Chantix is the brand name for the drug varenicline and is taken in pill form. Chantix is produced by Pfizer Labs. It is a non-nicotine medication for helping people who are trying to stop smoking and works by suppressing the urge to smoke. Chantix is approved only for people who are 18 and older. The drug works by blocking nicotine from reaching the nicotine receptors in the brain and by causing these receptors to release a smaller amount of dopamine compared the amount of dopamine released by nicotine. However, there are side effects that can occur in patients who are taking Chantix.
Emotions
Some people who take Chantix have experienced moodiness, agitation, hostility, depression and suicidal thoughts and actions, according to Pfizer. These can result in changes in behavior that are not typical for an individual. When these symptoms appear, a health care provider should be contacted, and Chantix should be discontinued.
Common Side Effects
The most common side effects of taking Chantix are nausea, vomiting, gas and constipation. Another side effect that is considered one of the most common is having sleep problems, according to the Mayo Clinic. These sleep problems include having vivid, unusual or strange dreams and having trouble sleeping.
Side Effects and Driving
The Food and Drug Administration has advised patients to use caution when driving or using heavy machinery until they understand how Chantix affects them individually. This is a safety concern because of the possible side effects that patients experience, which include feeling sleepy, having trouble concentrating and feeling dizzy.
Allergic Reactions
Some people have allergic reactions to Chantix. These allergic reactions can be life-threatening. The symptoms of having an allergic reaction include swelling of the mouth, throat and face. If these symptoms occur, stop taking Chantix and get medical attention immediately
Skin Reactions
Some people can have skin reactions to taking Chantix. These reactions can be life-threatening, according to Pfizer. The symptoms of a skin reaction include redness, rash, swelling and peeling of the skin. In the event of a rash with peeling of the skin, or blisters in the mouth, see your doctor immediately and stop taking Chantix.
Other Adverse Side Effects
When these side effects occur, stop taking Chantix and contact your health care provider. These side effects include hallucinations, paranoia, an extreme increase in activity and talking, feelings of confusion, abnormal thoughts or sensations, anxiety or panic attacks, acting aggressive, being angry or violent, having a new depression or a worse depression, having thoughts about suicide or dying, or trying to commit suicide.
Nicotine Withdrawal Symptoms
It's important to know that there are symptoms from stopping smoking even if Chantix is not being taken. These symptoms include a depressed mood, trouble sleeping, anxiety, anger, frustration, a decreased heart rate, restlessness, difficulty with concentrating and an increased appetite or weight gain.
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