Tylenol and Aspirin Increases Risk of Kidney
Failure
An article in the December 19, 2001 online issue of WebMD reporting on
an article from the December 20, 2001 New England Journal of Medicine
reports that two of
the most common over the counter drugs can have serious effects. The
study was conducted in Sweden by interviewing 1924 subjects half of who
had been recently diagnosed with renal (kidney) failure. In the half
that had the renal failure the usage of Aspirin and Tylenol was 37 percent
and 25 percent, respectively. In the control group, the usage of
Aspirin and Tylenol was considerably lower with the rates only being 19
percent and 12 percent, respectively. These results clearly showed a
higher rate of long-term usage of these drugs in the patients who
eventually suffered renal failure.
Michael Fored, MD, author of the study and a kidney specialist at the
Karolinska Institute in Stockholm, Sweden stated, "What we have seen
is that there is an association between acetaminophen [the generic name
for Tylenol] and aspirin and chronic [kidney] failure. Our results are
consistent with the existence of exacerbating effects of acetaminophen and
aspirin on chronic renal failure."
The WebMD story stated that taking either of the two drugs increased
risk of kidney failure for people with kidney disease. The article further
pointed out that taking just one of the drugs increased this risk 2.5-fold
while taking more of each drug over the course of a lifetime, greatly
increased the risk. Cumulative
(lifetime) risk increased faster with Tylenol than with aspirin. A
lifetime dose of at least 500 grams increased risk of kidney failure
3.3-fold. "This is not that high a dose," Fored says.
"For the usual 500 mg pill that is 1,000 tablets. That is three
tablets a day for a year. It is not that high a dose for a person with
chronic pain."
The very next article published in the same December 20, 2001 issue of
the New England Journal of Medicine reports on a study that shows that
taking ibuprofen (Advil or Motrin) almost totally wipes out any positive
heart effects that taking aspirin was hoping to cause.
In this report by Dr. Muredach Reilly, a University of Pennsylvania
cardiologist who took part in the 30-patient study, he noted that when
patients took a single dose of ibuprofen beforehand, aspirin lost 98
percent of its blood-thinning power. When aspirin was taken first, three
daily doses of ibuprofen sapped aspirin of 90 percent of its benefit.
He concluded, “It would not do you a lot of good to take one medication
only to have another wipe out its effects.”
|