Who can and cannot take sulfasalazine

Most adults and children aged 2 years or over can take sulfasalazine.

Sulfasalazine is not suitable for some people. To make sure it's safe for you, tell your doctor if you:

• have ever had an allergic reaction to sulfasalazine or any other sulfonamides, aspirin, or any other salicylates such as methyl salicylate or choline salicylate
• have ever had an allergic reaction to any other medicine
• have a rare blood condition called porphyria
• have any problems with your kidneys or liver
• are pregnant, trying to get pregnant or breastfeeding
• have a genetic condition called glucose-6-dehydrogenase deficiency
• have ever had asthma
• often get infections or have a condition that makes you more likely to get infections