Quit Smoking , Medication & Methods
Stop Smoking Medication Explained — Champix, Bupropion and Zyban: What They Do and What They Don't.
Aman Doda
India's Quit Nicotine Coach • quitsmartly.com
May 31, 2026
Stop Smoking Medication Explained — Champix, Bupropion and Zyban: What They Do and What They Don't.
Important note before you read: This article is for educational purposes only. It is not medical advice. All prescription medications mentioned here — Champix (varenicline) and Zyban (bupropion) — require a doctor’s prescription in India. Please consult a qualified doctor before starting, stopping, or changing any medication.
Never self-medicate with prescription drugs.
If you are looking for information about stop smoking medication — you are in the right place.
This article explains each medication clearly. What it does. How it works. What the side effects are. What it costs in India. And — most importantly — why most people who use these medicines still end up going back to smoking.
That last part is what most information about these medicines leaves out. This article will not.
The Two Main Prescription Stop Smoking Medications in India
There are two prescription medications commonly available and used in India for smoking cessation:
- Champix — also called Varenicline 2. Zyban — also called Bupropion
Both require a doctor’s prescription. Both work on the brain — not on nicotine patches on the skin. And both work in completely different ways from each other.
Let us go through each one.
Champix — Varenicline
What is Champix?
Champix is the brand name for a medication called Varenicline, made by Pfizer. It is available in India and can be ordered on platforms like PharmEasy, Netmeds, and Apollo Pharmacy — but only against a valid prescription.
It is specifically designed for smoking cessation. It was not originally developed for something else — unlike Zyban, which we will come to shortly. Varenicline was made specifically to help people quit smoking.
How Does Champix Work — In Simple Terms
Here is the simplest way to understand it.
Every time you smoke, nicotine travels to the brain and fits into certain receptors — like a key fitting into a lock. When nicotine enters these receptors — dopamine releases. You feel relief. Pleasure. Calm.
Champix works by doing two things at the same time:
First — it fits into those same receptors and blocks nicotine from getting in. So when you smoke while taking Champix — the satisfaction is significantly reduced. The cigarette does not give you what it used to give you.
Second — it releases a small, steady amount of that same relief on its own — without nicotine. So the craving, which is partly driven by the brain wanting that dopamine release, is reduced.
The result — smoking becomes less satisfying. Cravings become less intense. And the first week of quitting — which is physically the hardest — becomes more manageable.
How to Take Champix
Champix is taken as a tablet. The standard course is 12 weeks.
The dosing builds up gradually:
- Days 1 to 3: 0.5mg once daily
- Days 4 to 7: 0.5mg twice daily
- Day 8 onwards: 1mg twice daily
You do not have to stop smoking immediately when you start. Most people set a quit date during the second week of treatment — by which point the medication has built up in the system and smoking has already become less satisfying.
Always follow the schedule your doctor gives you. Do not adjust the dose yourself.
Side Effects of Champix
The most common side effects are:
- Nausea — the most frequently reported. Usually mild and reduces over time. Taking the tablet with food helps.
- Vivid dreams or unusual dreams — common, especially with the 1mg dose
- Sleep disturbance — some people find it hard to sleep
- Headache
- Constipation or gas
Less common but important to be aware of:
- Mood changes — some people report low mood, irritability, or depression while taking Champix. If you notice significant changes in your mood or behaviour — contact your doctor immediately.
- In rare cases — serious skin reactions have been reported.
Always tell your doctor your full medical history before starting Champix. It should be used with caution if you have kidney problems, heart conditions, seizures, or psychiatric disorders. It is not recommended during pregnancy.
Champix Cost in India
Based on current listings:
- Champix Starter Pack (25 tablets — 0.5mg and 1mg mixed) — approximately ₹1,061 on PharmEasy
- Champix 1mg maintenance pack (28 tablets) — approximately ₹1,700 MRP
A full 12-week course involves both a starter pack and multiple maintenance packs. Total cost for a complete course is typically between ₹5,000 and ₹8,000 depending on where you buy and the discounts available.
How Effective is Champix?
A clinical trial published in JAMA found that Champix helped 44.4 percent of people continuously quit smoking during weeks 9 to 12 of treatment — compared to 17.7 percent with a placebo.
That is a significant improvement in the short term.
However — at the 12-month mark — the number who stayed quit was lower. According to the University of Oxford’s analysis of 150,000+ smokers, varenicline helps around 14 in 100 people quit successfully at one year.
That means 86 out of 100 people who take Champix are back to smoking within a year.
Zyban — Bupropion
What is Zyban?
