Choose portion snus unless you specifically want to control the size of every pinch yourself. A loose prilla is roughly two to three times the mass of a large portion, which is why loose delivers far more nicotine in practice even though the two formats are pharmacologically identical at a matched dose. Portion is also cleaner, keeps longer and now accounts for around 86% of Swedish volume.
This is one of the few questions in snus with real evidence behind it rather than forum consensus, including a clinical study run by FDA’s own Center for Tobacco Products. It is also one where the most repeated claims — loose drips more, loose stains more — turn out to have nothing behind them that I could find.
What the two formats actually are
Both start as the same product. Swedish Match’s own description of its production process has the tobacco “broken up, dried and fed into a grinder”, then “water and salt are added while the mixture is stirred, after which the snus is heated” — a step it calls pasteurisation. Only at the end do the formats diverge: loose goes straight into cans, while for portion “the portions are measured and inserted into a cellulose fiber tube. They are then sealed and cut apart.”
The defining property of loose snus is that you make the portion. Swedish Match’s patent US10278416B2 describes the particle size as one “which enables the final product to be provided in so-called loose form, from which a pinch of snus may be made in individual sizes by the person using the product”. That sentence is the whole argument for loose: you set the dose, by hand, every time.
These are formal regulatory categories, not just user vocabulary. When FDA renewed the modified-risk orders for General Snus in November 2024, it recorded the product subcategories as “Loose Snus and Portioned Snus”.
The size difference is bigger than most people assume
Portion weights are published and standardised. FDA’s Technical Project Lead review of the Swedish snus applications gives a Portion Mass of 300 mg for General Dry Mint Portion Original Mini and 1000 mg for the Original Large, White Large and Wintergreen White Large.
For General Loose, the same document gives only a Package Quantity of 45 g. There is no portion mass field, because there is no portion until you make one. No regulator publishes a weight for a prilla.
Two estimates exist and both trace back to industry work. A 2014 report prepared by ENVIRON for Swedish Match and filed with FDA states “a mean portion weight of 2.65 g is assumed for loose snus”. A Norwegian Institute of Public Health study, which declares no particular funding, used 2.5 g drawn from a median serving size in a British American Tobacco–funded study. The independent number comes from FDA itself and is larger still: in a 2023 clinical study by its Center for Tobacco Products, loose users took 2.99 g per use against 1.52 g for portioned users.
So a self-made pinch runs somewhere around 2.5 to 3 g — about three times a 1 g large portion, and roughly ten times a 300 mg mini. That single fact drives almost everything else on this page.
Nicotine delivery: identical per milligram, very different in practice
Two studies answer two different questions, and reading only one of them is how people end up arguing past each other.
The BAT-funded Digard study matched the nicotine content of the two formats and found nothing: “there was no statistically significant difference (p < .05) in systemic exposures between pouched and loose snus when the nicotine contents of the products were equivalent (10.7 mg and 10.8 mg, respectively).” Peak plasma nicotine was 10.8 ng/ml for both, with the same time to peak. So there is no magic in the fleece. A milligram is a milligram.
The FDA study asked what happens when people use the formats the way they actually use them. It is worth quoting its framing, because it establishes that nobody had done this before: “no published study to date has clinically evaluated the associations between ST format, use behavior, and nicotine exposure.” The results:
| Measure | Loose | Portioned |
|---|---|---|
| Amount per use | 2.99 g | 1.52 g |
| Total amount used | 11.45 g | 5.4 g |
| Peak plasma nicotine (Cmax) | 33.4 ng/ml | 19.1 ng/ml |
| Exposure over an 8-hour session (AUC) | 15,827.9 min·ng/ml | 8,155.3 min·ng/ml |
Roughly double the product, roughly double the nicotine exposure. Two caveats I would not skip: this was US moist snuff rather than Swedish snus, and it compared habitual loose users against habitual portion users, so it measures how people behave with each format rather than an intrinsic property of the format. That is still the thing you actually want to know.
The gap is narrowing from the other direction. The Norwegian Institute of Public Health tracked Scandinavian products from 2005 to 2020 and found loose flat at about 18.6 to 18.8 mg of nicotine per serving throughout, while portion climbed from 8.7 to 12.3 mg. A prilla still delivers around 50% more per serving, but that used to be more than double.
