I smoked after quitting. What can I do to avoid going back to regular smoking?

Smoking one cigarette after a few days or months without smoking does not have to mean a relapse. A relapse is when smoking becomes regular again. Smoking a cigarette again is, however, a warning sign. A US study included 235 adults who were quitting smoking on their own. For those who smoked even once after quitting, the authors estimated the probability of going back to their previous smoking at 95% (1). The participants quit without treatment, so the result of this study does not settle whether someone who has just put out a cigarette will manage to quit. In the following hours, it helps to throw away the rest of the pack and work out what triggered the urge to smoke. People taking a medicine should also discuss further treatment with a doctor or pharmacist.

In brief

• Smoking one or a few cigarettes again is not the same as a relapse, meaning a return to regular smoking. In one proposal for assessing study results, treatment failure is defined as 7 consecutive days of smoking or smoking in each of two consecutive weeks.
• After smoking a cigarette again, you should not increase the dose of your medicine. Any decision to stop treatment needs to be discussed with a doctor or pharmacist. In a study of nicotine patches, people who kept using a nicotine patch after smoking a cigarette stopped smoking again more often than those using a patch without nicotine (roughly one in ten people versus 1-3 in 100).
• During treatment with cytisine (Desmoxan, Recigar), you have to stop smoking by day 5 of the course at the latest and not smoke during it. If treatment does not bring the expected results, it should be stopped; the course can be repeated after 2-3 months. After smoking a cigarette again, further treatment should be discussed with a doctor or pharmacist.
• Smoking again in the second week after quitting, smoking several days in a row, and strong nicotine cravings despite taking medication are reasons to discuss a change of treatment with a doctor.

What is the difference between a lapse and a relapse?

If, after quitting, someone smokes one or a few cigarettes and then stops smoking again, this is not a relapse. A relapse is a return to regular smoking, daily or almost daily.

Studies assess abstinence in different ways. The Russell Standard allows up to 5 cigarettes in total over the follow-up period. Counting starts from the quit day or from the end of a previously agreed period in which cigarettes are not yet counted (2). A working group of the Society for Research on Nicotine and Tobacco (SRNT) proposed that treatment failure should be defined as 7 consecutive days of smoking or smoking on at least one day in each of two consecutive weeks. It also proposed that cigarettes smoked during the first two weeks after the quit day should not be counted in the result (3).

These are different criteria, and they do not set a single common boundary between a lapse and a relapse. They do not mean that 5 cigarettes do not matter or that smoking is allowed in the first two weeks.

Does one cigarette ruin your attempt to quit smoking?

One cigarette does not ruin your attempt to quit, but it signals a clearly higher risk of going back to smoking. What matters most is whether you smoke another cigarette.

In two nicotine patch studies, the best predictor of treatment outcome at six months was whether a participant smoked in the second week after quitting. Among people using a nicotine patch who smoked even once in that week, 83% in one study and 97% in the other were smoking at 6 months. Of those who did not smoke at all in the second week, 46% and 41% were not smoking at six months (4). A review of studies of people quitting without treatment showed that most relapses occur in the first 8 days (5).

Saul Shiffman's team asked 133 people who were quitting smoking to record on a handheld computer what had happened and how they reacted after smoking their first cigarette since quitting. They were to do this within a few minutes of smoking it. In this study, neither the number of cigarettes smoked on that occasion nor how pleasant the cigarette was predicted further smoking. In a later study by the same team, however, a slightly higher risk of further smoking applied to people who smoked more on that first occasion or who found the cigarette more pleasurable (6). People who felt like giving up after smoking their first cigarette since quitting reached for the next one sooner. Those who, immediately afterwards, tried to cope with the urge to smoke and stop smoking again were less likely to smoke again the same day (7).

What should you do within 24 hours of smoking a cigarette?

On the first day after a lapse, the most important thing is not to reach for another cigarette. Put cigarettes out of reach and write down the circumstances in which you smoked. You also need to establish whether and how to continue the medicine you are taking, and plan what to do when the urge to smoke comes back.

