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 Crohns Disease: Medications : Mesalamine Oral [ Asacol, Pentasa, Mesasal, Salofalk ]
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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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