Mesalamine Oral [ Asacol, Pentasa, Mesasal, Salofalk ]
Mesalamine is a derivative of salicylic acid and is thought to be the active
component of sulfasalazine (Azulfidine), a combination of a sulfa drug and
salicylic acid. Mesalamine works as an antiinflammatory agent in treating
ulcerative colitis and Crohn's disease. Its benefit is believed to be due to
a topical effect on the inflamed bowel. Following rectal administration of
mesalamine (by enema or suppository), only 15% of a dose is absorbed.
Following oral administration, 28% of a dose is absorbed. Mesalamine was
approved by the FDA in December 1987
Mesalamine is used for the treatment of mild to moderately severe colitis.
The suppositories are limited to use in proctitis, the enemas to distal colitis
(colitis involving only the part of the colon close to the rectum) or
proctitis. Proctitis is inflammation of the lining of the rectum.
There are no adequate studies of mesalamine in pregnant women; however,
studies in animals suggest no important effects on the fetus. Therefore,
mesalamine may be used in pregnancy if the physician feels that it is
necessary. It also should be noted that there is no effect of mesalamine on
sperm count as there is with sulfasalazine (Azulfidine).
Mesalamine is excreted in small amounts in breast milk. No side effects have
been reported in nursing infants whose mothers have taken mesalamine. Since
the possibility of side effects always exists, physicians must weigh the
potential risks of mesalamine on the infant against the benefits for the
mother.
Mesalamine is usually well-tolerated. Adverse effects that have been reported
in large studies include: headache, abdominal pain, diarrhea, nausea, and
dizziness. None of these effects, however, were reported more frequently
with mesalamine than with placebo. Infrequently, patients may be intolerant
of mesalamine, experiencing cramping, abdominal pain, bloody diarrhea, and
sometimes fever or rash. In such cases, the medication is stopped. Mesalamine
enemas contain sulfites and should be avoided in persons who are sensitive
to sulfites.
Common Side Effects:
Check with your doctor if any of the following side effects continue or are
bothersome:
abdominal or stomach cramps or pain (mild)
diarrhea (mild)
dizziness; headache (mild)
runny or stuffy nose or sneezing
Less frequent or rare:
Check with your doctor if any of the following side effects continue or are
bothersome:
acne
back or joint pain
gas or flatulence
indigestion
loss of appetite
loss of hair
Always Notify Doctor:
Less common
abdominal or stomach cramps or pain (severe)
bloody diarrhea
fever
headache (severe)
skin rash and itching
Rare
anxiety
back or stomach pain (severe)
blue or pale skin
chest pain, possibly moving to the left arm, neck, or shoulder
chills
fast heartbeat
nausea or vomiting
shortness of breath
swelling of the stomach
unusual tiredness or weakness
yellow eyes or skin
Symptoms of an Overdose:
Confusion; diarrhea (severe or continuing)
dizziness or lightheadedness
drowsiness (severe)
fast or deep breathing
headache (severe or continuing)
earing loss or ringing or buzzing in ears (continuing)
nausea or vomiting (continuing)
Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor. This information is meant only as a guideline - always consult a physician or pharmacist for complete information about prescription medications.
On behalf of learning, and use as teaching tools for those of us who need to
know about our disease, I have tried to supply you with as much information as
I could find on all of the drugs, treatments and disorders associated with
Inflammatory Bowel Diseases. I have tried to blend all facts supported by research
and also from personal experiences of other IBD sufferers into one readable webpage, and any and all information presented here is not entirely
from one source. Most information contained within these pages is found in the public domain.
At times you may find information used from another site, and as with all copyrighted materials you may find on these pages, I claim fair use under sections 107 through 118 of the Copyright Act (title 17, U.S. Code). Click here for more info
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