Stoffer, som kan nedsætte den blodsukkersænkende virkning, omfatter kortikosteroider, danazol, diazoxid, diuretika, glukagon, isoniazid, østrogener og gestagener (f. eks i orale kontraceptiver), phenthiazinderivater, somatropin, sympatomimetika (fx adrenalin, salbutamol, terbutalin) og thyreoideahormoner, proteasehæmmere samt atypisk antipsykotisk medicin (f. eks. olanzapin og clozapin).
Substances that may reduce the blood-glucose-lowering effect include corticosteroids, danazol, diazoxide, diuretics, glucagon, isoniazid, oestrogens and progestogens (e. g. in oral contraceptives), phenothiazine derivatives, somatropin, sympathomimetic agents (e. g. epinephrine [adrenaline], salbutamol, terbutaline), thyroid hormones, protease inhibitors and atypical antipsychotic medicinal products (e. g. olanzapine and clozapine).