Data pulled from the FDA’s Adverse Event Reporting System (AERS) between October and December of 2008 suggested that Chantix may be linked to the side effects. The FDA will continue to monitor Chantix for an unspecified length of time until it determines what, if any, regulatory action is needed.

The FDA does not fully test prescription drugs for safety before allowing them to enter into the market. Why? It’s a matter of logistics more than anything. Typically, FDA studies are designed to measure a drug’s effectiveness using thousands of patients who willingly participate in pre-market clinical trials. These patients obviously represent a very small slice of U.S. population. The FDA also relies on studies conducted by the pharmaceutical companies themselves to determine how effective test drugs are. If new drugs that have passed tests for efficacy appear to be reasonably safe, then FDA researchers give them the green light.

The FDA, incidentally, reviewed Chantix in six months rather than the regular review time of 10 months.

The millions of people in the U.S. and around the world who started taking Chantix when it debuted on the world market in May 2006 became patients in the world’s first mass clinical trial. Most people assume that the FDA seal of approval means that the drug will be perfectly safe, but the truth is that most of a drug’s risks are not known until it is prescribed to millions of consumers.

The first reports of adverse events linked to Chantix emerged just months after the drug was released to the public. On February 1, 2008, the FDA issued a statement saying “it appears increasingly likely that there is an association between Chantix and serious neuropsychiatric symptoms.”

By May 2008, Chantix was linked to more than 3,000 reports of serious side effects. By November of the same year, data from the FDA’s Adverse Event Reporting System showed that more reported serious injuries resulted from Chantix than any other prescription drug.

SOURCE: Chantix Recall › FDA monitoring Chantix for serious risks, new safety concerns

Thomas J. Moore, an independent researcher who analyzed the safety of Chantix for the FDA, told the Associated Press that he was particularly concerned about the non-psychiatric side effects Chantix has on some users. These effects include vision problems, disturbances of heart rhythm, seizures, skin reactions, aggression, and loss of consciousness, among others. In themselves, some of these side effects aren’t deadly. However, when they occur within the context of driving or operating heavy equipment, they may be very harmful, if not fatal.

A study of “adverse events” reports conducted by the Institute for Safe Medication Practices contained the following warning:

“We have immediate safety concerns about the use of [Chantix] among persons operating aircraft, trains, buses and other vehicles, or in other settings where a lapse in alertness or motor control could lead to massive, serious injury.”

In May, the Federal Aviation Administration (FAA) banned pilots and air traffic controllers from using Chantix. In August, the Federal Motor Carrier Safety Administration prohibited the use of Chantix without naming the drug specifically.

Late last year, Chantix claimed first place on a list of drugs with the most reported side-effect related problems. Traffic accidents ranked second in Chantix-related injuries, with 28 accidents directly attributed to use of the drug. Loss of consciousness, dizziness, confusion, and muscle spasms were the causes cited.

It’s important to keep these warnings in mind if you use Chantix and drive. Stay focused and alert; if you feel confused or dizzy, pull over immediately because the safety of you, your passengers, and everyone around you may be in jeopardy.

SOURCE: Chantix Recall › Chantix played role in traffic accidents

Now the FDA is paying closer attention to the potential psychiatric effects of non-psychiatric drugs. Anti-seizure medications, asthma drugs, and Chantix are some of the drugs now under watch for adverse psychiatric effects that they may have on the brain. This begs the question: Doesn’t every drug have the potential to affect the brain? Don’t medicines taken orally or by injection work by entering the bloodstream, which then delivers the drug to the target (in addition to the liver, kidneys, brain, etc.)?

According to an AP article, “Several independent experts say the safety alarms point to a gap in the FDA’s knowledge of how drugs affect the brain.” The article goes on to posit that “even if medications are intended for physical conditions, some drugs can have unforeseen consequences if they are able to enter the brain.”

I’m not a pharmacist or a physician, yet it still seems very elementary to me. First, don’t all drugs enter to the brain via the blood to some degree? And shouldn’t this little bit of knowledge be enough to prevent such gross oversights? The more one reads about the FDA, the more one realizes how much he has assumed about the scope of the agency’s knowledge and its effectiveness.

Until the FDA establishes an effective method for accurately quantifying rarer side effects such as depression and suicide, it is seeking a way of warning patients without alarming them or scaring them away from drugs that will likely help them. “Debunking false notions of risk is just as important to the public health as knowing about risks that exist” Kelly Postner, a researcher at Columbia University, who is working to develop a psychiatric screening system for people receiving trial drugs, told the AP.

Perhaps in the future we can expect a warning on all medications akin to the blanket warnings about peanuts and tree nuts found on food labels. The risks may be small for the vast majority of people, but no warnings can be exaggerated for the rare exceptions whose lives have been hurt or destroyed.

SOURCE: Chantix Recall › FDA broadens investigation of drugs and suicide