FDA Panel Considers First Pill for Ragweed Allergy01/28/14
TUESDAY, Jan. 28, 2014 (HealthDay News) -- There may be good
news coming in the form of a pill for the millions of Americans who
suffer from ragweed allergy.
On Tuesday, the U.S. Food and Drug Administration's Allergenic
Products Advisory Committee will consider whether to recommend
approval of the first pill to prevent this annual scourge.
Ragwitek, the brainchild of Merck & Co., is made of ragweed
pollen and helps the body become immune to it. Patients begin
taking the pill, which is placed under the tongue, 12 weeks before
the ragweed pollen season begins and continue through the season's
end. In the United States, the ragweed season usually starts in
September and runs through the fall.
People suffering from ragweed allergy suffer stuffy noses with
sneezing, itching and congestion, as well as itchy and watery eyes.
These annoying symptoms can affect quality of sleep and hamper
daily activities. Plus, these problems often precede the
development of asthma.
Current treatments include a variety of nasal sprays, as well as
shots specifically tailored to tame all of a patient's
Dr. Len Horovitz, a pulmonary specialist at Lenox Hill Hospital
in New York City, has his doubts about the power of this new pill.
He said people who are allergic to ragweed often are allergic to
other plants as well.
"I am skeptical that the pill will work on these other plant allergies," he said.
Another expert, however, said he sees this as a first step in
making this kind of allergy treatment a real possibility.
"The whole idea of [under-the-tongue] immunotherapy has been in the background for some time," said William Blouin, an allergy and immunology nurse practitioner at Miami Children's Hospital. "Until this point, immunotherapy has to be done as a series of injections."
A pill would make life simpler, he said, because it wouldn't
require the inconvenience of weekly doctor visits or the pain of
injections. Blouin said the new pill is intended only for ragweed,
so if a person was allergic to other plants it would mean taking a
separate pill for each one.
"I understand that there are one or two similar pills in the pipeline," he said.
Last December, the same FDA advisory committee voted unanimously
to recommend approval of a similar kind of pill for grass pollen
allergies, known as Grastek. Merck is developing that pill in
partnership with a European company.
"Conceptually, it's very desirable, especially for children," Blouin said. Although the pill has been tested only on adults, he said he expects it will be tested on teens and young children at some point.
During Tuesday's committee meeting, the panel will be asked
whether the data supports the safety and effectiveness of Ragwitek
for people aged 18 and older, and whether more studies are needed
before making a recommendation to approve the product.
Merck's five trials showed both improvement in symptoms and in
quality of life among those who were taking Ragwitek, the company
According to FDA documents, some patients experienced lip
swelling, abdominal pain and diarrhea while taking the pill. Other
side effects included swollen tongue, difficulty breathing and
American College of Allergy, Asthma and
Immunologyfor more on ragweed allergy.
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