Sulfasalazine
Category : Aminosalicylates Sulfasalazine is a combination of 5-aminosalicylic acid (‘5-ASA') and sulfapyridine; sulfapyridine acts only as a carrier to the colonic site of action but still causes side-effects. In the newer aminosalicylates, mesalazine (5-aminosalicylic acid), balsalazide (a prodrug of 5-aminosalicylic acid) and olsalazine (a dimer of 5-aminosalicylic acid which cleaves in the lower bowel), the sulphonamide-related side-effects of sulfasalazine are avoided, but 5-aminosalicylic acid alone can still cause side-effects including blood disorders (see recommendation below) and lupus-like syndrome also seen with sulfasalazine. Cautions Aminosalicylates should be used with caution in renal impairment, during pregnancy and breast-feeding; blood disorders can occur. Blood disorders: Patients receiving aminosalicylates should be advised to report any unexplained bleeding, bruising, purpura, sore throat, fever or malaise that occurs during treatment. A blood count should be...