Nicotine pouches contain a short list of ingredients: nicotine, fillers that give the pouch its shape, pH adjusters that help your body absorb the nicotine, flavorings, and sweeteners. There’s no tobacco leaf inside. The small white pouch itself is made of microfiber, and everything packed into it is a powder or, in some formulations, a moist mixture.
Nicotine: Tobacco-Derived or Synthetic
The active ingredient is nicotine, and it comes from one of two sources depending on the brand. Some products extract nicotine directly from tobacco plants, while others use nicotine manufactured in a laboratory. The end molecule is the same either way, but the source matters for trace contaminants. Products using tobacco-derived nicotine can contain very small amounts of tobacco-specific nitrosamines, compounds formed during tobacco processing that are linked to cancer.
A study published in Tobacco Control measured these nitrosamines across dozens of nicotine pouch products. The highest level found was 13 nanograms per pouch, which is extremely low compared to traditional snus (up to 1,190 nanograms per pouch) or cigarettes (33 to 323 nanograms per cigarette). Synthetic nicotine products would theoretically contain none, though independent testing across all brands is limited.
Nicotine concentrations vary widely. Products on the U.S. market typically range from about 2 to 8 milligrams per pouch, but a broader survey by the German Federal Institute for Risk Assessment found products ranging from 1.79 to 47.5 milligrams per pouch across international markets, with some reaching 50 milligrams.
Fillers That Create the Pouch’s Texture
Most of the material inside a nicotine pouch isn’t nicotine at all. It’s filler, the bulk ingredient that gives the pouch its size and feel against your gum. The most common fillers are microcrystalline cellulose (a refined plant fiber used widely in food and pharmaceuticals) and maltitol, a sugar alcohol. Some formulations also include plant fibers to add body.
These fillers are food-grade and functionally inert. They don’t deliver nicotine or flavoring on their own. Their job is structural: making the pouch large enough to sit comfortably between your lip and gum while holding the active ingredients in place. Some products also include a stabilizer called hydroxypropyl cellulose, which helps keep the powder consistent over time so it doesn’t clump or degrade before use.
pH Adjusters and Nicotine Absorption
This is the ingredient category most people don’t expect, and it plays a critical role in how the product works. Nicotine pouches contain alkaline compounds, most commonly sodium carbonate and sodium bicarbonate (baking soda), that raise the pH inside your mouth at the point of contact. Some formulations use calcium chloride instead.
Why this matters: nicotine exists in two chemical forms, and only the “freebase” form passes easily through the mucous membranes in your mouth. At a neutral or slightly acidic pH, most of the nicotine stays in its salt form and absorbs poorly. By raising the local pH to a more alkaline level, these adjusters convert more nicotine into freebase form, which crosses into your bloodstream faster and more efficiently. Without them, you’d absorb significantly less nicotine from the same pouch. This is the same basic chemistry behind how traditional smokeless tobacco delivers nicotine, just achieved with food-grade alkaline salts instead of the natural alkalinity of cured tobacco.
Flavorings and Sweeteners
Every major nicotine pouch brand uses artificial sweeteners, and chemical analysis has confirmed their presence across all tested U.S. products. The two sweeteners found are acesulfame potassium (acesulfame-k) and sucralose, both widely used in diet foods and beverages. ZYN and on! brand products use acesulfame-k exclusively. Velo products originally contained sucralose, though some Velo product lines acquired from other manufacturers use acesulfame-k instead.
Flavorings are listed simply as “food grade flavorings” on most packaging, which tells you very little. Mint and wintergreen are the most popular flavor categories, but the specific flavor compounds are rarely disclosed in detail. One notable finding: researchers detected a synthetic cooling agent called WS-3 in ZYN’s “Chill” flavor. This compound mimics the cooling sensation of menthol without the minty smell, and it has also been found in e-cigarette liquids and in cigarettes marketed as “non-menthol.” It’s not harmful in the amounts used, but its presence illustrates that “flavoring” can mean more than simple mint extract.
Moisture and Other Minor Ingredients
Nicotine pouches come in dry and moist versions. Moist pouches have water added during manufacturing, which means they start releasing flavor and nicotine more quickly when you place them. Dry pouches absorb saliva first, so there’s a slight delay before the ingredients activate. The choice between them is mostly about preference: moist pouches feel softer and act faster, while dry pouches tend to last longer and feel less noticeable.
Some moist formulations also contain glycerin as a humectant to retain moisture, sodium chloride (table salt) for flavor balance, and monoglycerides, which act as emulsifiers to keep the wet and dry ingredients blended evenly. None of these are unique to nicotine products. They’re standard food manufacturing ingredients.
What the Ingredients Do to Your Mouth
Even though nicotine pouches use food-grade ingredients, the combination of chemicals and physical pressure in one spot can affect your oral tissue over time. Clinical case reports have documented gum recession and white patches (leukoplakia) appearing at the exact spot where users habitually place their pouches. Both cases involved young, otherwise healthy men, and the damage was site-specific, not generalized across the mouth.
The likely mechanism is a combination of chronic mechanical pressure from the pouch itself and localized chemical exposure from the alkaline pH adjusters and nicotine. Gum recession means the gum tissue pulls back, exposing more of the tooth root. Leukoplakia, the white patches, is more concerning because in the context of smokeless tobacco products, it has been identified as a potentially premalignant condition. Rotating the placement of your pouch so it doesn’t always press the same spot may reduce this risk, though no long-term studies have confirmed that approach.
How Nicotine Pouches Are Regulated
The FDA regulates nicotine pouches as tobacco products, regardless of whether the nicotine is synthetic or plant-derived. As of 2025, the agency has authorized 26 specific nicotine pouch products through its premarket tobacco product application process, including six on! PLUS products that completed review in what the FDA described as record time. Products that haven’t received authorization can still be sold while their applications are pending, which means the market includes both reviewed and unreviewed products. Authorization doesn’t mean the FDA considers them safe. It means the agency determined that allowing those specific products on the market is “appropriate for the protection of public health,” a lower bar that weighs population-level effects including whether the product might help adult smokers move away from cigarettes.