be highly toxic when heated, research finds. [6] PharmCheck. 2023. The Alarming Surge of Fentanyl-Laced Vapes: A Lethal Combination.