Medicines that may cause your blood sugar level to fall (hypoglycaemia) include: − all other medicines to treat diabetes, − angiotensin converting enzyme (ACE) inhibitors (used to treat certain heart conditions or high blood pressure), − disopyramide (used to treat certain heart conditions), − fluoxetine (used to treat depression), − fibrates (used to lower high levels of blood lipids), − monoamine oxidase (MAO) inhibitors (used to treat depression), − pentoxifylline, propoxyphene, salicylates (such as aspirin, used to relieve pain and lower fever), − sulfonamide antibiotics.