Zyban is the brand name for Bupropion in India. It was originally developed and approved as an antidepressant — under the brand name Wellbutrin. It was later noticed that patients taking it for depression were finding it significantly easier to quit smoking. It was then approved as a stop smoking medication.
Like Champix — it requires a prescription in India.
How Does Zyban Work — In Simple Terms
Bupropion works on a completely different mechanism from Champix.
It does not interact with nicotine receptors directly. Instead — it works on the brain’s dopamine and noradrenaline systems. These are the same systems that are disrupted during nicotine withdrawal — causing the restlessness, irritability, and low mood that make quitting so difficult.
By working on these systems — bupropion reduces the intensity of withdrawal symptoms. The irritability and the restlessness are less severe. The craving is less intense. The first few weeks feel more manageable.
The exact mechanism is not fully understood even by medical researchers — which is unusual for an approved medication. But the clinical results show that it works.
How to Take Zyban
Zyban is typically taken as a slow-release tablet. The standard course is about 9 weeks.
Dosing:
- Days 1 to 6: 150mg once daily
- Day 7 onwards: 150mg twice daily (if tolerated)
You usually start Zyban one to two weeks before your quit date — while you are still smoking. By the time the quit date arrives, the medication has built up in the system.
Always follow your doctor’s instructions exactly.
Side Effects of Zyban
Common side effects:
- Dry mouth
- Difficulty sleeping — particularly if the second dose is taken too late in the day
- Headache
- Nausea
- Dizziness
Important warnings:
- Zyban can lower the seizure threshold — meaning it increases the risk of seizures in people who are vulnerable. Anyone with a history of seizures, eating disorders, or who is taking certain other medications should not take Zyban. Tell your doctor your complete medical history.
- Mood changes — similar to Champix, some people report mood changes. Contact your doctor if this happens.
- Zyban interacts with several other medications. Always give your doctor a full list of everything you are currently taking.
How Effective is Zyban?
A real-world clinical study published in PubMed found the validated 12-month abstinence rate with bupropion was 21 percent — meaning around 21 in 100 people who took bupropion in a real-life setting were still smoke-free at one year.
That is better than NRT patches alone — but it still means 79 out of 100 people who take Zyban return to smoking within a year.
What These Medications Do Well
Let us be fair before we explain the limitation.
Both Champix and Zyban genuinely help with the hardest part of quitting — the first few weeks.
The physical withdrawal from nicotine peaks around day three and eases by the end of week one. During this period — the restlessness, irritability, and craving are at their worst. Both medications reduce the intensity of this experience. For people who have struggled to get through the first week — this is a real and meaningful benefit.
Champix specifically reduces the satisfaction of smoking — which makes it easier to disengage from the habit during the early period. Many people find that by week two or three on Champix, they are smoking significantly less without conscious effort.
These are genuine benefits. Acknowledging them is important.
Why Most People Still Go Back — The Root Cause Was Never Fixed
Here is the honest truth. And this is what most information about these medicines does not explain.
Both Champix and Zyban work on the physical and chemical side of nicotine addiction. The brain chemistry. The withdrawal. The craving intensity in the first few weeks.
And the physical dependency resolves within a week regardless. The body is done with nicotine by day seven.
So here is the question. If both medication and the body are done with the physical craving by week one or two — why are 86 out of 100 Champix users back to smoking by the end of the year?
Because the chemical craving is only one part of this addiction.
The other part — the part that drives almost every relapse — is the mental map.
Over years of smoking, the brain built thousands of automatic connections between specific moments and the act of smoking. After a meal. Under stress. First thing in the morning. In the car. The break between meetings.
Every single one of these moments was wired — thousands of times — to the action of reaching for a cigarette.
Champix does not see this map. Zyban does not see this map.
Both medications do their job — reducing the chemical craving and the withdrawal discomfort. And then they are done.
But the map remains. Completely intact. Every trigger still connected to smoking.
And when the medication course ends — and a difficult day arrives three months later, or six months later — the map activates exactly as it always did. The hand reaches. Before a decision has been made.
That is why 86 out of 100 Champix users go back. The medication addressed the chemical side. The mental root was never touched.
Using Medication and Addressing the Root — Together
Here is the most honest recommendation.
If a doctor prescribes stop smoking medication — take it as prescribed. It can genuinely make the first few weeks more manageable. Do not ignore that benefit.
But medication alone is not a complete plan.
The mental map — the deeply automatic patterns the brain built around smoking — requires a structured psychological approach to genuinely change. Not willpower. Not patches. A structured approach that works on the patterns, the triggers, the beliefs, and the identity.
QSFS — the Quit Smoking and Nicotine Freedom System — works on this mental root directly. It is not a replacement for medication prescribed by a doctor. It addresses a completely different part of the addiction — the part that medication consistently leaves untouched.
