Strengthened blood-sugar-lowering effect w/ other oral antidiabetics or insulin; antibiotics (eg, sulphonamides, clarithromycin); β-blockers, or ACE inhibitors (eg, captopril, enalapril); antifungals (eg, miconazole, fluconazole); H
2 receptor antagonists; MAOIs; analgesics or antirheumatics (eg, phenylbutazone, ibuprofen); alcohol-containing medicines. Weakened blood-sugar-lowering effect w/ chlorpromazine; corticosteroids or tetracosactrin; IV salbutamol, ritodrine, terbutaline; danazol. Increased effects of warfarin.