Chantix side effects ... here are the facts

Chantix side effects is a common concern for many people who are on the search for stop smoking products. The actual ingredient in Chantix is called varenicline. Chantix is the trade name of the drug in the USA manufactured by Pfizer.

It a is prescription based medication. There are a number of documented Chantix side effects. The drug essentially reduces cravings of tobacco and tobacco related products. It also decreases the pleasure derived from these tobacco products.

The white and blue tablets achieves this by short circuiting the ability of nicotine to stimulate the central nervous system.

It is important to note that varenicline which is contained in Chantix has not been tasted in people under 18 years of age and those who are pregnant.

For fear of side effects, it is not recommended for people belonging to these groups including breast feeding mothers. This is because it can be passed through milk to the infant with unknown side effects.

Some common side effects

  • Nausea
  • Headaches
  • Sleep problems (abnormal dreams, trouble sleeping)
  • Constipation
  • Gas
  • Vomiting

Other general side effects that some but not most users can expect

  • Change in taste
  • Abdominal pain
  • Occasional suicidal behavior/thoughts
  • Hostility
  • Agitation
  • Depressed mood
  • Anxiety
  • Panic
  • Abnormal sensations
  • Hallucinations
  • Paranoia
  • Confusion
  • Serious skin reactions - rash, swelling, redness, skin peeling
  • Life threatening allergic reactions - swelling of face, mouth, throat and trouble breathing
  • Caution is required when driving or operating machinery until one knows its effects


As indicated above, Chantix side effects can be life threatening. Please consider the following in light of your own situation;

  • If you have had depression or other mental health problems it might worsen as you take on Chantix
  • If you have previously experienced nicotine withdrawal symptoms with or without Chantix, these might worsen
  • Your doctor might prescribe a lower dose for you if you have kidney problems or if you are on kidney dialysis
  • As noted above Chantix has not been researched in mothers-to-be. If you are pregnant or planning to be pregnant it is best to stop smoking before you get pregnant.
  • Breastfeeding and Chantix have not yet been researched upon. The side effects of Chantix passed to your infant in breast milk is not known.
  • You will also need to give your physician a full account of all medicines you are currently taking.These might include supplements, insulin and asthma medicines.

How Chantix is normally administered

  • You choose a future quitting date
  • You start taking Chantix 7 days before; helping Chantix to build up in your body.
  • You take the pills with a full glass of water after a meal
  • You will be required to keep taking Chantix for for up to 12 weeks

Chantix side effects must be considered with serious care in order to ensure the medication is suitable for you.

quit smoking informationQuitting smoking is admittedly hard yet it can be done. Studies show that following a stop smoking program and using stop smoking aids doubles success rates in most people. If you are deciding on stopping smoking you will require adequate information as well as good tools to help you succeed. Whilst we understand that not all tools are meant for everyone we found this LifeSign QuitKey Smoking Cessation Computer handy. It works like a quit smoking program which alters your smoking routine easing you off cigarettes gradually. Please take your time to check if this is for you.

You may also see other stop smoking products within this site as follows;


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