Risk of hypoglycaemia w/ other antidiabetics, disopyramide, fluoxetine, sulfonamide antibiotics, fibrates, MAOIs, ACE inhibitors, analgesics & antipyretics (eg, pentoxifylline, propoxyphene, ASA), pentamidine. Risk of hyperglycaemia w/ corticosteroids (eg, cortisone, prednisolone), danazol, diazoxide, PIs, diuretics, glucagon, INH, somatropin, thyroid hormones, oestrogens & progestogens, clozapine, olanzapine, phenothiazine derivatives, sympathomimetic medicines (eg, epinephrine, salbutamol, terbutaline). Increased or decreased blood sugar level w/ β-blockers, clonidine, lithium salts, alcohol. Reduced warning signs of low blood sugar w/ β-blockers, clonidine, guanethidine, reserpine. Potential interaction w/ warfarin or other anticoagulants.