<unk> , also known as<unk>  or 5-aminosalicylic acid <unk> , is a medication used to treat inflammatory bowel disease, including ulcerative colitis and Crohn's disease. It is generally used for mildly to moderately severe disease. It is taken by mouth or rectally. The formulations which are taken by mouth appear to be similarly effective. Common side effects include headache, nausea, abdominal pain, and fever. Serious side effects may include pericarditis, liver problems, and kidney problems. Use in pregnancy and breastfeeding appears safe. In people with a sulfa allergy certain formulations may result in problems.<unk>  is an aminosalicylate and anti-inflammatory. It works by direct contact with the intestines.<unk>  was approved for medical use in the United States in 1987. It is on the World Health Organization's List of Essential Medicines. It is available as a generic medication and sold under many brand names worldwide. In 2017, it was the 246th most commonly prescribed medication in the United States, with more than one million prescriptions.
Mesalazine
Mesoridazine
Sulfasalazine
Salicylic acid
Aminophenazone
Azathioprine
Sulfinpyrazone
Mycophenolic acid