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1–3% Nicotine in Gels: Read Ingredients and NZ CAS Rules

Hands checking nicotine gel ingredients

Nicotine gel is built from a handful of chemical classes: nicotine itself (freebase or a salt), carriers like glycerol or propylene glycol, water, gelling agents such as xanthan or gellan gum, an acid or salt former, flavourings, sweeteners and sometimes preservatives. Patent disclosures indicate nicotine content commonly ranges within a low single-digit percentage by weight, often centered around typical values used in examples. Under New Zealand’s product notification rules, every one of those ingredients has to be disclosed with its CAS number and checked against pharmacopoeial standards.

TL;DR:

  • Most nicotine gels use low single-digit percentages of nicotine, typically between 1% and 3%, based on patent examples and regulatory filings.
  • The formulation’s taste, texture, and absorption are heavily influenced by carrier type, gelling agents, acid choice, and pH, with different combinations affecting delivery speed and user experience.
  • Ingredient transparency requires CAS numbers, detailed quantities, and compliance with pharmacopoeial standards; marketing claims like “natural” do not guarantee safety or quality.
  • Regulatory authorities in New Zealand mandate full ingredient disclosure, including CAS numbers, ingredient ratios, and accurate nicotine strength reporting before market approval.
  • A typical nicotine gel contains nicotine (freebase or salt), carriers such as glycerol or propylene glycol, water, gelling agents, acids or salt formers, flavourings, and sweeteners, with formulation variables affecting final performance.
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Table of Contents

1. What’s in the jar: a full ingredient breakdown

If you’re trying to read a nicotine gel label properly, you need to know what each class of ingredient is actually called on paper, not just what it’s nicknamed on packaging. Here’s the full inventory.

Nicotine shows up in one of two forms. Freebase nicotine is the unprotected molecule, more volatile and typically perceived as sharper. Nicotine salts pair the molecule with an acid, commonly benzoic acid, lactic acid or (in gel-specific patents) levulinic acid, to make a more stable, less harsh compound. The acid choice isn’t cosmetic. It changes how the nicotine behaves once it hits your mouth.

Carriers do the heavy lifting of dissolving and suspending everything else. The two workhorses are glycerol (also called vegetable glycerine) and propylene glycol. Glycerol is thicker, sweeter and more of a humectant, meaning it holds onto moisture and keeps the gel from drying out. Propylene glycol is thinner and carries flavour more efficiently, which is why many formulations blend the two rather than picking one.

Gelling agents are what turn a liquid into something you can actually hold under your tongue without it running everywhere. The common ones include:

  • Xanthan gum, valued for shear-thinning texture that feels smooth rather than slimy.
  • Low-acyl gellan gum, which sets into a firmer, more defined gel structure.
  • Agar, a seaweed-derived gellant that adds heat-stable firmness.
  • Alginate, which cross-links with calcium ions to form a stable matrix.
  • Guar gum, often used in small amounts to adjust viscosity without adding much flavour interference.

Water fills out the formula and controls overall concentration. Some patent examples run fairly water-light, leaning on glycerol as both solvent and bulking agent, while others use a higher water fraction to keep viscosity manageable.

Acids and salt formers aren’t just there to make a nicotine salt. Levulinic acid in particular appears repeatedly in gel patents because it does double duty: it helps form the salt and it contributes to a cleaner sensory profile compared with some other organic acids.

Divalent ions, chiefly calcium, work with alginate and some gellan systems to crosslink the polymer chains into a stable gel network. Without them, certain gelling agents simply won’t set properly.

Flavourings are typically natural flavour compounds rather than synthetic aromatic chemicals, though “natural” on a label is a marketing and regulatory term, not a safety guarantee in itself. Sweeteners mask the inherent bitterness of nicotine, which is considerable even at low doses. Common choices include natural sweeteners like steviol glycosides, though the Ministry of Health’s product-safety appendix excludes several sugars and sweeteners outright.

Preservatives are used sparingly in gel systems because many antimicrobial agents interact poorly with the polysaccharide gel network or sit on the prohibited list.

One term worth understanding properly: the CAS number. This is the unique registry number assigned to every distinct chemical substance by the Chemical Abstracts Service. Regulators ask for it because trade names and flavour descriptors are inconsistent and sometimes deliberately vague, while a CAS number pins down exactly which molecule is in the bottle. On a notification document, you’ll usually find it listed in a table alongside the ingredient name and the quantity per unit volume.

Ingredient identities mapped to CAS records

2. Why each ingredient is there: delivery, texture and taste

Every ingredient in a nicotine gel earns its place by doing a specific job. Strip any one of them out and something breaks, whether that’s stability, mouthfeel or how quickly nicotine actually reaches your bloodstream.

