Written for Stock My Medicine and clinically reviewed by Hajra Dhanchora, MPharm (GPhC 2216990).
Nicotine patches are the quiet workhorse of quitting: stick one on in the morning and it hands your body a steady, smoke-free dose of nicotine all day, so the background craving that makes the first week so miserable simply doesn't build. With Stoptober starting on 1 October, here's how patches actually work, where to put them, and the mistakes that make people think they don't.
How do nicotine patches work?
A patch releases nicotine slowly through the skin into the bloodstream. Unlike a cigarette, which spikes nicotine in seconds, a patch takes a couple of hours to build to a steady level and then holds it there. That's the point: it flattens out the peaks and troughs that drive craving, without any of the tar, carbon monoxide or 5,000 other chemicals in smoke. Nicotine is the addictive part of smoking, but it isn't the part that causes cancer, heart disease or lung damage.
Do nicotine patches work?
Yes, and the evidence is unusually solid. Used properly, patches roughly double your chance of quitting compared with willpower alone, and combining a patch with a fast-acting product such as gum, a lozenge or a mouth spray doubles the odds again. That combination, patch for the background plus a rescue product for sudden cravings, is exactly how NHS stop-smoking services prescribe. Our earlier guide to choosing your NRT covers the pairing in detail.
Where to put a nicotine patch
Anywhere the skin is clean, dry, hairless and unbroken: the upper arm, chest, upper back, shoulder or hip are the usual spots. Press it on firmly for ten seconds, including the edges. Move to a different site each day and don't return to the same patch of skin for at least a week, which keeps irritation to a minimum. Avoid skin that's oily, creased, freshly moisturised or sunburnt; the patch won't stick, and it won't dose properly if it's half off.
16-hour or 24-hour patches?
Both do the same job over different hours. Nicorette Invisi patches are 16-hour: on when you wake, off at bedtime, so nicotine-free sleep and fewer vivid dreams. NiQuitin Clear patches are 24-hour: worn through the night, which suits anyone whose first cigarette used to come within minutes of waking. If you smoked more than ten a day, start on the highest strength (25mg Nicorette or 21mg NiQuitin) and step down over 8 to 12 weeks. Under ten a day, or a first cigarette an hour or more after waking, start a step lower.
How long do nicotine patches take to work?
Nicotine from a patch reaches useful levels in two to four hours, which is why the first morning can feel rough if you rely on the patch alone. Two fixes: put the patch on as soon as you wake rather than after breakfast, and keep a fast-acting product to hand for the first few days while your body adjusts. From day two onwards, yesterday's patch has already done the groundwork.
Can you cut nicotine patches in half?
Don't. Most patches store nicotine in a matrix across the whole patch, and cutting one changes how quickly it releases and can waste the dose. If you want a lower dose, use the next step down in the range; every brand makes one. The same goes for wearing two at once to top up: use a rescue product instead.
Nicotine patch side effects: are they bad for you?
The common ones are mild: redness or itching under the patch (rotating sites fixes most of it), vivid dreams or broken sleep with 24-hour patches (switch to 16-hour, or take it off before bed), and occasional headache or nausea in the first days, which usually means the dose is a step too high. Nicotine patches are not bad for you in the way smoking is; they're licensed for use in people with stable heart disease and, with a pharmacist's or midwife's advice, in pregnancy, because the alternative is smoke. Ask our pharmacist first if you've had a recent heart attack or stroke, have very uncontrolled blood pressure, or take medicines whose doses change when you stop smoking, such as clozapine, theophylline and some blood thinners.
Getting ready for Stoptober
Pick your quit date, buy your patches and a rescue product before it, and start the patch on the morning of day one, not after the last cigarette. Plan the step-down from the start: highest strength for six weeks, then two weeks on each lower step. The full patch range and the rest of our stop smoking products are all here.
Frequently asked questions
Can I smoke while wearing a patch?
Ideally not, but a slip doesn't mean stopping the patch. Having a cigarette on top of a patch makes some people feel sick, which is the body's own reminder. Cutting down with NRT before a full stop is a recognised route as long as a quit date follows.
Can I shower or swim with a patch on?
Yes. A well-applied patch survives showers, baths and swimming. If one comes off, replace it with a new one rather than trying to re-stick it.
How long should I use patches for?
Eight to twelve weeks in total, stepping down as you go. Stopping the patches too early is one of the commonest reasons quits fail; finishing the course costs a few pounds and protects weeks of effort.