Moisture, pH and why loose feels different
FDA’s category description for this family of products is “moist (50-60% moisture) to semi-moist (30-45% moisture) oral smokeless products”. Within that, the ENVIRON monograph prepared for Swedish Match reports “all loose snus samples had a moisture content between 44 and 52%”, while Swedish Match’s pouch patent gives ranges from 30–60% for non-post-moisturised products up to 40–60% for post-moisturised ones — dry and white portions sitting at the lower end.
pH matters more than moisture, because pH determines how much of the nicotine is in free-base form and therefore how readily it crosses the mucosa. The same ENVIRON monograph notes that two independent groups “observed a lower pH for General Loose compared to pouched General brands”, against a Swedish snus range that “generally ranged from 7.5 to 8.7”. Lower pH means a smaller free-base fraction — which is part of why loose does not hit proportionally harder despite the much larger pinch.
What about the tobacco-specific nitrosamines?
Per gram, loose measured slightly cleaner. The ENVIRON report filed with FDA gives General Loose at 0.44 µg/g NNN and 0.23 µg/g NNK on a dry-weight basis, against 0.56–0.79 µg/g NNN and 0.24–0.33 µg/g NNK for the pouched Generals. Both are well inside the Swedish legal ceiling, which LIVSFS 2024:2 sets at 2 mg/kg dry weight for NNN and NNK combined.
But per gram is the wrong unit if you use more grams. The same report records daily consumption of “pouched snus users (all): 12 and 24 g/day” against “loose snus users (all): 32 and 77 g/day” for the mean and 95th percentile. Roughly 2.7 times the material. On those numbers a loose user’s daily nitrosamine intake is materially higher despite the marginally lower concentration, and that conclusion comes out of Swedish Match’s own submission to FDA.
Both figures above come from work commissioned by Swedish Match, which you should weigh accordingly. FDA’s own 2024 review of the same application redacts every quantitative value as confidential business information.
Storage, and a claim that turns out to be backwards
Swedish Match’s own consumer guidance is unusually specific: “Snus is perishable and must be stored in a refrigerator for best shelf life. When stored correctly, the shelf life for moist loose snus is 14 weeks, for moist portion-packed snus 20 weeks and for the dry assortments 30 weeks.”
Loose keeps six weeks less than portion. That is the manufacturer’s number, not mine.
The surprise is what the same page says about drying out: “Since portion-packed snus is more sensitive to drying out than loose snus, it requires a tighter can. Therefore portion-packed snus is packed in a plastic can.” The cardboard can that loose ships in is not a compromise — portion is the format that needs the sealed plastic. That directly contradicts the widespread claim that loose dries out faster, and it sits in tension with the shorter shelf life in the quote above. Both sentences are from the same manufacturer FAQ and I am reporting them as I found them rather than picking the one that makes a tidier story.
Side by side
| Loose snus | Portion snus | |
|---|---|---|
| Portion size | You make it; ~2.5–3 g in practice | Fixed: 300 mg mini, 1000 mg large |
| Published portion weight | None from any regulator | Published in FDA filings |
| Nicotine per serving (Scandinavian, 2020) | ~18.8 mg | ~12.3 mg |
| Peak plasma nicotine in use (FDA study) | 33.4 ng/ml | 19.1 ng/ml |
| Moisture | 44–52% | 30–60% depending on type |
| pH | Lower than pouched General | Higher; more free-base nicotine per gram |
| Refrigerated shelf life | 14 weeks | 20 weeks (30 for dry) |
| Can material | Cardboard | Plastic, because it dries out more easily |
| Share of Swedish volume, 2021 | ~14% | ~86% |
| Learning curve | You have to learn to form a pinch | Open tin, use |
The market has already decided
CAN, Sweden’s national competence centre on alcohol and drugs, reported in 2022 that “portion snus’s share increased from 53 percent in 2003 to approximately 86 percent in 2021”, citing Swedish Match figures. Swedish Match’s own 2017 annual report had already noted migration to pouch products “which at the end of 2017 accounted for more than 80 percent of volumes in Scandinavia”. The counterpoint is the United States, where the same report records that “approximately 84 percent of moist snuff in the US is sold in the traditional loose format”. The formats have swapped dominance across the Atlantic.
What I could not verify, and you should discount
Three claims are repeated everywhere and I found no primary support for any of them — not in FDA’s reviews, the ENVIRON monograph, Swedish Match’s own material, or the peer-reviewed literature.
- That loose drips or produces more saliva. The FDA topography study measured amount and deposition time; its full text is paywalled and I could not confirm whether it measured expectoration at all.
