Final answer:
Sulfonylureas, glucocorticoids, and diuretics are drug categories that can raise blood glucose levels in diabetics.
Step-by-step explanation:
For diabetics, certain categories of drugs can raise blood glucose levels. One such category is sulfonylureas, which include the drug gliclazide. Sulfonylureas stimulate the beta cells of the pancreas to secrete insulin, but they can also cause hypoglycemia (low blood sugar) as a side effect. This is because they increase insulin release, which can lead to excess insulin in the bloodstream.
Another drug category that can raise blood glucose levels is glucocorticoids. Glucocorticoids, such as prednisone, are commonly prescribed for various conditions, but they can impair insulin action and increase glucose production, leading to elevated blood sugar.
Lastly, diuretics, which are used to treat high blood pressure and other conditions, can cause increased blood glucose levels. Some diuretics can decrease insulin sensitivity, leading to higher blood sugar.