Among the Next Generation Products (NGPs) with the potential to make a meaningful contribution to the public health concept of tobacco harm reduction (THR) are tobacco-free oral nicotine pouches.
Free from tobacco combustion and the generation of high levels of harmful chemicals and smoke toxicants, high quality nicotine pouches offer those adult smokers who are unwilling or uninterested to stop using combustible cigarettes a potentially harm-reduced alternative. Its appearance and oral method of use is similar to traditional tobacco-containing Scandinavian snus, itself a harm-reduced product supported by favourable epidemiological data in Sweden (see our snus infographic for more information).
One vital difference makes nicotine pouches distinct: they are completely free of tobacco leaf, instead obtaining their nicotine content via high purity pharmaceutical grade nicotine within a matrix of dry powder or a plant fibre-based substrate.
Without tobacco and combustion, their THR potential relative to combustible cigarettes and snus may be even greater.
Building on an encouraging 2021 summary of key scientific findings, our scientists recently finished conducting a further clinical study with more nicotine pouch products from our zoneX/SKRUF Superwhite portfolio.
This ethics-approved clinical trial enrolled 27 adult subjects – all existing tobacco-free oral nicotine pouch or tobacco-snus users – into the study clinic for 4 days in Sweden. They were each randomly assigned to receive a different product per day from the following nicotine products: 14.4mg of nicotine per pouch, 16mg per pouch and 20mg per pouch (the voluntarily maximum nicotine strength limit in the EU, agreed by responsible manufacturers). A tobacco-snus comparator product was also supplied, containing 16.6mg of nicotine per pouch.
Subjects’ blood samples were collected before each product usage session began. These sessions lasted 20 minutes, as recommended in our product usage guidance, after which subjects’ blood samples were again collected and measured. Subjects were also asked to complete a series of questionnaires to assess satisfaction and product liking levels, and to help us understand if these products help to reduce urges to use nicotine. The study aims involved:
The results were as follows:
Under the conditions of study procedure (20 mins per session, up to 20mg per pouch), no significant negative impacts on subjects’ blood pressure, pulse, heart measurements or general wellbeing were observed. There were a small number of adverse effects (AEs) recorded as possibly related to the product, though these were all mild and commonly reported for nicotine-containing products.
The graph below helps bring the data to life.
After initial use of each product, the subjects urge to use nicotine reduced significantly when compared to baseline levels, with the maximum reduction in urges (TE-max) occurring at around 20-25 minutes – illustrated by the graph below.
Subject questionnaire results also included encouraging scores relating to product satisfaction, reward and relief across all pouch strengths.
Overall, these latest encouraging results positively contribute to the existing scientific evidence base substantiating the favourable short-term safety and tolerability, efficient blood nicotine delivery and user satisfaction scores of zoneX/Skruf Superwhite tobacco-free oral nicotine pouches with a pouch strength of up to 20mg.
Please look out for further research soon.
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