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FDA Approves Celebrex For
Arthritis
FDA has approved Celebrex
(Celecoxib), a new product to treat rheumatoid arthritis and
osteoarthritis.
Celebrex is an NSAID or non-steroidal
anti-inflammatory drug that blocks production of prostaglandins
by inhibiting the enzyme cyclooxygenase-2 (Cox-2). The following
may be used to respond to questions: Arthritis affects millions
of Americans -- more than three million with rheumatoid arthritis,
and 16 million with osteoarthritis, the most common form of arthritis
affecting the elderly. Both cause painful inflammation and joint
deterioration. Unlike other NSAIDS, Celebrex does not inhibit
the enzyme cyclooxygenase-1 or COX-1. Inhibition of COX-1 is
believed to contribute to some of the adverse effects of NSAIDS,
including upper gastrointestinal ulcers. It is therefore hoped
that Celebrex will have safety advantages compared to other NSAID
products. Additional studies and post-marketing experience will
add substantially to the understanding of how the overall risks
and benefits of Celebrex compare with those of other NSAID products.
Celebrex was found to be an effective arthritis treatment in
placebo and active-controlled clinical trials that enrolled 2100
patients with rheumatoid arthritis and 4200 patients with osteoarthritis.
Celebrex Compared to other
NSAID Products
Celebrex was compared to other NSAID products in several of these
clinical trials by using endoscopes (a device to examine organs
of the gastrointestinal tract) to determine the incidence of
stomach and upper intestinal ulcerations following the use of
these products. These studies showed that patients taking Celebrex
had a substantially lower risk of ulcers detected by endoscopy
over the study period of 12 to 24 weeks compared to patients
who took other NSAIDS. However, NSAID products can cause a range
of gastrointestinal problems, and patients with endoscopic ulcers
may often recover without special treatment and without experiencing
any serious symptoms or complications. Therefore, additional
studies in many thousands of patients would be needed to see
whether Celebrex actually causes fewer serious gastrointestinal
complications than other NSAID products. Until such studies are
done, the drug labeling for Celebrex will include the standard
warning for doctors and their patients about the risks associated
with all NSAIDS, including risks of GI ulceration, bleeding and
perforation. The labeling advises patients taking these drugs
to be alert for ulceration and bleeding that can occur with or
without warning. Patients should promptly report signs and symptoms
of gastrointestinal ulceration or bleeding, skin rash, unexplained
weight gain, or swelling to their physicians.
In addition, Celebrex does not
affect platelet aggregation (clumping) an important part of the
blood clotting process. Many other NSAID products can interfere
with this platelet function, which may increase the risk of bleeding
complications in some patients. However, Celebrex does not appear
to be different from other NSAIDS in its effects on the kidneys.
Celebrex
Warnings and Side Effects
Celebrex is manufactured by Searle
of Chicago, Illinois.
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