  1. Carrier choice sets viscosity and taste first. Glycerol brings sweetness and a thicker mouthfeel, while propylene glycol thins things out and lets flavour compounds travel more cleanly across your tongue. Most formulations blend both to balance texture against taste.
  2. Gelling agents control release profile, not just shape. A firmer gellan-heavy gel releases more slowly than a softer xanthan-dominant one, which is why manufacturers rarely rely on a single gellant. Blending xanthan with agar or gellan lets formulators tune both the structural set and how quickly the gel breaks down under the tongue.
  3. Acid and salt formation change how nicotine is absorbed. WHO guidance on tobacco product regulation notes that pH and formulation choices are deliberate design decisions that alter nicotine’s bioavailability, meaning how much of the dose actually becomes available to the body. Forming a nicotine salt with an acid like levulinic acid shifts the molecule’s ionisation state, which affects how readily it crosses the oral mucosa compared with freebase nicotine at a different pH.
  4. Divalent ions hold the gel together. Calcium ions crosslink alginate and certain gellan chains into a continuous network. Too little calcium and the gel stays runny; too much and it can turn brittle or grainy.
  5. Flavour and sweetener choices exist because nicotine tastes bitter on its own. Masking that bitterness is largely a sensory engineering problem, solved with natural flavour compounds and sweeteners layered over the base gel.
  6. Preservative trade-offs are real. Adding a preservative can extend shelf life, but many common preservative classes are restricted or banned outright in oral nicotine products, so formulators often lean instead on controlling water activity and pH to limit microbial growth.

Pro Tip: If a notification document lists a pH value, cross-reference it against the acid used. A low pH paired with a weak acid is a red flag that the salt formation described on paper doesn’t match the chemistry.

The practical upshot is that two gels with an identical nicotine percentage can deliver noticeably different experiences depending entirely on carrier ratio, gellant blend and acid selection. None of that shows up unless you read past the headline nicotine strength.

3. Real formulation ranges from patent examples

Patent filings are the closest thing to a transparent formulation blueprint that exists in this category, since they’re required to disclose working examples rather than just marketing percentages. They’re not proof of what any specific commercial product contains, but they show the ranges manufacturers actually work within.

Patent examples indicate nicotine content generally falls within a low single-digit percentage by weight. Glycerol frequently serves as the dominant carrier, comprising the majority of the formulation alongside water and other active ingredients. Gelling agents are typically present in smaller amounts, usually a few percent by weight, with manufacturers often blending multiple gellants for formulation performance.

Component class Example weight range Functional note
Nicotine (freebase or salt) 1% to 3% Low single-digit percentage by weight
Glycerol (carrier) Majority of the formulation Dominant carrier in many disclosed formulations
Gelling agents (combined) A few percent by weight Frequently a multi-gellant blend
Levulinic acid / salt former Variable, formulation-specific Used for pH adjustment and salt formation

These figures come from formulation examples in gel-specific patent disclosures and aren’t a substitute for a specific product’s own notification document. A patent example is a researcher’s working formula, not a commercial release, and actual products on shelf can sit well outside these ranges depending on their own R&D path. If you want the numbers for a specific gel you’re looking at, the notification filing for that exact product is the only reliable source.

4. What regulators actually demand before a gel reaches shelves

In New Zealand, a nicotine gel can’t legally reach a retail shelf without clearing a product notification process that forces a level of ingredient transparency most consumer goods never face. The Ministry of Health’s guide to product notifications spells out exactly what has to be on file.

  • Full ingredient list with CAS numbers. Every component, from nicotine itself down to trace flavour compounds, needs a CAS number attached.
  • Quantities per unit volume. Ingredient amounts are reported per millilitre (or equivalent unit), not just as vague percentages.
  • Carrier ratios. Where propylene glycol and glycerol are both present, the ratio between them has to be stated, alongside carrier proportions more broadly.
  • Nicotine strength reporting. The declared nicotine concentration has to match what testing confirms, not just what the formula was designed to hit.
  • Labelling requirements. Batch number, expiry date and manufacturer’s name are mandatory on the finished packaging, not optional extras.

Quality standard, stated plainly: nicotine and the primary carriers used in a notified product must meet USP or Ph Eur monograph standards, the pharmacopoeial benchmarks that define acceptable purity and identity for pharmaceutical-grade substances. That’s a meaningfully higher bar than general food-grade sourcing.

The same product-safety appendix sets out a list of substances that simply aren’t allowed, or are only tolerated as unavoidable trace contaminants. That list covers compounds classified as carcinogenic, mutagenic or reprotoxic (CMRs), certain preservative classes, ethylene glycol, mineral oils, and a defined set of sugars and sweeteners excluded from use. WHO guidance adds a useful framing point here: regulators increasingly prefer the term “ingredients” over “additives”, because it removes the implication that some components are incidental rather than deliberately formulated in.

Strength limits for freebase nicotine versus nicotine salts aren’t handled identically, since the two forms behave differently in terms of perceived harshness and reported bioavailability. Anyone checking a specific product’s compliance against current limits should go to the primary notification documentation rather than relying on secondary summaries, since thresholds get revised.

5. The manufacturing choices that shape the final formula

A few production variables decide what actually ends up in the finished gel, independent of what the base recipe says on paper.

