Zyn pouches contain nicotine packed inside a small pouch made from plant-based fibers, along with 12 other ingredients that control texture, absorption, flavor, and shelf life. There is no tobacco leaf in the pouch. The nicotine itself is derived from tobacco plants but arrives in a purified, isolated form called nicotine bitartrate dihydrate.
The Complete Ingredient List
Every Zyn pouch contains the same core set of ingredients, regardless of flavor or strength. Here’s what’s inside:
- Nicotine bitartrate dihydrate: the active ingredient, a salt form of nicotine that allows for controlled release
- Microcrystalline cellulose: a plant fiber derived from wood pulp or cotton that gives the pouch its structure
- Hydroxypropyl cellulose: a binding agent that helps control moisture
- Maltodextrin: a starch-based powder that adds volume to the filling
- Gum arabic: a natural stabilizer that affects texture
- Sodium carbonate: a pH adjuster
- Sodium bicarbonate: a second pH adjuster (essentially baking soda)
- Acesulfame potassium: a zero-calorie artificial sweetener
- Sucralose: a second zero-calorie sweetener
- Natural and artificial flavorings: varies by product (mint, cinnamon, citrus, coffee, etc.)
- Potassium sorbate: a common food preservative
- Water: controls moisture and nicotine release rate
The largest component by weight, after nicotine, is microcrystalline cellulose. This is the same plant fiber used in pharmaceutical tablets and processed foods. It’s food-grade and widely considered inert, meaning your body doesn’t absorb or react to it in a meaningful way.
Where the Nicotine Comes From
Zyn’s nicotine is extracted from tobacco plants, then purified and bonded to tartaric acid to form a stable salt. This is different from chewing tobacco or snus, where nicotine stays embedded in shredded or ground tobacco leaf. In a Zyn pouch, the nicotine has been separated from the plant material entirely. The CDC notes there is little chemical difference between tobacco-derived nicotine and synthetic nicotine produced in a lab, though Zyn uses the tobacco-derived version.
Zyn comes in two nicotine strengths sold in the U.S.: 3 milligrams and 6 milligrams per pouch. After you place a pouch between your lip and gum, nicotine typically reaches peak blood concentration in about 15 to 20 minutes, based on pharmacokinetic studies of nicotine pouches at comparable strengths.
Why pH Adjusters Matter
Two of Zyn’s ingredients, sodium carbonate and sodium bicarbonate, exist purely to make the nicotine absorb more efficiently through the lining of your mouth. Nicotine crosses mucous membranes faster in an alkaline (higher pH) environment. Without these pH adjusters, much of the nicotine in the pouch would simply sit there or get swallowed into your stomach, where absorption is slower and less predictable.
This is a deliberate engineering choice. The pH adjusters ensure that each pouch delivers a consistent nicotine experience from start to finish, rather than an unpredictable trickle. Other nicotine pouch brands use the same approach, sometimes with more aggressive alkalizing agents that create a faster, stronger hit.
What the Sweeteners Do
Zyn uses two artificial sweeteners, acesulfame potassium and sucralose, in amounts ranging from roughly 0.3 to 0.9 milligrams per pouch. These are the same zero-calorie sweeteners found in diet sodas and sugar-free gum. They show up even in products marketed as “unflavored.”
The sweeteners aren’t just about taste preference. Research published in Nicotine & Tobacco Research found that the sweetness reduces the naturally harsh, bitter sensation of nicotine against oral tissue. In animal studies, sweeteners at the levels present in nicotine pouches increased nicotine consumption, and higher sweetener content made mice more willing to tolerate higher-strength nicotine products. In other words, the sweeteners make it easier to use the product comfortably, especially at higher nicotine doses.
Trace Contaminants
Because Zyn’s nicotine originates from tobacco, trace amounts of tobacco-specific nitrosamines (TSNAs) can carry over into the final product. These are compounds associated with cancer risk in traditional tobacco products. A study published in Tobacco Control tested 26 nicotine pouches and found nitrosamines at extremely low levels, with the highest amounts measured in the single-digit nanogram range per pouch. For context, a nanogram is one billionth of a gram. Traditional smokeless tobacco products contain nitrosamine levels orders of magnitude higher.
FDA Authorization
In January 2025, the FDA authorized 20 Zyn products for legal marketing in the U.S. through its premarket tobacco product application process. The authorized products span 10 flavors (Chill, Cinnamon, Citrus, Coffee, Cool Mint, Menthol, Peppermint, Smooth, Spearmint, and Wintergreen), each in both the 3 mg and 6 mg strengths. The FDA was explicit that authorization does not mean “safe” or “FDA approved.” It means the agency determined that allowing these specific products on the market meets a public health standard. Zyn is not permitted to market itself as lower-risk than other tobacco products without a separate application, which it has not received.
The authorization also comes with a warning: the FDA can suspend or withdraw it if evidence emerges of notable youth uptake or other public health concerns.