CHF may develop in combination w/ thiazolidinediones, especially in patients w/ risk factors. May reduce patient's insulin requirements w/ oral antidiabetics, GLP-1 receptor agonists, MAOIs, β-blockers, ACE inhibitors, salicylates, anabolic steroids & sulfonamides. May increase insulin requirements w/ OCs, thiazides, glucocorticoids, thyroid hormones, sympathomimetics, growth hormone & danazol. Masked symptoms of hypoglycemia w/ β-blockers. Increased or decreased insulin requirement w/octreotide/lanreotide. Intensified or reduced hypoglycemic effect w/ alcohol.