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Chantix®, the smoking cessation drug marketed by the pharmaceutical leader Pfizer, has been used by more than five million patients since its 2006 launch. Many people who smoke cigarettes, cigars or a pipe would like to stop, and it can be very difficult to do so. Chantix®® (generic name, varenicline) is one of the only two prescription nicotine-dependence products on the U.S. market (the other is Zyban [bupropion]).

The Serious Potential Side Effects of Chantix®
Unfortunately, Chantix® is suspected of having very serious — sometimes life-threatening — side effects, including:

  • severe mood swings
  • depression
  • agitation, aggression
  • nervousness
  • impaired driving skills
  • suicidal ideation (when a person thinks about committing suicide)
  • suicidal behavior

The FDA Requires a Strict Warning
In January 2008, the U.S. Food and Drug Administration (FDA) required a more severe warning on the Chantix® label noting these side effects, which had all been reported among Chantix® users. In 2007, for instance, Chantix® was in the news when a Texas musician was shot after he kicked down his neighbor’s door while on Chantix®. The FDA launched an investigation into claims that Chantix® use was causing aggression and mood disorders.

Since the FDA’s requirement for a strict warning about Chantix® risks, sales of Chantix® dropped by 35%. The sales of Chantix® were initially a huge success for Pfizer, amounting to more than $880 million in worldwide sales in 2007.

Does Chantix® Work?
Chantix® is taken once a day at first, then twice a day, for a total of 12 weeks. The patient is instructed to start taking Chantix® for one week before actually quitting smoking, and to continue the 12-week course whether or not he/she is successful at quitting completely.

Although Pfizer states that “studies show that 44% [of Chantix® users] reached their quitting goal at the end of 12 weeks,” the percentage who were smoke-free a year later ranged from 14% to 23% in clinical trials.

If You’ve Been Harmed by Chantix®
If Chantix® treatment has harmed you or a member of your family, you may be eligible for a legal remedy, including financial compensation. Find out more when you contact a Chantix® plaintiffs’ law firm today.

Chantix News

Lawsuit Claims Chantix was Behind Murder-Suicide

December 13, 2013

An Oregon woman filed a lawsuit alleging that the prescription drug Chantix caused her husband to murder the couple’s son and then commit suicide. The Republic out of Columbus, Indiana reports that Lamae Stout has named dentist Matthew McLaughlin and PeaceHealth Sacred Heart Medical Center’s … Full Story

Latest Round of Chantix Lawsuits Settled

August 20, 2013

Pfizer Inc. recently settled a second round of lawsuits filed against the drug makers’ anti-smoking drug, Chantix, in a Birmingham federal court. The company reached a final settlement for approximately 660 Chantix lawsuits, a group that was filed between 2009 and 2012. The federal suits … Full Story

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