1. Put out the cigarette and throw away the rest of the pack, along with the lighter and the ashtray. In a study in which participants recorded lapses in real time, they happened more often where cigarettes were easy to get, where smoking was allowed and where other people were smoking (8).
2. Do not take an extra dose of your medicine, and do not stop it without consulting a doctor or pharmacist.
3. Write down what happened: what time it was and where you were, who was there, whether alcohol was involved, and what was happening just before you reached for the cigarette. This note will help you work out what triggered the urge to smoke, and it will be useful at your appointment.
4. Tell someone about the lapse: the person in charge of your treatment (a doctor, psychologist or addiction therapist) or someone close to you who knows you are quitting. The person in charge of your treatment can assess straight away whether anything in the course needs to change.
5. Work out when the urge to smoke may come back, for example this evening, with tomorrow's coffee or on Friday's night out, and decide in advance what you will do differently then. We describe ways of getting through the hardest few minutes in our article on nicotine cravings.
6. Count your smoke-free days from today. You can carry on with the same attempt to quit. There is no need to wait until Monday or the first day of the month.

What should you do about your stop-smoking medicine after a lapse?

After a lapse, you should not exceed the recommended dose of your medicine. Further treatment, including whether to stop the product, needs to be discussed with a doctor or pharmacist. What to do depends on which medicine you are using. Decisions about treatment with varenicline or bupropion, which are prescription-only, are made by the doctor who prescribed them.

Should you stop a course of cytisine after a lapse?

A course of Desmoxan or Recigar lasts 25 days, and smoking has to be given up by day 5 at the latest. You should not smoke during treatment, because this may increase side effects. Combining these medicines with products containing nicotine may increase nicotine's side effects. While taking Recigar, you should not use other nicotine products. So you should not add a nicotine patch or gum to the course on your own (9, 10). If treatment does not bring the expected results, it should be stopped. The course can be repeated after 2-3 months.

If you smoke a cigarette during a course of cytisine, you should contact a doctor or pharmacist to agree on what to do next. You should not change the dosage on your own or restart the course. We describe the reasons for going back to smoking despite taking cytisine, and what to do next, in our article when cytisine does not work.

Should you keep using a nicotine patch or gum after a lapse?

With nicotine replacement therapy (NRT), studies support not stopping treatment after a lapse. In a US study comparing a 21 mg patch with a patch without nicotine, data were analysed from 509 people who smoked in weeks 3-5 of treatment. In the group using the nicotine patch, 8.3% regained abstinence (at least 7 days without a cigarette) at week 6 and 9.6% at week 10, compared with 0.8% and 2.6% respectively in the group using the patch without nicotine (11). In another study, the high-dose patch had its strongest effect precisely on whether a lapse led to a relapse (12).

Smoking even small amounts of tobacco while using the NiQuitin Przezroczysty patch can lead to relapse. If you start smoking again, your treatment should be reviewed (13). People who have gone back to smoking despite using the Nicorette Invisipatch alone can combine it with gum, a lozenge or a spray (14). This change is best agreed with a doctor or pharmacist, because each product has its own maximum daily dose.

Someone who smokes a cigarette while using a nicotine patch takes in nicotine from both the patch and the smoke. With Nicorette Invisipatch, nicotine taken from other sources as well may lead to symptoms of overdose: nausea, vomiting, excessive salivation, abdominal pain, diarrhoea, excessive sweating, headache and dizziness. If symptoms of taking too much nicotine occur, nicotine use should be stopped temporarily. If the symptoms persist, the dose should be reduced or the product used less often.

What triggered the lapse after quitting smoking?

In studies, lapses were most often preceded by low mood and stress, drinking alcohol, being with smokers or easy access to cigarettes. Someone who carefully reconstructs what was happening before the lapse will find it easier to prepare for a similar situation next time.

Observations by Garvey et al. showed that relapse could not be predicted either from stress levels before quitting or from an increase in stress after quitting. Real-time records showed, however, that people who lapsed were usually in a worse mood at the time. So it makes sense to plan how to act in the specific situations in which you used to reach for a cigarette. A Cochrane review also covered separate programmes that taught people to recognise high-risk situations. They were delivered after quitting to people who were receiving treatment. These programmes gave no clear benefit in preventing relapse; the authors rated the certainty of this conclusion as moderate (16). Going over the circumstances of a lapse helps you prepare for the next similar situation, but it does not replace treatment.

