CANASA® (Mesalamine, USP) Rectal Suppositories 500 mg and 1000 mg
DESCRIPTION
The active ingredient in CANASA® 500 mg and 1000 mg suppositories is mesalamine, also known as mesalazine or 5-aminosalicylic acid (5-ASA). Chemically, mesalamine is 5-amino-2-hydroxybenzoic acid, and is classified as an anti-inflammatory drug.
The empirical formula is C7H7NO3, representing a molecular weight of 153.14. The structural formula is:

Each CANASA®rectal suppository contains 500 mg or 1000 mg of mesalamine (USP) in a base of Hard Fat NF.
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