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Nicotine pouches helped smokers cut down whether or not flavors were allowed, in a 400-person trial
Flavors are the most fought-over feature of nicotine pouches. In a six-week trial, smokers given pouches cut their cigarettes by about half either way; flavors mainly helped those who were struggling.
- A remote, six-week randomized trial in 400 adults who smoked at least five cigarettes a day and wanted to switch.
- Groups got flavored pouches, unflavored pouches only, or unflavored first and flavors after three weeks.
- About half in every group halved their cigarettes, and about 9% stopped smoking entirely for a week.
- Flavored and unflavored groups did about the same on the main measures of smoke exposure.
- Flavors helped those who had not cut down by week three, but six weeks says nothing about long-term effects.
Nicotine pouches have gone from obscure to ubiquitous in a few years. Tucked between gum and lip, they deliver nicotine without tobacco leaf or smoke, and they come in a long list of flavors, from mint to fruit. Those flavors are the heart of the argument over them: public health groups worry they draw in teenagers, while makers say they help adult smokers leave cigarettes behind.
A randomized trial published in Drug and Alcohol Dependence tested the adult half of that argument directly. Among 400 smokers given pouches for six weeks, cigarettes fell by a similar amount whether flavors were on offer or not.
Why getting smokers off cigarettes matters
MedlinePlus is blunt about the stakes: besides being the leading cause of cancer in the United States, smoking tobacco harms most organs of your body. It is equally honest about the difficulty, noting that it can be difficult to quit smoking.
Most of the harm comes from burning tobacco, not from nicotine itself, which is why products that deliver nicotine without smoke are pitched as a way down for people who cannot or will not quit outright. Whether flavors make that switch easier is a live regulatory question.
How the nicotine pouch trial worked
The trial ran remotely for six weeks with adults who smoked at least 5 cigarettes a day with interest in replacing cigarettes with NPs, meaning nicotine pouches. Participants were randomized to immediate access to seven NP flavors, unflavored-only access for six weeks, or unflavored-only for three weeks followed by flavor access.
The main measure was carbon monoxide in the breath, a gas that comes from burning tobacco and drops when people smoke less. Breath tests matter because people tend to under-report how much they smoke.
What happened to smoking with and without flavors
The headline is that flavors made little difference to how much people cut down. At six weeks, the share who halved their breath carbon monoxide was about 14% in both the flavored and unflavored groups, and about half of each group halved the number of cigarettes they smoked.
Complete stopping was uncommon but not rare. CO-verified abstinence was 9.3% vs 8.9% in the flavored and unflavored groups, confirmed by breath test, which is a meaningful number for six weeks without any other quit support.
Flavors did make a difference in two places. Flavor increased smoke-free days early, with attenuation over time, so the flavored group got off to a faster start that faded. And among people who had not cut down with unflavored pouches by week three, switching to flavors raised the share who halved their cigarettes by week six from about 19% to 33%.
Why the flavor finding cuts both ways
For regulators, the result is useful precisely because it is mixed. Flavors were not necessary for most smokers to cut down with pouches, which weakens the argument that banning them would strand adult smokers. But flavors did help a subgroup who were struggling, which is the group a harm-reduction strategy most needs to reach.
The authors put it carefully: NP access supported cigarette reduction regardless of flavor availability, while flavors may speed up smoke-free days and help people who do not respond to unflavored products alone.
What a six-week nicotine trial cannot show
Six weeks is short. It says nothing about whether people stayed off cigarettes, whether they ended up using both products long term, or what years of pouch use does to health. It also says nothing about young people who have never smoked, which is where most of the concern about flavors lies.
The trial tested one brand’s pouches, participants were volunteers already interested in switching, and there was no comparison with approved stop-smoking medicines. Cutting down is not the same as quitting, and most of the health benefit of stopping smoking comes from stopping completely.
What this changes for smokers and for flavor rules
For smokers, the evidence-backed route out remains approved stop-smoking medicines combined with support, which free quit services can arrange. This trial suggests pouches can help some smokers cut down, with or without flavors, but it does not show they beat those options.
For the flavor debate, it offers one clear data point on the adult side: most smokers switching to pouches did not need flavors to reduce their smoking, but some who were struggling benefited from them. How to weigh that against the risk to teenagers is a question this trial was never designed to answer.
People also ask
What did the study find?
At week 6, flavored and unflavored groups did not differ in at least 50% reduction in expired carbon monoxide (14.3% against 14.2%), at least 50% cigarette reduction (50.3% against 51.6%) or carbon monoxide-verified abstinence (9.3% against 8.9%). Flavors increased smoke-free days early, with attenuation over time. Among week 3 non-responders, delayed flavor access increased at least 50% cigarette reduction at week 6 (33.3% against 18.6%).
What are nicotine pouches?
Small pouches of nicotine powder, without tobacco leaf, that sit between the gum and lip. The nicotine is absorbed through the lining of the mouth, with no smoke.
How was smoking measured?
By carbon monoxide in the breath, a gas that comes from burning tobacco, alongside participants' own counts of cigarettes. Breath tests confirm what people report.
Are nicotine pouches safe?
They avoid smoke, which carries most of the harm of cigarettes, but they still deliver addictive nicotine and their long-term effects are not well studied. This trial did not assess safety over time.
Why do flavors matter so much?
Flavors make products more appealing to adults trying to switch, but also to young people who have never smoked. That tension is at the center of regulation, and this trial speaks only to the adult side.
Should smokers use nicotine pouches to quit?
Approved stop-smoking medicines and support services have the strongest evidence. Anyone considering other products should talk it through with a doctor or quit service. This is general information rather than medical advice.