Quit Smoking, Vaping, Alcohol

How to Quit Smoking: What the Evidence Actually Says

· the team behind the app

Almost everyone quits smoking the same way: they pick a day, they throw out the pack, and they grit their teeth. It’s the most popular method by a wide margin — and it’s the one with the worst results.

The UK’s public health guidance puts it bluntly. Around half of all smokers in England try to quit unaided, using willpower alone, “despite this being the least effective method.” Roughly 3 to 4 in 100 unassisted quitters are still non-smokers a year later. Quit with a trained stop-smoking advisor and a stop-smoking aid, and that figure rises to around 16 in 100 — about three times as likely to succeed.

That gap isn’t a story about weak people. It’s a story about people using a hard method when easier ones exist, are well studied, and mostly cost very little. Here’s what the research actually supports.

One honest caveat before we start: the numbers below come from different studies, in different countries, with different populations. They’re not a leaderboard you can do arithmetic on. Treat them as a rough map of what’s worth asking your doctor or pharmacist about.

The three most effective treatments

A 2024 summary of the Cochrane smoking-cessation reviews — the largest and most careful evidence synthesis in this field — found that three treatments came out ahead of the rest, with similar magnitudes of effect: varenicline, cytisine, and nicotine e-cigarettes.

All the main quit-smoking medicines work to some degree. Varenicline, cytisine, bupropion, and nicotine replacement therapy (NRT) all beat placebo. But those first three are the front runners.

Availability is the catch. Varenicline is prescription-only nearly everywhere. Cytisine is over-the-counter in some countries, prescription in others, and unavailable in many. Nicotine e-cigarettes are sold openly in some countries and outright banned in others. What’s realistically on the table for you depends entirely on where you live — so the right move is a conversation with a local pharmacist or doctor, not an internet shopping list.

Varenicline

Varenicline is a prescription tablet that works on the same brain receptors nicotine binds to, blunting both craving and the reward from smoking. It has been among the most effective single treatments in the evidence base for well over a decade.

It’s a prescription medicine with real side effects and real contraindications, so dosing and suitability are a doctor’s job, not an article’s. If you’ve tried to quit before and cravings were the wall you hit, it’s the first thing worth asking about.

Cytisine

Cytisine is the option most of the English-speaking internet has never heard of, and it deserves better. It’s a plant-derived compound that works similarly to varenicline, and it has been used for smoking cessation in Central and Eastern Europe for decades — sold cheaply under brand names such as Tabex.

A 2024 review found cytisine significantly more likely to lead to quitting than placebo, usual care, or NRT, with comparable effect, safety, and cost to other recommended products. In head-to-head comparisons with varenicline, the difference was not statistically significant (RR 0.96, 95% CI 0.63 to 1.45) — meaning the evidence doesn’t show one clearly beating the other.

If you’re in Central or Eastern Europe, this is a well-established and inexpensive option, and worth asking your pharmacist about by name. Elsewhere it may not be licensed yet, or may only recently have become available — so check locally rather than assuming either way.

Nicotine e-cigarettes

This is the finding people argue about, so here it is plainly. Cochrane’s review of electronic cigarettes for smoking cessation rates it as high-certainty evidence that nicotine e-cigarettes increase quit rates at six months or more compared with nicotine replacement therapy.

In absolute terms — which is the honest way to read it:

As a risk ratio, that’s RR 1.59 (95% CI 1.29 to 1.93), from 7 studies and 2,544 participants. The relative number sounds dramatic; the absolute number is more modest and more useful. Both are true.

Nicotine e-cigarettes also beat non-nicotine e-cigarettes (moderate certainty) and beat behavioural support alone or no support (low certainty). The most commonly reported side effects — throat or mouth irritation, headache, cough, nausea — were similar to those reported with NRT.

Two important limits. First, this evidence is about using e-cigarettes to stop smoking cigarettes. It is not evidence that taking up vaping is a good idea if you don’t smoke, and nicotine remains addictive — plenty of people who switch then need a plan to come off vaping too. Second, legality and availability vary enormously by country. The sale of nicotine e-cigarettes is restricted or prohibited in a number of countries, including Thailand and Vietnam. Where they aren’t legally available, this evidence is academic, and the other options above carry the load.

The most-ignored tip: use two forms of NRT, not one

If nothing else in this article sticks, let it be this one.

