Only
about one-third of those buying these medications -- such as Nexium, Prevacid
and Prilosec -- over-the-counter used them properly compared to just under half
of those who were prescribed the drugs by their primary care doctor. Those who
were given a prescription by a gastroenterologist were most likely to use the
drugs as they're supposed to be used, with seven out of 10 taking the drugs
properly, according to the study.
These
drugs are activated once in the body, said the study's senior author, Dr. M.
Michael Wolfe, a gastroenterologist and chair of the department of medicine at
MetroHealth System. "In order to activate the medicine, you must eat. For
that reason, you take it before breakfast. If you don't take the drug
correctly, you don't do as well," Wolfe said.
Despite
labels advising users to take the drugs before breakfast, people aren't
following those directions, he said. Those who aren't taking the medicines
properly "are wasting money, they're not feeling well and they aren't
getting symptom relief," Wolfe added.
The
study was published in the June issue of The American Journal of
Gastroenterology.
Heartburn
is a painful, burning feeling just below the breastbone, experienced at least
once a month by about 44 percent of U.S. adults. About 7 percent have heartburn
daily. Frequent heartburn may indicate a condition called gastroesophageal
reflux disease, or GERD. Food and acid from the stomach backs up, or refluxes,
into the esophagus. Reflux can damage the esophagus and cause serious issues
over time.
Direct
costs related to GERD, including acid-reducing medicines, top $10 billion each
year in the United States, according to background information in the study.
The
medications looked at in this study are a class of drugs known as proton pump
inhibitors. They work by reducing the amount of stomach acid produced,
according to the U.S. National Library of Medicine. Unlike antacids, such as
Tums or Rolaids, proton pump inhibitors don't provide immediate relief of
heartburn symptoms. It takes about 7 days of continuous use for the drugs to
reach their maximum acid-suppressing potential, the study noted.
Wolfe
and his colleagues surveyed 610 patients who used heartburn medicine for their
GERD. Of that group, 190 got a prescription heartburn medicine from a
gastroenterologist and 223 received a prescription from their primary care
doctor. The other 197 bought over-the-counter heartburn medicines.
Those
prescribed the medicines by their gastroenterologist did best, Wolfe noted,
with 71 percent taking the medicines correctly. Only 47 percent of those who
got prescriptions from their primary care doctors took them correctly. And just
39 percent of those who bought them over-the-counter used them right, the
investigators found.
In
a previous study, only one-third of primary care doctors told patients to take
the medicines before meals, but nearly all gastroenterologists did, according
to the report.
In
his study, Wolfe found, the severity and frequency of symptoms were better in
those who were prescribed the drug by a gastroenterologist compared to a primary
care doctor.
"If
you have frequent heartburn, you have a disease, GERD," Wolfe said.
"And you really should see a physician and not treat yourself," he
explained.
Dr.
John Lipham is director of the Digestive Health Center at Keck Medicine of the
University of Southern California. Lipham reviewed the findings but was not
involved in the study.
"It's
something we have known since these medications came out, that they work best
if you take them 30 minutes or so before a meal," said Lipham.
However,
he pointed out that the new study puts some data behind what experts knew from
experience.
Lipham
said the new study is the first, to his knowledge, to show a difference in
taking the medicine correctly depending on who prescribed it.
Wolfe
and Lipham both find that patients often think of the proton pump inhibitors in
the same way as antacids, meant to be taken when heartburn strikes.
"But
these [proton pump inhibitor] medicines don't work that way," Lipham said.
"They need to be stimulated by acid and need to build up in your system.
You have to take them at the correct time each day and you also need to take
them every day to get the maximum effectiveness of the medications."
As
to why doctors aren't all telling their patients how to use these drugs, Wolfe
speculated that primary care doctors may be too busy and don't have the time to
read all of the drug literature.
The
bottom line is "it boils down to education," said Wolfe. Physicians
and consumers need to take the time to learn about the drugs.
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