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Bextra
News Alert: Pfizer Alerts arthritis drug Patients
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Pfizer Withdraws Bextra from
Market
Bextra News Alerts and Lawyer Updates
April 7, 2005 - Citing concerns regarding the risk
of heart attacks, strokes, "life threatening" skin reactions, and
other cardiovascular events the FDA requested that drugmaker
Pfizer withdraw Bextra from U.S. and European pharmaceutical
markets.
"Today's actions protect and advance the health of the millions of
Americans who rely on these drugs every day," said Dr. Steven K.
Galson, acting director of FDA's Center for Drug Evaluation and
Research.
The risks posed by Bextra outweigh its benefits, the FDA said.
"For now, patients should stop taking Bextra and contact their
physicians about appropriate treatment options," Pfizer said in a
statement Thursday.
If you or a loved one have suffered
from the dangerous side effects of Bextra, you should consider
receiving a
free legal evaluation from an experienced Bextra lawyer.
------------------------------------------------------------------------------------------------------------December
17, 2004, Reuters - Doctors writing in a prominent medical journal
on Friday recommended that physicians stop prescribing Pfizer
Inc.'s Bextra painkiller, just as a large study found the drug
maker's sister drug, Celebrex, doubled risk of heart attacks.
Pfizer Inc. on Friday (Oct. 15, 2004) said two small clinical
trials showed heart bypass surgery patients taking Bextra, an
anti-inflammatory in the same class as the recently withdrawn drug
Vioxx, had a higher risk of stroke and heart attack.
In light of the increased focus on alternative treatment options
for people with arthritis, Pfizer plans to conduct further studies
to confirm the long-term cardiovascular safety profile of its
anti-inflammatory drug Bextra.
Bextra is approved to treat pain from arthritis and, like Merck &
Co.'s Vioxx, is a COX-2 inhibitor. A recent trial showed Vioxx
doubled the risk of heart attack and stroke in arthritis patients
who took the drug for more than 18 months.
The Vioxx withdrawal has cast a cloud over the entire class of
COX-2 inhibitors, which includes Bextra, Celebrex and an
experimental drug from Novartis AG called Prexige.
Recent evidence suggests that Bextra increased risk of stroke and
heart attack when it was given to very high-risk patients who had
undergone coronary bypass surgery.
As it relates to arthritis, Bextra has only been studied in these
patients for up to a year.
Doctors said it is too early to quantify the potential risk of
Bextra or of Pfizer's other COX-2 inhibitor Celebrex as neither
have tested for long enough. Pfizer said it is conducting longer
term trials in arthritis patients.
Pfizer's research
studied use of Dynastat and Bextra in patients who had just had
coronary artery bypass graft.
In these studies, there was an increase
in cardiovascular events.
The first study involved 450 patients,
300 of which received Bextra and Dynastat. All the patients had
the option of giving themselves morphine and opiates and everyone
received low-dose aspirin.
In that trial, there was a trend showing
the Bextra-Dynastat combination was leading to higher adverse
event rates, though it wasn't statistically significant.
So, Pfizer decided to run an additional
larger study to confirm the results.
The second study involved three groups of
500 patients each. The first received a placebo meant to look like
Dynastat, then a sugar pill meant to look like Bextra and then the
standard narcotic pain drugs like morphine. The second group
received an indictable placebo, Bextra and the standard pain
drugs. The third group got both Dynastat, Bextra and the other
drugs.
All groups received their drugs for 10
days following coronary bypass surgery.
In the first group with the two placebos,
3 people suffered severe coronary events, 6 people in the Bextra
group had these events and 11 people in the Bextra and Dynastat
group suffered them.
The coronary bypass trials are ones that Dr. Eric Topol of the
Cleveland Clinic Foundation and an early and outspoken critic of
Vioxx, said he finds concerning as they show a cluster of heart
attacks and strokes.
Pfizer also said it is updating its label on Bextra to strengthen
a warning about a rare but serious skin reaction,
Stevens-Johnson syndrome,
that can occur mainly within the first two weeks of therapy.
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