Reduced insulin requirements w/ oral antidiabetics, MAOIs, non-selective β-blockers, ACE inhibitors, salicylates, anabolic steroids, sulphonamides. Increased insulin requirements w/ OCs, thiazides, glucocorticoids, thyroid hormones, sympathomimetics, growth hormone, danazol. Masked hypoglycaemia symptoms & delayed recovery from hypoglycaemia by β-blockers. Increased/decreased insulin requirement w/ octreotide/lanreotide. Intensified or reduced insulin hypoglycaemic effect by alcohol. Not to be added to infusion fluids.