May potentiate hypoglycemic effect w/ phenylbutazone, salicylates, sulfonamides, coumarin derivatives, MAOIs, β-adrenergic blockers, ACE inhibitors, tetracycline compd, chloramphenicol, clofibrate, disopyramide, oral miconazole, cimetidine, oral antidiabetics, GLP-1 receptor agonists or insulin, H2-receptor antagonists & medicines containing alcohol. May diminish hypoglycemic action w/ corticosteroids, OCs, thiazide diuretics, phenothiazines derivative, thyroid hormones & abuse of laxatives. May reduce blood clotting effects of warfarin.