  • pH and acid selection determine the salt form. Choosing levulinic acid over benzoic acid, or adjusting the acid-to-nicotine ratio, shifts the resulting salt’s properties and, per WHO guidance on formulation and bioavailability, how readily nicotine crosses the oral mucosa.
  • Mixing and hydration sequence affects texture and distribution. Gelling agents need proper hydration before the nicotine and flavour compounds go in, or you end up with uneven nicotine distribution across the gel, meaning some doses are stronger than others from the same batch.
  • Preservation strategy has to work within the banned-substance list. Since many conventional preservatives are restricted, manufacturers often rely on controlling water activity and pH rather than adding a dedicated antimicrobial agent.
  • Batch documentation and CAS-level reporting underpin every notification. Quality control sampling has to trace back to specific batches, with ingredient-level CAS reporting kept on file for regulatory review, not just summarised at the recipe level.

Get any one of these wrong and the problem often isn’t visible on a lab test of the final nicotine percentage. It shows up as inconsistent texture, uneven dosing between gel applications, or a formulation that technically matches its notification on paper but behaves differently in practice.

6. What we actually know about Lesser Evil’s own formulation

We built our oral gel around the same formulation principles covered above: nicotine, a carrier system, a gelling matrix, and natural flavours and sweeteners rather than synthetic ones. Here’s what’s verifiable about the product itself.

  • The Lesser Evil Oral Mister is a sublingual gel product, used under the tongue via the oral mucosa, not applied to skin and not inhaled.
  • It’s available in three flavours.
  • It is battery-free, so there’s no vape coil, no charging cable and no e-waste at the end of its life.
  • It’s sold directly through our online store.

We go into more technical depth on how gel-based delivery compares with other formats in our guide to gel and nicotine delivery, and we’ve written separately about how to read a nicotine ingredients label if you want help parsing CAS numbers and carrier ratios on any product, not just ours.

For the exact ingredient list, CAS numbers and quantities in our own formulation, the product notification documentation and packaging label are the definitive source, not marketing copy, ours included.

Why ingredient transparency matters more than the flavour name

Here’s our honest take: most people shopping for a nicotine gel read the flavour name and the nicotine strength, then stop. That’s backwards. The flavour tells you almost nothing about formulation quality. The CAS numbers and pharmacopoeial compliance tell you whether the nicotine and carriers inside actually meet a verifiable purity standard, which is the thing that genuinely varies between products.

“Natural” on a label is a real formulation choice, not a safety claim. A natural flavour compound still needs the same scrutiny as a synthetic one, because natural doesn’t mean untested or automatically gentler. If a brand can’t point you to its notification filing or produce a certificate of analysis on request, that’s worth noticing.

Our advice for anyone doing real research here: check the notification, not the packaging copy. Ask for a certificate of analysis if you’re buying in volume or doing formal comparison work. Treat patent ranges as useful context, never as a guarantee of what’s in the specific jar in front of you.

— Luke McLeod

Where to find the full ingredient list for our own gel

We’re not going to tell you our formula is better than anyone else’s. What we can tell you factually is what it is: a sublingual nicotine gel, tobacco-free, battery-free, flavoured with natural flavours and sweetened with natural sweeteners rather than synthetic alternatives.

Lesser Evil Oral Mister

  • Format: sublingual oral gel, used under the tongue, not vaped or smoked.
  • Flavours are available.
  • The design is battery-free, so there’s no charging and no e-waste.
  • Sold as a one-off purchase online, no subscription required.

If you’re comparing nicotine gel against other formats like pouches or vapes, this category comparison covers the broader landscape factually. For our own product’s full ingredient breakdown and notification details, start with the Lesser Evil Oral Mister product page, or browse the full range at the Lesser Evil Nicotine Mouth Spray store, where the Mouth Spray is listed at $18 one-off.

This article is general information, not a substitute for advice from a qualified doctor. Consult a qualified healthcare professional about your own circumstances before acting on anything here.

FAQ

What is the healthiest form of nicotine to use?

There’s no form of nicotine that qualifies as healthy, since nicotine itself carries risks regardless of delivery method. What differs between formats is exposure to other substances: a sublingual gel means you don’t breathe in combustion or vaporised chemicals, which is a factual difference in exposure route rather than a health claim about the gel itself.

Are there bad chemicals in nicotine pouches?

Nicotine pouches can contain substances restricted or banned in some markets, which is exactly why product-notification systems exist to check ingredient lists against disallowed substance lists. The specific risk depends entirely on the individual product’s formulation, so checking its notification or label is the only way to know for a given pouch.

What are the negative health effects of nicotine?

Nicotine is a stimulant that affects heart rate and blood pressure and carries dependency risk regardless of how it’s delivered. Specific health effects vary by dose, frequency and individual factors, and anyone with health concerns about nicotine use should speak with a qualified medical professional rather than relying on product marketing.

What are the ingredients of nicotine gel?

A typical nicotine gel contains nicotine (freebase or a salt), a carrier such as glycerol or propylene glycol, water, a gelling agent like xanthan or gellan gum, an acid or salt former, flavourings and sweeteners. New Zealand’s product-notification rules require every one of these to be disclosed with a CAS number and checked against USP or Ph Eur standards.

Sources

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