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Chantix (also marketed as Champix) is a medication prescribed for individuals who wish to quit smoking and also goes under the name of Varenicline. This is one of the most frequently prescribed smoking cessation medications on the market. However, although the ingredients of Chantix makes it a highly effective drug, all individuals who want to benefit from the full advantages of Chantix are advised to supplement the use of this clinical product with counselling support and behaviour modification.
Chantix is an effective remedy that is widely employed by patients from all around the world who want to quit smoking (either due to their physician's recommendations or to their own decision). However, some physicians may prescribe a therapy with Chantix for other medical purposes (aims) that have not been mentioned in this clinical guide-book. For further information, contact a well trained pharmacist.


Before an individual's therapy with Chantix (Varenicline) is approved, his or her personal health care provider has to investigate the patient's general health condition, the individual's clinical history, and so on. The presence of certain medical disorders is known to affect an individual's ability to start using Chantix regularly; for example, patients who are suffering from mental illness or kidney disorders must not start using Chantix, as unwanted complications may arise.
A prolonged therapy with Varenicline may trigger some unpleasant adverse reactions. Among them, one should pay great attention to drowsiness and other similar symptoms, as such reactions are known to impair the patient's reactions and / or thinking. This means that all patients should avoid operating dangerous machinery (that can produce severe, life-threatening consequences), driving, and other similar activities - at least until they know up to what extent the use of Chantix is able to affect them. If you notice any severe mood changes or behavior changes, if you develop depression, anxiety, suicidal thoughts, and other similar symptoms, you should immediately end your therapy with Chantix and seek the support of your personal health care provider. However, such conditions are quite rare.

Intake Guidelines

When your health care specialist prescribes you the use of Chantix, he or she will give you a set of detailed instructions regarding the most adequate ways in which you should use your doses of Chantix. You are not allowed to change your therapy schedule with Chantix in any way, especially without the approval of your health care provider. Such changes could affect the beneficial results of your therapy; furthermore, such conditions could lead to further, dangerous consequences. If you want to know more about Chantix and its effects, we strongly advise you to study the medicine's leaflet. If you have any questions regarding your use of Chantix you should ask your personal physician (PD).
A patient should start his or her intake of Varenicline 7 days before he or she quits smoking. The use of a dose of this remedy must be accompanied by a glass of liquid (water). Regular use of Chantix is essential in order to ensure that the therapy will have the desired effects. In order to avoid stomach upset symptoms, a patient should take his or her dose of Chantix after one of their main meals. The average therapy span with Chantix lasts for 3 months. However, your health care provider may advise you to continue your therapy with Chantix for another couple of weeks in order to make sure than your chances of re-starting smoking are minimal.
During your therapy with Chantix, you should undergo regular kidney function tests, as it is important for your health care provider to constantly monitor the effects of Chantix on your system.


When you start your therapy with Chantix, your physician will prescribe you a low dose of Chantix. Your PD will (later on) increase your daily intake of this medical remedy, especially after you have stopped smoking. Your personal health care provider may also want to make regular changes to your daily dose of Chantix, in order to make sure that you receive the best possible effects due to your therapy with Chantix.


Over-doses with Chantix are quite common, as many individuals tend to take double doses of Chantix if they forget to take a prescribed dose of Chantix. This is strictly forbidden, as over-dosing is a dangerous procedure. We have no information regarding the potential reactions that may develop in such circumstances. They may be some-how related to the common side effects of Chantix.

Missed Dose

Your personal health care provider will tell you what to do in case you miss taking one or more of your daily doses of Chantix. The use of double doses of this remedy is not allowed, as this may trigger severe, life-threatening consequences. Any disturbance in your therapy schedule (including missed doses of Chantix) affects the beneficial results of your treatment.

Side Effects

The prolonged use of Chantix is known to trigger a set of clinical manifestations (especially if the patient's therapy schedule with Chantix is commonly disturbed by missed doses, over-doses, and so on). The most common adverse reactions that have been associated with the use of Chantix include: tiredness, weakness, nausea, stomach pain, constipation, vomiting, gas, indigestion, increased appetite, and so on. Other patients have complained of headaches or other similar conditions.


The daily use of this medical remedy (commonly known as Chantix) may affect the individual's therapy with other medicines. For example, the use of Warfarin (or any other blood thinner), Insulin, Theobid, Theoclear, Theo-Dur, Respbid, Uniphyl, and so on, is known to interact with the treatment with Chantix. For further information, contact your local pharmacist.

Other Brand Names

In some countries Chantix may also be known as:
- Champix;
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