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Nicotine patch: nicotine content
A patch is the one product on this page whose number is a delivery rate rather than a content. A 21 mg patch is not 21 mg of nicotine going into you at once; it is 21 mg spread across a day.
This is a reference page about what is printed on packs and what EU law caps. It is not medical advice, not a diagnosis and not a recommendation to use any product here. Nicotine is addictive and every product on this page can sustain that dependence. If you use nicotine and want to stop, a pharmacist, a doctor or your national cessation service will help you more than a table will.
What the number on the pack is
| Item | Figure |
|---|---|
| Category | Licensed replacement medicines |
| The declared figure | mg of nicotine delivered over the wear time, not mg contained |
| Legal position | A licensed medicine: one patch at a time, per the label |
| 24-hour family | 21, 14 and 7 mg |
| 16-hour family | 25, 15 and 10 mg |
| Label figure means | nicotine delivered over the wear time |
| Time to plateau | several hours |
| Good at | holding a baseline, not answering a sudden craving |
The number is a rate, and that changes every comparison
Every other format on this surface is labelled by what it contains: milligrams in a pouch, milligrams per millilitre of liquid, milligrams in a piece of gum. A patch is labelled by what it delivers across its wear time. The reservoir in the patch holds more than the label figure, because a diffusion gradient is needed to keep delivery steady to the end.
So a 21 mg patch and a 21 mg pouch are not comparable objects, and the patch is not the larger dose it appears to be. The right comparison for a 21 mg over 24 hours patch is a smoker absorbing roughly 1 to 1.5 mg per cigarette across a day, which puts it in the region of a twenty-a-day habit.
Two families: sixteen hours and twenty-four hours
Sixteen-hour patches, commonly 25 mg, 15 mg and 10 mg, are applied on waking and removed at bedtime. Twenty-four hour patches, commonly 21 mg, 14 mg and 7 mg, are worn overnight as well.
The trade-off is the same in both directions. Overnight wear keeps nicotine in the blood so the first craving of the morning is blunted before waking, which suits people whose hardest moment is the first hour of the day. It also causes vivid dreams and disturbed sleep in a proportion of users, which is exactly what the sixteen-hour design avoids by giving a nicotine-free night. Neither is better in general and both are widely used.
Deliberately slow, which is a feature
Nicotine crosses the skin steadily, and plasma levels rise over several hours to a plateau rather than spiking. There is no arterial surge, no rapid onset, and correspondingly little of the reinforcement that makes a cigarette compelling. That is the design intent: the patch is not there to answer a craving in the moment, it is there to remove the background withdrawal that generates cravings all day.
It is also why a patch alone frequently disappoints someone expecting relief from an acute urge, and why the combination of a patch with a fast-acting form has more support in the evidence than either alone.
Stepping down the ladder
The three strengths in each family exist as a taper. The label gives the schedule, typically a period of weeks on the highest appropriate strength followed by steps down. Where a person starts depends on how much they smoked, and the pack states the rule.
The step down is the part people abandon, usually because the interval is being counted rather than the withdrawal being watched. A pharmacist can adjust the plan, and this is genuinely worth asking about rather than guessing at.
Skin, and the practical details
Apply to clean, dry, hairless skin and use a different site each day so that the same patch of skin is not covered repeatedly. Mild local redness and itching are common and usually settle. A patch that will not stay on through exercise or a shower is a known nuisance; the leaflet covers what to do. As with any licensed medicine, the patient information leaflet in the box is the authority, not a web page.
Against a cigarette
The only figure that lets any of these formats be compared is what a smoker actually absorbs: roughly 1 to 1.5 mg of nicotine per cigarette, or something in the region of 20 to 30 mg across a twenty-a-day habit. That is a measured absorbed dose, and it is not the same kind of number as the one on most packs.
A licensed replacement product is designed to sit against that absorbed figure rather than above it, which is the entire point of the dose ladder printed on the pack: enough to remove withdrawal, in a form slow enough not to reproduce the reinforcement.
| Reference point | Figure |
|---|---|
| Nicotine absorbed from one cigarette | about 1 to 1.5 mg |
| Nicotine absorbed at twenty cigarettes a day | about 20 to 30 mg |
| EU cigarette machine yield ceiling | 1 mg per cigarette |
| Nicotine in a full EU-legal single-use vape | up to 40 mg, as a content |
| Nicotine in a full 10 ml refill bottle at 20 mg/ml | 200 mg, as a content |
| Nicotine patch | 21, 14 and 7 mg over 24 hours; 25, 15 and 10 mg over 16 hours |
Quitting from here
The patch is the backbone of combination therapy: a steady baseline plus a fast-acting form for breakthrough cravings. Cochrane reviews find this combination outperforms a single form, and both outperform going without.
The pattern with the most evidence behind it is the same whichever product you are stopping. A long-acting form holds the baseline so that withdrawal is not generating cravings all day, and a fast-acting form is there for the moments a craving still arrives. Cochrane reviews of nicotine replacement therapy find that using it improves the chance of stopping compared with no medication, and that combining a patch with a fast-acting form does better than either on its own. Behavioural support on top of medication does better again.
Two things are worth knowing before you start. Under-dosing is the usual failure: people choose the low strength, use it less often than the label says, and conclude that replacement does not work for them. And prescription medicines exist for tobacco dependence as well; those are a conversation with a clinician rather than a shelf decision.
National services are free and staffed by people who do this all day. In Estonia the National Institute for Health Development runs cessation counselling and publishes the current clinic and helpline list. In Finland the Stumppi service run by Filha covers the same ground. In Sweden it is Sluta-Roka-Linjen. Your pharmacy will know the local one.
Source: Cochrane Tobacco Addiction Group reviews of nicotine replacement therapy and of combination therapy · checked 2026-09-06
Frequently asked questions
Is a 21 mg patch 21 mg of nicotine?
It delivers 21 mg over twenty-four hours. The patch itself contains more, because a gradient is needed to keep delivery steady. It is a rate, not a content.
Should I wear a nicotine patch at night?
Twenty-four hour patches are designed for it and blunt the first craving of the morning. Sixteen-hour patches are removed at bedtime and avoid the sleep disturbance and vivid dreams some people get. Both are standard.
Why does the patch not stop my cravings?
It is not designed to. A patch holds a steady baseline and has no peak, so an acute craving needs a fast-acting form alongside it. That combination is the one with the strongest evidence.
Sources: Product label and Summary of Product Characteristics published by the national medicines agency · Cochrane Tobacco Addiction Group reviews of nicotine replacement therapy · Benowitz, Hukkanen and Jacob, Nicotine chemistry, metabolism, kinetics and biomarkers, Handbook of Experimental Pharmacology, 2009 · checked 2026-09-06
Other formats
Nicotine gum
2 mg and 4 mg per piece
Nicotine lozenge
Commonly 1.5 mg, 2 mg and 4 mg, with 1 mg in some markets
Nicotine mouth spray
1 mg per spray
Nicotine inhalator
15 mg cartridges, with a 10 mg version in some markets
Nicotine nasal spray
0.5 mg per spray; one dose is one spray in each nostril, so 1 mg
Cigarette (factory-made)
Up to 1 mg machine yield; roughly 1 to 1.5 mg actually absorbed
All formats, the conversion tables and the EU caps are on the hub page.
What changes when you stop
Sleep, resting heart rate, mood and appetite all move in the first weeks. TempoLife logs them in one place so the change is something you can see rather than something you have to remember.