Permax Study links
to Valve Damage
A study by Italian researchers found that
approximately 1 in 4 Parkinson's patients taking Permax had moderate to severe heart valve
related damage.
In a German study, doctors established that Permax users were five to seven times more likely to have leaky heart valves than those on other types of Parkinson's medications. Both studies can be found in the New England Journal of Medicine.
Dr. Renzo Zanettini and others at the Instituti Clinici di Perfezionamento in Milan obtained echocardiogram images of the hearts of 155 patients taking various Parkinson's medications and a comparison group of 90 healthy people.
Moderate to severe valve problems were seen in 29% those on
Permax.
In the German study, Dr. Rene Schade and associates in Berlin and in Montreal used records from over 11,400 Parkinson's patients in the United Kingdom. The rate of newly diagnosed leaky valves was increased among
Permax users.
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Pfizer Clarifies Permax Heart valve claims
Permax (generic: cabergoline) manufactured
by Pfizer Inc., gained approval by the FDA
on December 23, 1996. Permax is used for
Parkinson’s in other countries but is
approved in this country only for a hormonal
disorder, hyperprolactinemia. People with
Parkinson’s often take doses 20 to 40 times
higher than patients with hormone
disorders.who take Dositnex.
Dr. Michael Berelowitz, senior vice
president of Pfizer, which makes Permax,
said the company had received fewer than 100
reports of valve problems from the drug,
mostly in people with Parkinson’s.
The two new reports involve only
Parkinson’s. The results should not be
applied to patients who take Permax for
the hormone disorder, because they take far
smaller doses of the drug than do patients
with Parkinson’s, said Dr. David L.
Kleinberg, a professor of medicine and
director of the neuroendocrine unit at New
York University’s medical school. Many
doctors consider it the best drug for the
problem.
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are taking Permax and have Parkinson's
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