Using Pentasa to treat Inflammtory Bowel Disease

About Pentasa

Pentasa is a prescription medicine used to treat mild to moderate Inflammatory Bowel Disease (IBD for short).  Two major types are: Crohn's Disease and Ulcerative Colitis.

It has been available in New Zealand since 1992, so it has been treating New Zealanders with mild to moderate Inflammatory Bowel Disease for over 20 years.

Pentasa contains the active ingredient mesalazine (also known as 5-aminosalicylic acid or 5-ASA).

Your Doctor may have prescribed Pentasa for you. 

To get the optimal benefit from your medicine it is important that you take it in accordance with your Doctor’s instructions.  This means the right dose (quantity), at the frequency and for the length of time prescribed by your Doctor. 

All medicines have risks and benefits. Your Doctor will weigh up the risks and benefits before prescribing Pentasa for you.

If you have any concerns about using this medicine, ask your Doctor or Pharmacist.

Learn about your medicine

For further information about this medicine please refer to the Consumer Medicine Information (CMI).  The CMI contains information about what your medicine is, what it treats and how you should take it.  It also provides information on possible side effects and what you should do if you experience any of them.  Your Doctor and Pharmacist can provide the CMI to you or you can access it on the Medsafe website,

Pentasa is available in the following presentations:


Pentasa Tablets 500mg, Pentasa Enema 1g/100 ml, Pentasa Suppository 1g, Pentasa Granules (Sachets) 1g.

The active ingredient in Pentasa® is mesalazine

This medicine is used to treat Crohn’s Disease and Ulcerative Colitis.

Pentasa has risks and benefits. Further information on the risks and benefits of this medicine can be found HERE, and in the Consumer Medicines Information (CMI). Please refer to or your Pharmacist for a copy of the CMI.

Consult your Doctor to see if this medicine is right for you. Use strictly as directed. If symptoms continue or you have side effects, see your Doctor, Pharmacist or Healthcare Professional.

Pentasa Tablets 500mg, Suppositories 1g, Enemas 1g/100 ml, and Granules (Sachets) 1g are funded prescription medicines. Doctor's charges will apply.

Pharmaco (NZ) Ltd, Auckland