Gemfibrozil, clarithromycin, itraconazole, ketoconazole, ciclosporin, ocreotide, deferasirox, phenytoin, crabamazepine, phenobarbital, St. John's wort; MAOIs, nonselective β-blockers, ACE inhibitors, salicylates (eg, aspirin), NSAIDs, steroids (anabolic & corticosteroids), glucocorticoids, OCs, thiazides, danazol, thyroid hormones, sympathomimetics. Risk of hypoglycaemia w/ alcohol.