Stoffer, som kan nedsætte den blodsukkersænkende virkning, omfatter kortikosteroider, danazol, diazoxid, diuretika, glukagon, isoniazid, østrogener og gestagener (f. eks. 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).