The popular framing of quitting smoking as a contest of willpower has done a lot of damage, especially in psychiatric populations. The honest truth is that quitting is hard for almost everyone and slightly harder for people with schizophrenia — but the strategies that work are well established, well studied, and increasingly accessible. The single biggest predictor of success is using more than one tool at a time.
The evidence-based recipe for quitting smoking in schizophrenia is medication (varenicline, NRT, or bupropion) combined with behavioural support, with explicit coordination with your psychiatrist about medication levels.
Step one: deciding to try (and not feeling guilty if you've tried before)
Most successful quitters needed several attempts. The CDC estimates that the average smoker tries to quit 8 to 11 times before succeeding. Each attempt teaches you something — what triggers you, what works for cravings, what doesn't. Treat past attempts as data, not failure.
Step two: pick a quit method, not just a quit date
Setting a date without a plan is the most common reason quit attempts fail in the first 48 hours. The methods with the strongest evidence in schizophrenia, in rough order of effectiveness:
Varenicline (Chantix)
A partial agonist at the α4β2 nicotinic receptor — it provides enough nicotinic stimulation to ease withdrawal while blocking cigarettes from producing their full reward. The EAGLES trial (Anthenelli et al., 2016, The Lancet) — the largest cessation trial ever done in psychiatric and non-psychiatric populations — found varenicline produced higher quit rates than NRT, bupropion, or placebo, with no clear excess of neuropsychiatric events in the schizophrenia subgroup. The FDA removed its boxed warning about psychiatric side effects in 2016 based on this trial.
Nicotine replacement therapy (combination)
Patch as the foundation, plus a short-acting form (gum, lozenge, inhaler) for cravings. Doubles quit rates compared with placebo. See our NRT guide for the practical detail.
Bupropion (Zyban, Wellbutrin)
An antidepressant that also reduces cravings. Roughly equivalent to single-form NRT. Should be used cautiously in people with a seizure history (it modestly lowers the seizure threshold) and can interact with several antipsychotics — coordinate with your prescriber.
Combination approaches
Varenicline plus nicotine patch is being studied and shows promising early results for highly dependent smokers. Some patients use NRT to bridge from cigarettes to varenicline.
Step three: pair medication with behavioural support
Medication and behavioural support together produce roughly twice the quit rates of either alone. Options range from intensive to minimal:
- Quit lines — free in most countries. In the US: 1-800-QUIT-NOW. They will call you back, schedule check-ins, and in many states mail you free NRT.
- Group programs — many community mental health centres now run smoking cessation groups specifically for people with serious mental illness. The Department of Mental Health in your state likely funds these.
- Tobacco treatment specialists — clinicians with specific training. Often available through cancer centres, hospitals, and some primary care practices.
- Text-message programs — SmokefreeTXT in the US is free.
- Apps — quitSTART, Smoke Free, and others offer self-paced support.
Step four: plan for the first 72 hours
Withdrawal symptoms peak in the first 3 days and gradually ease over 2 to 4 weeks. Specific things that help:
- Throw out cigarettes, lighters, and ashtrays before quit day.
- Pre-load short-acting NRT — keep it in your pocket, on your nightstand, in your bag.
- Tell at least one person who will check in. A peer support worker is ideal.
- Plan replacement behaviours for trigger moments — tea instead of post-meal cigarette, walk after waking instead of morning smoke.
- Avoid alcohol the first weeks — it impairs decision-making and triggers strong cravings.
- Use the 4 D's for a craving: Delay (5 minutes), Drink water, Distract yourself, Deep breathe.
Step five: tell your psychiatrist before you quit
Tobacco smoke induces the CYP1A2 liver enzyme. Quitting can roughly double clozapine levels and significantly raise olanzapine levels within 1 to 2 weeks, sometimes producing severe sedation, tremor, or seizures. Your prescriber can plan a proactive dose reduction and a level check. This applies whether you switch to NRT, vaping, or nothing at all — it is the smoke, not the nicotine, that causes the interaction.
Other medications affected to a lesser degree include haloperidol, fluphenazine, and some others. Your prescriber will know which apply.
Step six: be honest about lapses
A lapse (one cigarette) does not have to become a relapse (back to regular smoking). Most successful quitters had at least one lapse during their final attempt. The harmful response is "I've ruined it, may as well smoke today and start again Monday." The helpful response is "That happened. The plan still applies. Next craving I'll use my lozenge."
Step seven: address the parts of life cigarettes were doing for you
For many people with schizophrenia, smoking has done multiple jobs at once: brief cognitive boost, stress regulation, social glue with other smokers, structured pause in an unstructured day, momentary pleasure. Trying to quit without consciously replacing these functions usually fails. Things that help:
- A daily walking routine — both for stress and for cardiovascular benefit.
- Connection with non-smoker peers, if your social network is heavily smoker-centric.
- A planned daily ritual to mark transitions (morning, after meals, end of day) — tea, music, prayer, journaling.
- Cognitive remediation or skills training if cognitive symptoms feel worse off cigarettes.
What if it isn't working?
If you've tried NRT or varenicline alone and lapsed, the answer is rarely "you weren't motivated enough." It is usually "the dose was too low, the duration too short, or the behavioural support missing." Going back to your prescriber to re-strategise — perhaps combining varenicline plus patch, extending duration, adding a quit line, switching to vaping for harm reduction — almost always beats giving up.
The long view
Within hours of quitting, carbon monoxide levels fall. Within weeks, lung function begins to recover. Within a year, heart attack risk halves. Within 10 to 15 years, lung cancer risk approaches that of someone who never smoked. For someone with schizophrenia who already faces elevated cardiovascular and metabolic risks, quitting smoking is the single highest-impact lifestyle change available.
This article is for educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified mental health professional. If you or someone you know is in crisis, call or text 988 in the US, or your local emergency number.