The Cochrane evidence is clear that NRT works best when a patch is combined with a fast-acting form — gum, lozenge, inhalator, or mouth spray. Not one or the other. Both.

The logic is simple once you see it. The patch delivers a slow, steady background level that takes the edge off all day. It does nothing for the sudden spike that hits when you step outside after a meal or finish a stressful call. The fast-acting form covers exactly that spike. Using a patch alone leaves the peaks uncovered, which is where most relapses happen.

Most people buy one product, use it inconsistently, decide “NRT doesn’t work for me,” and go back to willpower. Combination NRT is cheap, available over the counter in most countries, and routinely under-used. A pharmacist can set you up in five minutes.

Behavioural support adds to medication — it doesn’t compete with it

There’s a false choice buried in a lot of quit advice: pills or talking to someone. The evidence says: both, and they stack.

A Cochrane review of 83 studies found high-certainty evidence that adding behavioural support — in person or by telephone — for people already using quit-smoking medication increases quit rates. The pooled estimate was RR 1.15 (95% CI 1.08 to 1.22) across 65 trials and 23,331 participants: increasing behavioural support raises the chance of success by roughly 10% to 20%.

That’s a smaller effect than the medications, and it’s on top of them, not instead of them. It’s also usually free. Many countries run publicly funded stop-smoking services, and telephone quitlines exist in most. The combination of a trained advisor plus a stop-smoking aid is what produces that 16-in-100 figure from the opening.

Why counting days is worth doing

None of the above changes the fact that quitting is an experience you have to live through hour by hour, and that the hardest part is the gap between the effort you’re putting in and results you can’t see yet.

Counting days is a small, unglamorous fix for that gap. It converts something invisible into a number you own. Day 3 — past the worst of withdrawal. Day 30 — the daily pattern broken. Each one is concrete evidence against the voice saying you can’t do this, and each one raises the price of a slip in a way that abstract health benefits don’t.

It also gives cravings something to lose to. A craving asks you for the next ten minutes. A visible streak reminds you what those ten minutes would cost. If you want to see what your body is doing while the number climbs, our quit smoking timeline walks through it from 20 minutes to 15 years, and the 30 days milestone page covers what that first month actually feels like.

Count your days, not your slip-ups. The Quit Smoking, Vaping, Alcohol app is a free, private day counter for quitting smoking, vaping, drinking, or any habit — milestones, money saved, and health progress, one day at a time. Download on the App Store · Get it on Google Play

Counting is a support, not a treatment. Do it alongside the things above, not instead of them.

What to do this week

  1. Book a short conversation with your doctor or a pharmacist and ask what quit-smoking medication is available and appropriate for you where you live.
  2. If you’re going the NRT route, get two products — a patch plus a fast-acting form. Ask the pharmacist to walk you through using them together.
  3. Find the free support. A national quitline or local stop-smoking service adds real, measurable odds on top of whatever medicine you use.
  4. Pick a quit date in the next two weeks and start counting from it. Work out what smoking costs you a year with the sobriety calculator — the number is usually larger than people expect.
  5. Plan for a slip. Most successful quitters slipped along the way. One cigarette is data, not a verdict.

Frequently asked questions

What is the single most effective way to quit smoking?

On current evidence, a quit-smoking medication (varenicline or cytisine) or nicotine e-cigarettes, combined with behavioural support from a trained advisor. The three medications and e-cigarettes come out similar to each other in effect size; the support is what stacks on top. Willpower alone is the least effective approach.

Does nicotine replacement therapy actually work?

Yes — and it works considerably better as a combination. A patch plus a fast-acting form like gum, lozenge, or spray outperforms a patch alone. If you’ve tried a single NRT product and it didn’t help, that’s worth retrying properly before concluding NRT isn’t for you.

Can I get these treatments where I live?

It depends. Varenicline is prescription-only in most countries. Cytisine is inexpensive and long-established in much of Central and Eastern Europe but not licensed everywhere. Nicotine e-cigarettes are legal in some countries and banned in others. A local pharmacist will know in one conversation what’s realistic for you.

Sources and further reading

This article is for information only and isn’t medical advice. Availability of the treatments described varies by country and several are prescription-only. Talk to a doctor or pharmacist about what’s right for you.