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4RX Store > Medication List > Stop Smoking drugs > Order Chantix online

Stop Smoking Medication (Chantix)

Generic name:
Brand name:
Chantix is a brand of the most effective and safe smoking cessation medication. The active agent of the drug is Varenicline. It both suppresses the need for nicotine as it replaces it binding with the receptors, and also minimizes the negative withdrawal effects. Read the full guide to know how to use the drug, what adverse effects it can cause, and so on.
Tobacco smoking cessation
To date, it is the most effective and safe medication for smoking cessation
Pfizer Pharmaceuticals
Pfizer Pharmaceuticals
Chantix (Generic Varenicline)
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  Generic Medication guide:

What is Chantix?

The product you may know as Chantix is made on the basis of the medicinal formulation Varenicline. It is a formulation designed as an aid for tobacco addiction quitting.

The active agent selectivity binds to 42 neuron nicotinic receptors. It simultaneously exhibits agonism and antagonism (suppression) when smoking nicotine. In simpler words, it satisfies the need of the body for nicotine being a partial substitution for it but also suppresses the receptors that react to smoking. This helps to cope both with physical discomfort caused by withdrawal and make smoking less enjoyable so that people who use it often report that they “forget” to smoke.

To date, this product is rightfully acknowledged the most efficient for tobacco addiction treatment and the most effective means that helps to cope with physical nicotine dependence. If you wish to quit smoking cigarettes, you should definitely buy Chantix.

Short drug info
Trade names Champix, Chantix, others
Routes of administration By mouth
Pregnancy category

AU: prohibited

US: C (Risk not ruled out)

Legal status

AU: S4 (Prescription only)

CA: Rx-only

UK: POM (Prescription only)

US: Rx-only

Protein binding <20%
Metabolism Limited (<10%)
Elimination half-life 24 hours
Excretion Renal (81–92%)

Who should not use Chantix?

Unfortunately, some people cannot use the medication even if they wish to quit smoking because the pills can cause severe adverse effects due to different present conditions.

Do not buy generic Chantix if you are:

- Allergic to the pills (have ever used them and suffered from severe adverse effects, or have severe negative symptoms with the first pills you just bought).

- Pregnant or breastfeeding.

- Have end-stage renal failure.

Besides, the medication is prohibited for kids and teens younger than 18.

How is Chantix used?

If you don’t find yourself in the contraindications list, you can take the pills based on the scheme:

Set the desired date of complete smoking cessation one-two weeks apart from your first Chantix pill.

For the first three days, 0.5 mg are used once a day.

From the fourth to seventh days, the dosage is 0.5 mg twice a day.

From the eight day of the course till the end of it, the daily dosage is 2 mg split into two intakes by 1 mg.

If you suffer from any adverse effects when the dosage is increased till the final one, you can lower it to 0.5 mg twice a day.

You can take the pills regardless of meals but try to take them at the same time every day to maintain the level of the active substance in the blood at the therapeutic level.

You need to take the pills for four months to ensure that you won’t start smoking again even if you quit smoking sooner. When using anti-smoking drugs, the risk of resuming smoking is increased immediately after treatment. If this risk is high, then a gradual dose reduction is possible.

What adverse effects can you develop when using Chantix?

When you buy Varenicline, you should keep in mind that it can become a cause of certain negative effects such as: Mood fluctuations, depressive states, apathy, sleepiness, general weakness, dysphoria, insomnia, irritability, feelings of displeasure and anger, anxiety, impaired concentration, motor anxiety, slow heartbeat, enhanced appetite or weight gain, exacerbation of concomitant mental disorders.

Many people also report nausea especially when the dosage of 1 mg a day or twice a day is used. Adverse reactions usually appear in the first week. They are usually mild to moderate and do not require therapy discontinuation unless you develop allergic reactions such as rash, swelling, or bronchospasm which are extremely rare.

Frequency of adverse effects associated with Chantix vs Placebo

Adverse effect
Number of patients = 821 (%)
Number of patients = 805 (%)
Abdominal Pain
Gastroesophageal reflux disease
Dryness of the mouth
Abnormal dreams
Sleep disorder
Distortion of the sense of taste
Runny nose
Shortness of breath
Upper Respiratory Tract Disorder
Increased appetite
Decreased appetite

If you have started using Chantix and experience any other symptoms not listed here, please refer to the medication guide that comes with the pills as it contains more detailed information.


Based on pharmacological properties and clinical data, Chantix does not have clinically significant medication interactions. Dose adjustment of Chantix or the medicines that used together with it is not required.

Special instructions

When you buy generic Varenicline, you should know that:

- There are consequences of quitting smoking. There are some physiological changes that occur after quitting tobacco smoking that can have an impact on some medicines effects so they may need dose adjustment (for example, theophylline, warfarin, and insulin). Tobacco smoking induces the CYP1A2 enzyme, so cessation can lead to an elevation in the level of substrates of this isoenzyme in the blood plasma.

- Neuropsychiatric symptoms. The use of the medication and smoking cessation can induce behavioral alterations, memory disorders, fears, psychoses, mood swings, aggressiveness, depression, suicidal behavior, and others. If you have any mental disorders or a history of mental disorders, it is advised to consult a doctor before you initiate smoking cessation with Chantix as it can be associated with aggravation of such disorders and a doctor can help you mitigate the risks.

- Individuals with a history of seizures or other complaints associated with convulsions should be careful when taking Champix. If you suffer from any cardiovascular diseases, you should inform the attending physician in case of appearance of new symptoms of heart disease or worsening of existing ones.

Influence on the ability to drive vehicles and work with mechanisms

Chantix may have a slight or moderate effect on the ability to drive vehicles, machines, and mechanisms. It can potentially cause dizziness and drowsiness so it is advised to refrain from driving a vehicle, complex machines and mechanisms, and other potentially dangerous activities if it is determined that this drug interferes with the proper implementation of such activities. Patients should evaluate their response to the drug before proceeding with driving, sophisticated vehicles, or performing other potentially dangerous tasks.

Where is it better to buy Chantix?

You may already know that generic medications are much cheaper than the branded ones with the same composition. The same is with Chantix and Varenicline, it’s active agent. Besides, if you get the medication from an online drugstore you can also save substantially as our pharmacy, for example, doesn’t ask you for a prescription and sets the most attractive prices for high-quality generics.

Free prescription
Our doctor prescribes online for free, and there is no doctor’s consultation fee.

Discrete packaging
All orders arrive in discrete unmarked parcels. We leave the shipment description blank.

For more answers see the FAQ section


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