Do not use Pentasa (mesalamine)
You should not use Pentasa if you are allergic to mesalamine, aspirin, sulfasalazine, or salicylates (such as Nuprin Backache Caplet, Kaopectate, KneeRelief, Pamprin Cramp Formula, Pepto-Bismol, Tricosal, Trilisate, and others).
You should not give this drug to a child without the medical advice of a doctor.
Dose adjustment or special precautions may be required
Before taking this medication, to ensure it is safe for you, tell your doctor if you have a stomach condition called pyloric stenosis, heart disease, kidney disease, liver disease, or a history of blockages in your digestive tract.
Risks
It has not been established if this medication will harm an unborn child if taken by a pregnant mother. Tell your doctor if you are pregnant before using this medication.
This medication passes into breast milk and may harm a nursing infant. You should avoid breast feeding while using this product unless your doctor believes the benefits outweigh the risks.