Snus vs Zyn: what they're made of and what they do to your body
They look the same and go in the same spot under your lip. But snus is tobacco, and Zyn isn't. That one difference changes what else you're absorbing — though not the nicotine, which is the part that keeps you hooked.
Snus is moist ground tobacco leaf in a pouch. Zyn and other nicotine pouches have no tobacco leaf: they're nicotine salts on a white plant-fiber filler. Lab tests found fewer toxic compounds in pouches than in snus. But some pouches still contained cancer-linked nitrosamines, nicotine levels vary widely, and some pouches pushed blood nicotine higher and faster than snus. Both are addictive.
Side by side
| Snus | Zyn / nicotine pouches | |
|---|---|---|
| Main ingredient | Ground tobacco leaf | Nicotine salts on a white filler — no tobacco leaf |
| Where nicotine comes from | Naturally in the tobacco | Added as powder |
| Cancer-linked nitrosamines | Present (comes from tobacco) | Found at low levels in 26 products tested by Germany's BfR |
| How it enters you | Through the gum lining | Through the gum lining |
| Addictive | Yes | Yes |
What they're physically made of
Snus is tobacco leaf, ground and packed into small pouches that sit between your upper lip and gum. Germany's Federal Institute for Risk Assessment (BfR) notes it's sold mainly in Sweden and usually flavored.
Zyn and other nicotine pouches contain no tobacco leaf. The BfR describes them as a white powder of nicotine salts and fillers. The VA says the pouch itself is made of cellulose (plant fiber), with flavorings and sweeteners added.
What that means for toxic compounds
Most of the harmful chemicals in snus come from the tobacco leaf itself. In a lab study by British American Tobacco researchers, nicotine pouches had lower levels of 10 harmful compounds than Swedish snus, and similar or undetectable levels of 13 more. The authors placed pouches close to nicotine gum and lozenges.
Independent testing is less reassuring. The BfR tested pouches sold in Europe and found tobacco-specific nitrosamines — a group of chemicals linked to cancer — in 26 products, up to 13 ng of one (NNN) per pouch. The researchers called this "of serious concern."
Bottom line: "tobacco-free" doesn't mean free of risk. The VA warns that the label can be misread as harmless. There's no long-term health data on pouches yet. See Zyn side effects for what's known so far.
What it means for your bloodstream
Both products send nicotine through the lining of your mouth straight into your blood. How much depends on the product's strength and form.
The BfR found pouch nicotine ranged from 1.79 to 47.5 mg per pouch. About 86% of it was "free-base" nicotine, the form your body absorbs most easily. Many products didn't label their strength clearly.
In a study funded by Japan Tobacco, 30 snus users tried pouches of 6, 9 and 11.2 mg for 30 minutes. Peak blood nicotine reached about 11–17 ng/mL after 30–38 minutes. An 11.2 mg snus reached about 8 ng/mL after 45 minutes. In that study, pouches delivered nicotine faster and to a higher peak than a snus of the same strength.
Faster, higher nicotine spikes matter because the BfR warns against nicotine for people with high blood pressure or heart disease, and notes that pouches absorb quickly, which feeds addiction.
What this means if you're cutting back
Switching from snus to Zyn may cut some tobacco chemicals, but it won't lower your nicotine dependence. The number that matters for quitting is how much nicotine you take in each day. Start by lowering your strength or following a taper schedule.
About these sources
Two of the studies above were funded by tobacco companies (British American Tobacco and Japan Tobacco), which sell nicotine pouches. The BfR is an independent German government agency.
Common questions
What is the difference between snus and Zyn?
Snus is ground tobacco leaf in a pouch. Zyn and other nicotine pouches contain no tobacco leaf — a white powder of nicotine salts and plant-based fillers inside a fiber pouch. Both deliver nicotine through the gum.
Is Zyn safer than snus?
Lab tests found nicotine pouches have fewer toxic compounds than Swedish snus, but those studies were funded by tobacco companies. Germany's BfR still found cancer-linked nitrosamines in 26 pouch products. Long-term health data for pouches doesn't exist yet. Both are addictive.
Does Zyn or snus put more nicotine in your blood?
It depends on the product and strength. In one Japan Tobacco-funded study, 6–11.2 mg pouches produced peak blood nicotine of about 11–17 ng/mL after 30–38 minutes, versus about 8 ng/mL after 45 minutes for an 11.2 mg snus.
- German Federal Institute for Risk Assessment (BfR) — Health risk assessment of nicotine pouches (2021)
- Mallock et al., Tobacco Control (BfR) — Nicotine and nitrosamines in oral nicotine pouches
- Azzopardi et al. (British American Tobacco) — Chemical characterization of nicotine pouches vs snus
- Renard et al. (Japan Tobacco) — Nicotine uptake of pouches vs snus and gum
- US Dept. of Veterans Affairs — Nicotine Pouches fact sheet
This guide is general information, not medical advice. Talk to a doctor or a quitline (1-800-QUIT-NOW in the US) for personal support.