- That loose stains teeth more. Nothing. The ENVIRON monograph reviews dental effects and contains no loose-versus-portion staining comparison.
- That one format is more discreet. No source either way.
I would not put much faith in any of these. They may all be true — a larger, unpouched mass of wet tobacco sitting against your gum has an obvious mechanism behind every one of them — but nobody appears to have measured it, and an obvious mechanism is not a finding.
Where you can legally buy either
Both formats are banned across the EU outside Sweden, and the ban is format-neutral. Article 17 of Directive 2014/40/EU requires Member States to “prohibit the placing on the market of tobacco for oral use”, and Article 2 defines that to cover products “in powder or in particulate form or in any combination of those forms, particularly those presented in sachet portions or porous sachets” — powder catches loose, sachets catch portion. Sweden’s derogation under its Act of Accession is why Swedish snus exists at all.
Inside Sweden, snus is regulated as food. The Swedish Food Agency’s guidance records that “snus, snusliknande produkter och tuggtobak” are equated with food under section 3 of the Food Act, and LIVSFS 2024:2 sets binding contaminant limits: NNN and NNK combined at 2 mg/kg dry weight, lead at 3 mg/kg, benzo(a)pyrene at 0.003 mg/kg.
You will also see GOTHIATEK cited. It is stricter — NNN+NNK capped at 0.95 mg/kg, under half the legal ceiling — but it is Swedish Match’s own quality standard, applying only to that company’s products and self-policed. Useful, but not a regulation.
So which should you choose?
Portion, for almost everyone. It is consistent, it keeps longer, it requires no technique, and the dose is knowable rather than estimated. If you are coming to this from Swedish snus generally or from nicotine pouches, portion is the format that behaves the way you already expect.
Loose earns its place in exactly one scenario: you want to set your own dose, either smaller than a mini or larger than a large, and you are willing to learn to form a consistent pinch to get it. That is a real benefit and no portion product offers it. Just go in knowing that in practice loose users take about twice the material and get about twice the nicotine exposure — so if you are choosing loose to “use less”, the evidence says the opposite tends to happen.
Frequently asked questions
Is loose snus stronger than portion snus?
Per milligram of nicotine, no — a matched-dose study found identical plasma levels. In practice yes, because a self-made pinch is two to three times the mass of a portion.
How much is a prilla?
No regulator publishes a figure. Industry estimates sit at 2.5–2.65 g and FDA’s clinical study measured 2.99 g per use.
Does loose snus go off faster?
Swedish Match gives 14 weeks refrigerated for moist loose against 20 weeks for moist portion. But the same company says portion is the format more prone to drying out, which is why it ships in plastic.
Is loose snus cleaner or dirtier than portion?
Per gram it measured slightly lower in NNN and NNK. Per day it is likely higher, because loose users consume roughly 2.7 times as much material.
Can I buy either in the EU?
Only in Sweden. The EU oral tobacco ban covers powder and sachet forms alike, so switching format is not a way around it.
Is loose snus dying out?
In Scandinavia, it has gone from about half the market in 2003 to roughly one seventh in 2021. In the US the opposite is true — loose moist snuff still dominates there.
Sources
- FDA, Technical Project Lead review, Swedish Match applications SE0010524–SE0010533 (portion masses and package quantities)
- FDA, Modified Risk Tobacco Product renewal applications, General Snus, Federal Register, 1 December 2023
- Nighbor et al., “Smokeless tobacco format and nicotine exposure”, Nicotine & Tobacco Research 25(4):624, 2023 — authors at FDA’s Center for Tobacco Products; US Government work
- Digard et al., Nicotine & Tobacco Research 15(1):255 — funded by British American Tobacco (Investments) Ltd
- Norwegian Institute of Public Health, Nicotine & Tobacco Research 24(7):1130 — no particular funding declared
- ENVIRON International Corporation, HPHC report and snus monograph, prepared for Swedish Match and filed with FDA
- Swedish Match North Europe AB, US10278416B2 and EP3330191A1
- Swedish Match, snus production, consumer FAQ and GOTHIATEK standard — company material
- LIVSFS 2024:2, Swedish Food Agency regulations on snus and chewing tobacco
- CAN, Rapport 216, Tobakskonsumtionen i Sverige 2003–2021 — tobacco component funded by the Swedish Ministry of Social Affairs
- Directive 2014/40/EU, Articles 2 and 17