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Generic: Varenicline tablets

Manufacturer: RSM/Dhadha

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Chantix  a trade name  of  Varenicline is a medicine, used to fight against the addiction of nicotine through smoking. Chantix lessen the urge to smoke and relieve removal symptom. Chantix directly targets at the receptors in the brain and blocks nicotine to reach them. It is advised to take Chantix with a doctor’s prescriptions which can works adverse on the brain if not taken care. It can also have serious skin problem which can lead to life threatening.

Most Importantly, Chantix has a good side-effect profile. Meek to slight nausea is the most frequent common symptom. Sleep disturbance and abnormal dreams are also the side-effects but again these were typically mild.

Even though this medicine seems to be very promising, it is crucial that people don’t expect a magic shot that makes it easy to stop smoking. It appears to reduce cravings and withdrawal symptoms and triples the quit rates, people using it still have to put up with some continual urges to smoke. They should use the normal helpful strategies to quit smoking as well as the medicine.


Chantix is a pharmaceutical drug which classified under the class of anti-depressant agents. This form of Chantix helps to lessen the signs/indications/symptoms of nicotine withdrawal. This drug works on chemicals present in the brain that are associated to nicotine desire.

How does Drug Work?

Chantix modify the level of few chemicals present in the brain (named as neurotransmitters) by restoring the balance of noradrenalin and dopamine in the brain as lack of these neurotransmitters may be involved in the addiction process and may contribute to withdrawal. This gives the impression to ease the withdrawal symptoms that individual get when he stops smoking(symptoms are: Anxiety, feeling of restlessness, severe headaches, feeling of irritability, hunger, difficulty in focusing, or just feeling horrific).

What is the Dosage of Chantix?

These tablets of Chantix should be swallowed as a whole. Crushing and chewing of tablets are not allowed.

Dose of tablets of Chantix: primary dose with one tablet per day for three days (either in morning or in evening).

 This dose may gradually increase to 2 times a day (morning and evening).

Directions for Use: Patient’s instructions for proper use of Chantix along with each of its package.

What are the indications of Chantix?

It is indicated as assistance to smoking cessation treatment. 

What are the Contraindications of Chantix?

Chantix is contraindicated in patients who are having following medical conditions:

  • It is not hand out to patients who are suffering from eating disorders such as Bulimia and Anorexia. (Bulimia- it is a disorder associated with consumption of large amount of food in short time period. Anorexia- it is a disorder associated inappropriate eating habits.)
  • It is contraindicated to those who are sensitive to any one of its ingredients.
  • It is contraindicated in those patients having tremor problems.


What are the Side Effects of Chantix? 

Ask your doctor/pharmacist if you exhibit some of these major side effects:

  • Swollen facial parts such as Lips, Tongue or throat.
  •  Severe Pain in abdomen.
  • Having problem in passing stool.
  • Dryness of mouth.
  • Gradually gain in body weight.
  • State of confusion.
  • Anxiety.
  • Severe headaches.

Discontinue the medication if following conditions appear:

  • Severe fits.
  •  Skin reactions such as blistering.
  • Not breathing properly.
  • Vomiting.
  • Cirrhosis (it is diseased condition of liver which is characterized by following indications such as: jaundice, fatigue, loss of appetite.)

Listed side effects of Chantix are not complete. 

What are the Drug Interactions of Chantix? 

Medications are known to interact with Chantix are:

(Below Mentioned list is not complete. Consult your doctor before taking Chantix)

  • Carbamazepine.
  • Phenobarbital.
  • Phenytoin.
  • Ritonavir.
  • Lopinavir.
  • Efavirenz.
  • Levodopa.
  • Amantadine.

How should you store Chantix?

Storage conditions of Chantix are:


  • Stay children away from Chantix.
  • Guard from light and moisture.
  • Storage temperature is not above 25°C (77°F)
  • Stop taking Chantix after its expiry date shown as “EXP” on the label or box.



REMEMBER: This medicine has been prescribed for you by your doctor. DO NOT give this medicine to anyone without prescription.

What are points you should kept in mind before taking Chantix?

If you are taking Chantix, keep few points in mind:

  • If you are pregnant.
  • If you are breast feeding mother.
  • If you have any injury to head or spinal cord.
  • If you are having any medicine without prescription for weight reduction.
  • If you are having any drug that contains methylene blue.


In some Cases, this medicament possibly will not be appropriate and your doctor/pharmacist may wish to give you a Different medicine. Make clear by all means that your doctor knows about your medical history.

What should be done in case of Missed Dose?

If it is closer the time of the next dose, don’t take the missed dose and resume the usual dosing schedule. Don’t double your dose.

What should be done in case of Over Dose?

Overdosed person with Chantix, make a call to poison control center or crisis room quickly. 

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