We write about drinking alcohol during a course of cytisine in our article cytisine and alcohol. Someone who is also cutting down on drinking or staying abstinent from alcohol will find more information in our article on how to quit drinking and smoking. If the reason for reaching for a cigarette was fear of putting on weight, we describe the causes of weight gain and ways to limit it in our article on weight gain after quitting smoking.

When should nicotine dependence treatment be changed after a lapse?

It is a good idea to discuss changing your nicotine dependence treatment with a doctor if you smoked again in the second week after quitting, have smoked several days in a row or your nicotine cravings are not easing despite medication. The doctor decides on any change of medicine, dose or type of support.

Book an appointment without waiting if:

• you smoked in the second week after quitting; the authors of the nicotine patch studies recommended contacting patients in the first two weeks and possibly changing treatment if they had smoked during that time (4)
• you have smoked several days in a row or every week; this frequency of smoking is close to what studies already regarded as a relapse
• you are using the medicine as recommended, but strong urges to smoke are not easing
• lapses happen in a similar way on another attempt to quit with the same medicine

The doctor may change the medicine or its form, plan to repeat the course of cytisine after the required break in treatment, or suggest support from a psychologist. A Cochrane review brought together the results of 65 studies of people taking medication to help them quit smoking. At six months or longer, the proportion of non-smokers was higher in groups that were offered more sessions with a counsellor in person or by telephone than in groups with less support (RR 1.15). The proportion of non-smokers was about 15% higher in relative terms, which does not mean a difference of 15 percentage points (17).

A medicine bought at a pharmacy without a consultation does not always meet a person's needs. The choice depends on the number of cigarettes smoked, the patient's conditions and the medicines they take, so if you have lapsed several times after quitting, it is better to plan the next attempt with a doctor. At Nasz Gabinet, nicotine dependence treatment lasts 3 months and starts with a medical interview. Once you have been assessed as eligible, the doctor issues an e-prescription for the chosen medicine, and the module in the app reminds you about doses, counts your smoke-free days and includes a diary. For an additional fee, you can also have consultations with a psychologist.

We write about urges to smoke that come back after a few months without smoking in our article when the urge to smoke stops.

When do you need urgent help after a lapse?

Low mood, rarely accompanied by suicidal thoughts and suicide attempts, can be a symptom of nicotine withdrawal, including in people who are not taking any medicine. Quitting smoking can also make an existing mental illness, such as depression, worse. If a sense of hopelessness does not go away after a lapse, you should consult a doctor. Thoughts of taking your own life are a signal to seek help immediately at a hospital emergency department (SOR) or the admissions unit of a psychiatric hospital. You do not have to go alone; you can ask someone close to you to go with you. We describe how to tell low mood linked to nicotine withdrawal apart from depression in our article on mood after quitting smoking.

Symptoms of severe nicotine poisoning at high doses also need urgent medical help: a weak and irregular pulse, difficulty breathing, collapse and generalised seizures. This article does not replace a medical consultation.

Frequently asked questions

Do you have to start quitting all over again after one cigarette?

After one cigarette, you do not have to start quitting all over again or set a new date. Every further hour without a cigarette is a continuation of the same attempt to quit, and the most important thing is not to smoke a second one. After a lapse, you should not stop your medicine without consulting a doctor or pharmacist.

Can you smoke one cigarette during a course of cytisine?

During a course of Desmoxan or Recigar, you have to stop smoking by day 5 of treatment at the latest. From the day you stop smoking, you should not reach for cigarettes any more, because this may increase side effects. If you have smoked a cigarette again, you should discuss further treatment with a doctor or pharmacist. You should not change the dosage on your own or add a nicotine patch or gum. If treatment does not bring the expected results, the course should be stopped.

Does one cigarette after years of not smoking mean the addiction is back?

One cigarette after years of not smoking does not have to mean the addiction is back, but there is no way of predicting who will slip back into the addiction after a lapse. Mild urges to smoke can appear from time to time even months or years after quitting (18). Research on lapses mainly covers the first weeks and months. After years of not smoking, the advice remains the same: do not smoke a second cigarette, write down the circumstances of the lapse, and if such situations keep happening, go back to treatment.

