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Balsalazide


Balsalazide
Systematic (IUPAC) name
5-[4-(2-carboxyethylcarbamoyl)phenyl]diazenyl-2-hydroxy-benzoic acid
Identifiers
CAS number	80573-04-2
ATC code	A07EC04
PubChem	5362070
DrugBank	APRD00141
Chemical data
Formula	C₁₇H₁₅N₃O₆
Mol. mass	357.318 g/mol
Pharmacokinetic data
Bioavailability	<1%
Protein binding	≥99%
Metabolism	?
Half life	12hr
Excretion	?
Therapeutic considerations
Pregnancy cat.	B(US)
Legal status	POM [UK]
Routes	?

Balsalazide is an anti-inflammatory drug used in the treatment of Inflammatory Bowel Disease. It is sold under the name "Colazal" in the US and "Colazide" in the UK.

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The chemical name is (E)-5-[[-4-(2-carboxyethyl) aminocarbonyl] phenyl]azo] -2-hydroxybenzoic acid. It is usually administered as the disodium salt.

Balsalazide releases mesalazine, also known as 5-aminosalicylic acid, or 5-ASA, in the large intestine. Its advantage over that drug in the treatment of Ulcerative colitis is believed to be the delivery of the active agent past the small intestine to the large intestine, the active site of ulcerative colitis.

v • d • e Antidiarrheals, intestinal anti-inflammatory/anti-infective agents (A07)
Intestinal anti-infectives	Antibiotics (Neomycin, Nystatin, Natamycin, Streptomycin, Polymyxin B, Paromomycin, Amphotericin B, Kanamycin, Vancomycin, Colistin, Rifaximin) Sulfonamides (Phthalylsulfathiazole, Sulfaguanidine, Succinylsulfathiazole) other (Miconazole, Broxyquinoline, Acetarsol, Nifuroxazide, Nifurzide)
Intestinal adsorbents	Charcoal - Bismuth - Pectin - Kaolin - Crospovidone - Attapulgite - Diosmectite
Antipropulsives	Diphenoxylate - Opium - Loperamide - Difenoxin
Intestinal anti-inflammatory agents	corticosteroids acting locally (Prednisolone, Hydrocortisone, Prednisone, Betamethasone, Tixocortol, Budesonide, Beclometasone) antiallergic agents, excluding corticosteroids (Cromoglicic acid) aminosalicylic acid and similar agents (Sulfasalazine, Mesalazine, Olsalazine, Balsalazide)
Antidiarrheal micro-organisms	Saccharomyces boulardii
Other antidiarrheals	Albumin tannate - Ceratonia - Racecadotril