The free mesalazine generated is considered safe in two lists. Acetyl salicylic acid is an inducer of CYP 2C19.

(To be edited, initial data ST OCT 04) Used in ulcerating colitis, 675 g/d perorally. Balsalazide is mesalazine (5-amino salicylic acid; 5-ASA) bound to a carrier molecule (4-aminobenzoyl-beta-alanine; 4-ABA) by an azo binding. In colon the aniinflammatory mesalazine is liberated via bacterial azo-reduction. About 25% of the dose is absorbed after N-acetylation in the colon mucosa and the liver. mesalazine: South African list: use. EPI-list: use