tolbutamide half-life was increased by chronic administration of sulfaphenazole ( 9.5 hr to 28.6 hr , n = 2 ) , phenylbutazone ( 7.9 hr to 23.1 hr , n = 8 ) , and oxyphenbutazone ( 8.1 hr to 30.2 hr , n = 2 ) .
C0031463
phenylbutazone
C0030078
oxyphenbutazone