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You are here : 3-RX.com > Drugs & Medications > Quick Drug Information (DrugNotes) > Olsalazine (Oral)

Olsalazine (By Mouth)

Olsalazine (ole-SAL-a-zeen)

Treats ulcerative colitis (bowel disease) and keeps colitis from recurring.

Brand Name(s):

There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

You should not use this medicine if you have had an allergic reaction to olsalazine, mesalamine, or aspirin.

How to Use This Medicine:


  • Your doctor will tell you how much to take and how often.
  • Take olsalazine with food.
  • Take this medicine for as long as your has told you to, even if your symptoms are gone after a few days.

If a dose is missed:

  • Take the medicine as soon as you remember that you missed a dose.
  • If it is almost time for your next dose, skip the missed dose and take your medicine at your usual time.
  • You should not use two doses at the same time.
How to Store and Dispose of This Medicine:

  • Store your medicine at room temperature in a closed container. Keep away from heat, moisture, and direct light.
  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.
  • Keep all medicine out of the reach of children.
Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

Warnings While Using This Medicine:

  • Check with your doctor before taking olsalazine if you have liver or kidney disease or asthma.
  • If you are pregnant or breastfeeding, talk to your doctor before taking this medicine.
Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

  • Skin rash, hives, itching, swelling in the face or mouth
  • Trouble breathing or swallowing
  • Unexplained fever, sore throat, unusual tiredness
  • Bloody diarrhea

If you notice these less serious side effects, talk with your doctor:

  • Mild diarrhea, loose stools
  • Loss of appetite, nausea, upset stomach
  • Dizziness
If you notice other side effects that you think are caused by this medicine, tell your doctor.

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