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Mesalamine, also known as 5-aminosalicylic acid (5-ASA), is an anti-inflammatory drug used to treat inflammation of the rectum, mild to moderate ulcerative colitis and inflammation of the lower colon. Chemically, it is 5-amino-2-hydroxybenzoic acid. The empirical formula is C 7 H 7 NO 3 and its molecular weight is 153.14.
It is sold in the U.S. under the names:
- CANASA: Rectal suppository with 500 mfg of mesalamine in a base of Hard Fat NF.
- ROWASA: Rectal suppository & suspension enema.
- PENTASA: Suspension enema.
- ASACOL: Suspension enema & 400mg tablets
Known side effects
- Cramping
- Sudden severe stomach pain
- Bloody diarrhea
- Fever
- Severe headache
- Rash
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