Sources

1. Garvey AJ, Bliss RE, Hitchcock JL, Heinold JW, Rosner B. Predictors of smoking relapse among self-quitters: a report from the Normative Aging Study. Addict Behav. 1992;17(4):367-377. PMID 1502970, DOI
2. West R, Hajek P, Stead L, Stapleton J. Outcome criteria in smoking cessation trials: proposal for a common standard. Addiction. 2005;100(3):299-303. PMID 15733243, DOI
3. Hughes JR, Keely JP, Niaura RS et al. Measures of abstinence in clinical trials: issues and recommendations. Nicotine Tob Res. 2003;5(1):13-25. PMID 12745503
4. Kenford SL, Fiore MC, Jorenby DE et al. Predicting smoking cessation. Who will quit with and without the nicotine patch. JAMA. 1994;271(8):589-594. PMID 8301790, DOI
5. Hughes JR, Keely J, Naud S. Shape of the relapse curve and long-term abstinence among untreated smokers. Addiction. 2004;99(1):29-38. PMID 14678060, DOI
6. Shiffman S, Ferguson SG, Gwaltney CJ. Immediate hedonic response to smoking lapses: relationship to smoking relapse, and effects of nicotine replacement therapy. Psychopharmacology (Berl). 2006;184(3-4):608-618. PMID 16283258, DOI
7. Shiffman S, Hickcox M, Paty JA et al. Progression from a smoking lapse to relapse: prediction from abstinence violation effects, nicotine dependence, and lapse characteristics. J Consult Clin Psychol. 1996;64(5):993-1002. PMID 8916628, DOI
8. Shiffman S, Paty JA, Gnys M, Kassel JA, Hickcox M. First lapses to smoking: within-subjects analysis of real-time reports. J Consult Clin Psychol. 1996;64(2):366-379. PMID 8871421, DOI
9. Charakterystyka Produktu Leczniczego Desmoxan 1,5 mg, tabletki (zmiana tekstu 31.10.2025) [summary of product characteristics, in Polish]. Rejestr Produktów Leczniczych
10. Charakterystyka Produktu Leczniczego Recigar 1,5 mg, tabletki powlekane [summary of product characteristics, in Polish]. Rejestr Produktów Leczniczych
11. Ferguson SG, Gitchell JG, Shiffman S. Continuing to wear nicotine patches after smoking lapses promotes recovery of abstinence. Addiction. 2012;107(7):1349-1353. PMID 22276996, DOI
12. Shiffman S, Scharf DM, Shadel WG et al. Analyzing milestones in smoking cessation: illustration in a nicotine patch trial in adult smokers. J Consult Clin Psychol. 2006;74(2):276-285. PMID 16649872, DOI
13. Charakterystyka Produktu Leczniczego NiQuitin Przezroczysty 21 mg/24 h, system transdermalny [summary of product characteristics, in Polish]. Rejestr Produktów Leczniczych
14. Charakterystyka Produktu Leczniczego Nicorette Invisipatch (zmiana tekstu 10.03.2026) [summary of product characteristics, in Polish]. Rejestr Produktów Leczniczych
15. Dermody SS, Shiffman S. The time-varying effect of alcohol use on cigarette smoking relapse risk. Addict Behav. 2019;102:106192. PMID 31726424, DOI
16. Livingstone-Banks J, Norris E, Hartmann-Boyce J et al. Relapse prevention interventions for smoking cessation. Cochrane Database Syst Rev. 2019;(10):CD003999. PMID 31684681, DOI
17. Hartmann-Boyce J, Hong B, Livingstone-Banks J, Wheat H, Fanshawe TR. Additional behavioural support as an adjunct to pharmacotherapy for smoking cessation. Cochrane Database Syst Rev. 2019;6(6):CD009670. PMID 31166007, DOI
18. National Cancer Institute. Handling Nicotine Withdrawal and Triggers When You Decide To Quit Tobacco (updated 3 January 2022). cancer.gov