Chantix (Varenicline) Customer Reviews


Rx Prescription Required    RxFormulation : Tablet

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Varenicline is a pharmacological aid that assists adults in quitting smoking. For optimal efficacy, use this medication in conjunction with a comprehensive stop-smoking program that includes education, support, and counselling. Smoking cessation not only decreases the likelihood of heart and lung disease, but also reduces the risk of cancer.

Varenicline operates by inhibiting nicotine’s effects on the brain that stimulate the desire to smoke. Discuss the advantages and drawbacks of this medication, as well as other methods to quit smoking, including nicotine replacement therapy, with a healthcare professional.

Uses and Dosage

Varenicline is administered orally in tablet form. It is prescribed to be taken once daily initially and then twice daily in the morning and evening. After eating, take varenicline with a full glass of water, and make an effort to consume it at the same time(s) every day. Adhere to the medication regimen precisely as directed, and avoid taking more or less than recommended, or using it more frequently than instructed.

At the beginning of treatment, your doctor will probably start you on a low dosage of varenicline and gradually increase it over the first week.

There are three methods for taking varenicline to aid in smoking cessation:

First, you can select a quit date to stop smoking and begin taking varenicline one week before that date. During this first week of varenicline treatment, you may continue to smoke, but ensure that you make an effort to quit smoking on the chosen quit date.

Second, you may begin taking varenicline and then quit smoking between eight and 35 days after starting treatment with varenicline.

Finally, if you are uncertain if you are ready or if you do not want to quit smoking abruptly, you can commence taking varenicline and gradually stop smoking over 12 weeks of treatment.

It may take a few weeks to experience the complete benefits of varenicline, and there is a possibility that you may slip and smoke during your treatment. If this occurs, you may still be able to quit smoking. Continue to take varenicline and make an effort not to smoke.

Typically, varenicline is taken for 12 weeks. If you have successfully stopped smoking at the conclusion of this period, your doctor may recommend that you take varenicline for an additional 12 weeks. This could help prevent you from relapsing and resuming smoking.

If you have not ceased smoking by the conclusion of the 12 weeks, consult your doctor. Your doctor can assist you in comprehending why you were not able to quit smoking and develop a plan to attempt to quit again.

Side Effects

Some side effects may occur that usually do not need medical attention:

  • abnormal dreams
  • absence of menstruation
  • change in taste
  • diarrhea
  • difficulty having a bowel movement
  • difficulty in moving
  • excess air or gas in the stomach or bowels
  • joint pain or swelling
  • lack or loss of strength
  • loss of taste
  • muscle stiffness
  • painful menstruation
  • passing gas
  • toothache
  • trouble sleeping

Inform your healthcare provider immediately if you experience any serious side effects:

  • swelling of the face, throat, tongue, lips, gums, eyes, neck, hands, arms, feet, ankles, or lower legs
  • hoarseness
  • difficulty swallowing or breathing
  • rash
  • swollen, red, peeling, or blistering skin
  • blisters in the mouth
  • pain, squeezing, or pressure in the chest
  • pain or discomfort in one or both arms, back, neck, jaw, or stomach
  • shortness of breath
  • sweating
  • nausea, vomiting, or lightheadedness with chest pain
  • slow or difficult speech
  • sudden weakness or numbness of an arm or leg, especially on one side of the body
  • calf pain while walking
  • seizures
  • sleepwalking


Prior to initiating varenicline therapy, inform your healthcare provider or pharmacist about any known hypersensitivities to the drug or other allergens. The formulation may contain inert ingredients that could lead to hypersensitivity reactions or other complications.

Before commencing this medication, share your medical history, especially if you have a history of renal impairment, psychiatric disorders, cardiovascular diseases, or seizure disorders.

This drug has the potential to cause dizziness, somnolence, loss of consciousness, or difficulties in concentration. Concomitant use of alcohol or marijuana may exacerbate these effects. Refrain from driving, operating machinery, or performing tasks that require alertness until you feel it is safe to do so.

This medication may also increase your sensitivity to alcohol. Limit alcohol intake and monitor how it affects you while using this drug.

During pregnancy, this medication should only be used when the benefits outweigh the risks, and after a detailed discussion with your healthcare provider.

The transfer of this medication into breast milk is unknown. Consult your healthcare provider before breast-feeding.

Form and Strength

Chantix is available in the following forms and strengths:

  • Chantix tablet:

    • 0.5mg


What does Chantix do to your body?

Chantix blocks nicotine from triggering the release of dopamine.

Does Chantix work immediately?

It takes at least one week to work, and for some people even longer.



Additional information

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Can Drug Store has provided information from third parties intended to increase awareness and does not contain all the information about Chantix (Varenicline). Talk to your doctor or a qualified medical practitioner for medical attention, advice, or if you have any concerns about Chantix (Varenicline).