Which medication is indicated for hyperglycemia emergencies?

Insulin is indicated for hyperglycemia emergencies due to its role in lowering elevated blood glucose levels. In situations such as diabetic ketoacidosis or hyperglycemic hyperosmolar state, administering insulin helps to restore normal glucose levels quickly and effectively by facilitating the uptake of glucose into the cells. This action is crucial in preventing the complications that arise from prolonged elevated blood sugar levels, which can lead to serious health issues.

While other medications such as glucagon can be used in some forms of diabetes treatment, it is primarily indicated for hypoglycemia, not hyperglycemia. Metformin is used in the management of type 2 diabetes to help control blood sugar over the long term but is not suitable for acute hyperglycemia scenarios. Glucose tablets are typically employed for treating hypoglycemia rather than hyperglycemia, as they provide a quick source of sugar when levels are too low. Thus, insulin is the appropriate choice for managing hyperglycemia emergencies.