Most common medicines which may affect insulin treatment: Oral antidiabetic products; monoamine oxidase inhibitors (MAOI); β-blockers; ACE-inhibitors; acetylsalicylic acid; thiazides; anabolic steroids and glucocorticoids; thyroid hormone therapy; β-sympathomimetics; danazol; octreotide; lanreotide; oral contraceptives and sulphonamides. Consult the doctor or pharmacist if any other medicines are taken recently, even those not prescribed.