What is the antidote for hypoglycemic agents?

Glucagon is the correct antidote for hypoglycemic agents because it stimulates the liver to release stored glucose into the bloodstream. This is particularly important during instances of severe hypoglycemia, where immediate elevation of blood glucose levels is necessary to prevent serious complications. Glucagon works by activating glycogenolysis and gluconeogenesis in the liver, effectively counteracting the effects of hypoglycemic medications or conditions.

Insulin does not serve as an antidote; in fact, it would exacerbate hypoglycemia by lowering blood glucose levels further. Atropine is primarily used for its effects on the cardiovascular system and does not have any role in treating low blood sugar. Calcium gluconate is used for hypocalcemia and does not address issues related to blood glucose levels. Thus, glucagon is the specific treatment indicated for reversing the impacts of hypoglycemic agents.