Examples include clopidogrel, cyclosporine, gemfibrozil, trimethoprim, azole antifungals such as itraconazole, macrolide antibiotics such as erythromycin, rifamycins such as rifabutin, St. Johns wort, among others. Many drugs can affect your blood sugar levels, making it more difficult to control your blood sugar. Examples include corticosteroids such as prednisone, psychiatric medicines such as olanzapine, fluoroquinolone antibiotics such as cPrandinrofloxacin, among others. Ask your doctor or pharmacist how often to check your blood sugar. Tell your doctor about the results and of any symptoms of high or low blood sugar. See also Side Effects section.
Your doctor may need to adjust your diabetes medication, exercise program, or diet. Beta-blocker medications such as metoprolol, propranolol, glaucoma eye drops such as timolol may prevent the fast/pounding heartbeat you would usually feel when your blood sugar level falls too low hypoglycemia. Other symptoms of low blood sugar such as dizziness, hunger, or sweating are unaffected by these drugs. Check the labels on all your medicines such as cough-and-cold products carefully.
Some products may contain sugar or alcohol and may affect your blood sugar levels. Ask your doctor or pharmacist about using these products safely. Other medications can affect the results of urine tests for sugar or ketones. Consult your doctor or pharmacist for more information. If overdose is suspected, contact a poison control center or emergency room right away.