-azathioprine
-mercaptopurine, 6-MP
-NSAIDs, medicines for pain and inflammation, like ibuprofen or naproxen

They need to know if you have any of these conditions:

-history of a blockage in your bowel or stomach
-kidney disease
-liver disease
-pyloric stenosis
-an unusual or allergic reaction to mesalamine, aspirin, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Visit your health care professional for regular checks on your progress. Tell your health care professional if your symptoms do not start to get better or if they get worse. You may need blood work done while taking this medicine.
Do not change the brand of this medicine that you are taking without talking to your doctor or health care professional. All brands do not have the same dose.
This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and sunscreen. Do not use sun lamps or tanning beds/booths.
The tablet shell for some brands of this medicine may appear in the stool. If this happens frequently, you should contact your doctor or health care professional.
Ask how many glasses of fluid you need to drink a day. You must not get dehydrated.

Keep out of the reach of children.
Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Throw away any unused medicine after the expiration date.