Quitting drinking and smoking at the same time is one of the hardest health changes you can make, but it’s also one of the most effective. The two habits reinforce each other neurologically: nicotine triggers stress hormones that increase alcohol cravings, and alcohol weakens your resolve to stay away from cigarettes. That biological loop means tackling both together, rather than one at a time, often produces better results than you’d expect.
Why These Two Habits Fuel Each Other
If you’ve noticed that drinking makes you want to smoke, or that smoking makes you want to drink, that’s not just a behavioral habit. Nicotine increases stress hormones that directly boost the desire to drink alcohol. Research in animal models has shown that nicotine-driven stress hormones can increase alcohol consumption on their own, independent of social setting or willpower. Smokers consistently drink more alcohol than nonsmokers, and this drug interaction is a major reason why.
The connection also runs in reverse. A large international study of over 1,000 ex-smokers across Canada, the U.S., England, and Australia found that heavy alcohol use more than doubled the risk of smoking relapse among people who had been smoke-free for over a year. In other words, even after you’ve successfully quit smoking, drinking can pull you back. This is why addressing both substances matters, even if one feels like the “bigger” problem.
Quitting Both at Once vs. One at a Time
Conventional wisdom used to say you should quit one thing at a time so you don’t overwhelm yourself. The evidence tells a different story. Studies on simultaneous cessation show that quitting both substances at once is feasible, and people who try it are more likely to follow through on treatment. In one study comparing simultaneous versus sequential approaches, 62% of people in the simultaneous group started counseling and 50% made quit attempts, compared to just 39% making quit attempts in the group that delayed one substance. The sequential group also had high dropout rates, with only 30% completing the delayed treatment phase.
The logic is straightforward. If you quit smoking but keep drinking, every night out becomes a relapse trigger. If you quit drinking but keep smoking, the nicotine-driven stress hormones keep nudging you toward a drink. Removing both at once breaks the feedback loop.
That said, if you’re physically dependent on alcohol (experiencing shakes, sweating, or other withdrawal symptoms when you stop), quitting alcohol safely may require medical supervision first. Alcohol withdrawal can be dangerous in ways that nicotine withdrawal is not.
What Actually Works: Medication Options
The most effective approach combines medication with behavioral support. Using both together produces better quit rates than either one alone, and this is backed by the highest level of clinical evidence.
For Smoking
Three first-line medications are well established. Nicotine replacement therapy (patches, gum, lozenges, inhalers, or nasal spray) supplies nicotine without the harmful chemicals in cigarette smoke. Combining a patch with an oral form like gum or lozenges is now the standard approach, delivering nicotine closer to the levels your body is used to from cigarettes.
Varenicline works differently. It partially activates the same brain receptors that nicotine targets, reducing cravings and making cigarettes less satisfying if you do slip. Abstinence rates on varenicline reach about 43% at 12 weeks. Bupropion, originally developed as an antidepressant, also helps with smoking cessation and can be combined with nicotine replacement.
For Both Drinking and Smoking
Some medications show promise for tackling both habits. Varenicline, beyond its smoking cessation effects, has been shown to reduce alcohol craving, drinks per day, and heavy drinking days compared to placebo in clinical trials. It reduced alcohol-related cigarette craving specifically, though this didn’t always translate into higher smoking quit rates among heavy drinkers.
Naltrexone, a medication commonly used for alcohol dependence, also appears to blunt cigarette cravings during drinking. In a controlled study, people who took naltrexone for five days experienced significantly less craving for both alcohol and cigarettes compared to placebo. Researchers are actively studying the combination of varenicline and naltrexone together for people trying to quit both.
Behavioral Strategies That Make a Difference
Medication handles the neurochemistry, but you also need tools for the moments when cravings hit. Cognitive behavioral therapy is recommended as part of any cessation plan, and it’s particularly useful for dual cessation because it targets the patterns shared by both habits.
The core work involves three things. First, identifying what triggers your use. This might be specific times of day, emotional states like stress or boredom, social situations, or even physical locations like a bar or your back porch. Second, building alternative responses for those moments. If you always smoked after dinner, you need a replacement activity that’s ready before the craving arrives, not something you scramble to think of in the moment. Third, learning to handle difficult emotions without substances. For many people, both drinking and smoking serve as emotional regulation tools, and quitting both means finding new ways to manage stress, anxiety, loneliness, or frustration.
Motivational interviewing, a counseling style that helps you explore your own reasons for change rather than being lectured, has also been shown to be effective. Programs that combine weekly individual counseling sessions for about three months, sometimes followed by group booster sessions, show strong results. Even a few sessions with a trained counselor can significantly improve your odds.
Managing the First Three Months
The early weeks are the hardest. Nicotine withdrawal peaks within the first few days and largely subsides within two to four weeks. Symptoms include irritability, difficulty concentrating, increased appetite, and sleep disruption. Alcohol withdrawal, if present, typically peaks within 48 to 72 hours and can range from mild anxiety and insomnia to severe symptoms requiring medical attention.
Within three months of quitting smoking, you’ll cough and wheeze less, your immune function improves, and circulation to your hands and feet gets noticeably better. Your lungs start clearing out accumulated mucus and tar. By six months, stress levels typically drop (despite the common fear that quitting will make stress worse), and the persistent cough fades. After a year, your lungs are measurably healthier and breathing is significantly easier than it would have been.
Alcohol’s timeline is different. Sleep quality often improves within a couple of weeks. Liver enzymes can normalize within weeks to months depending on prior damage. Blood pressure drops. Many people notice clearer thinking and better mood stability within the first month.
Protecting Yourself Against Relapse
The international study on smoking relapse revealed something counterintuitive. Among people who had quit smoking for less than a year, moderate drinking didn’t significantly increase relapse risk. But for those who had been smoke-free for more than a year, moderate or heavy drinking more than doubled the odds of picking cigarettes back up again. This suggests that even long after you’ve quit, alcohol remains a threat to your progress with smoking.
Practical steps to reduce relapse risk include avoiding your usual drinking and smoking environments for the first several months, telling the people you drink and smoke with that you’ve quit (so they stop offering), and having a plan for high-risk situations before they happen. If you know a work event or party is coming up, decide in advance what you’ll drink instead, how long you’ll stay, and what you’ll do if cravings get intense.
Alcohol use is consistently associated with lower quit rates and higher relapse for smoking. If you find you can’t stay off cigarettes while drinking even moderately, that’s not a personal failing. It’s the neurobiology at work, and it may mean that reducing or eliminating alcohol is a necessary part of staying smoke-free.
Building a Quit Plan
Pick a quit date for both substances, ideally the same day. In the week before, talk to a doctor or pharmacist about which medication makes sense for you. If you drink heavily, be honest about how much, because your provider needs to know whether alcohol withdrawal could be a safety concern.
Line up behavioral support. This could be a formal program, a counselor who specializes in substance use, a telephone quitline, or a combination. Remove cigarettes, lighters, ashtrays, and alcohol from your home. Stock your fridge with non-alcoholic drinks you actually enjoy, not as an afterthought but as a deliberate replacement.
Expect the first two weeks to be rough and plan for it. Reduce obligations where possible. Get extra sleep. Move your body, even if it’s just walking, because exercise blunts cravings for both nicotine and alcohol. Tell at least one person what you’re doing so you have accountability. And if you slip on one substance, don’t use it as permission to abandon the other. A lapse is a single event. A relapse is a return to the old pattern. The difference is what you do next.