in 36 unselected patients with ulcerative colitis or crohn 's disease taking 4.5-6 gm . salicylazosulfapyridine per day the incidence of hemolysis and its relation to the serum level of salicylazosulfapyridine ( salazopyrin , azulfidline , sasp ) , free sulfapyridine ( sp ) and acetyl sulfapyridine ( ac-sp ) was investigated .
C0036078
salicylazosulfapyridine
C0699547
salazopyrin