Eleven live sessions over three weeks. Coaches available throughout. The quit date comes in week two — when the mental preparation is underway. Not on day one through force.
Many students who have used Champix or Zyban before describe the QSFS experience as completely different. Not that they were managing a craving. That the craving stopped arriving the way it used to.
That is the mental map having changed.
Dr Koushik Chaki's Story
Dr Koushik Chaki is a Clinical Cardiologist and Diabetologist who smoked for years. He understood the pharmacology of these medications at a professional level. He knew what Champix did and did not do. He went through QSFS and experienced the shift that medication alone could not produce.
Watch his story:
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Questions People Ask
Champix (varenicline) is currently considered the most effective prescription stop smoking medication available. The University of Oxford’s analysis of 150,000+ smokers found varenicline helps around 14 in 100 people quit successfully at one year — the highest rate among pharmaceutical options. Zyban (bupropion) helps around 21 in 100 in real-world settings, according to a PubMed published clinical study. Both require a doctor’s prescription. However, even the most effective medication leaves the mental patterns of addiction untouched — which is why most people still relapse within a year.
Yes. Champix (varenicline) is available in India on prescription from platforms including PharmEasy, Netmeds, Apollo Pharmacy, and MedPlus. A starter pack costs approximately ₹1,061 and maintenance packs cost approximately ₹1,700 for 28 tablets. A full 12-week course typically costs between ₹5,000 and ₹8,000. It must be prescribed by a doctor — it is not available over the counter.
Champix (varenicline) works by blocking nicotine receptors in the brain and releasing a mild version of the same relief — reducing both the satisfaction of smoking and the intensity of cravings. Zyban (bupropion) was originally an antidepressant and works on dopamine and noradrenaline systems to reduce withdrawal symptoms and cravings. Both require prescriptions. Champix is generally considered the more effective of the two based on clinical trial data. Both should only be taken under a doctor’s supervision.
Common Champix side effects include nausea, vivid dreams, sleep disturbance, and headache. Rare but serious effects include mood changes — if mood changes occur, contact a doctor immediately. Common Zyban side effects include dry mouth, insomnia, headache, and dizziness. Zyban significantly increases seizure risk in people with relevant history — this medication is not suitable for people with a history of seizures, eating disorders, or certain other conditions. Both medications have specific contraindications — always give a doctor a full medical history before starting either one.
Because both Champix and Zyban address the chemical side of addiction — the withdrawal and craving in the first few weeks. But the physical craving resolves on its own within a week. What brings people back months later is the mental map — the automatic connections the brain built over years between specific moments and smoking. These patterns are completely untouched by medication. When the right trigger arrives months later, the pattern activates automatically. This is why 86 out of 100 Champix users return to smoking within a year.
Both medications have significant interactions with other drugs. Champix should be used with caution alongside certain medications for kidney disease, heart conditions, and psychiatric conditions. Zyban interacts with many medications including MAO inhibitors, certain antidepressants, and others — always give your doctor a complete list of everything you are currently taking. Never take either medication without a doctor’s assessment and prescription.
Yes. QSFS and medication address completely different parts of the addiction. Medication helps with the physical withdrawal and craving in the first few weeks. QSFS addresses the mental patterns — the automatic connections the brain built around smoking — which medication cannot touch. Used together — with medication managing the first weeks and QSFS addressing the mental root — the approach is more comprehensive than either alone.
Medication addresses the chemical side. The mental map remains.
That is what determines whether a year from now you are free — or back to where you started.
Disclaimer
Legal & Medical Disclaimer: This article is written for general educational and informational purposes only. It does not constitute medical advice of any kind. The information about medications — including Champix (varenicline) and Zyban (bupropion) — is general in nature and based on publicly available information. It is not a substitute for professional medical advice, diagnosis, or treatment.
All prescription medications mentioned in this article require a valid prescription from a qualified and licensed medical doctor in India. Never self-medicate with prescription drugs. Never start, stop, or change the dose of any medication without consulting a doctor.
Aman Doda and QSFS are not doctors and do not prescribe medication. Nothing in this article should be taken as a recommendation to take or avoid any specific medication.
If you experience side effects from any medication — contact your doctor immediately. If you are facing a medical emergency — call your local emergency services immediately.
QSFS — the Quit Smoking and Nicotine Freedom System — is a structured behavioural and psychological coaching program designed to help individuals address the mental dimensions of nicotine dependence. It is not a medical treatment. It does not diagnose, treat, cure, or prevent any disease or medical condition. It is intended to complement professional healthcare — not replace it. Individual results vary from person to person.