What is glucagon?

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Glucagon is an emergency medication used to treat very low blood glucose (hypoglycemia). It comes in a kit and is given by injection when a person's blood glucose has dropped so low that he or she cannot eat or drink, or is unconscious or having seizures.
John A. Chabot
Endocrinology Diabetes & Metabolism

Glucagon is a hormone produced by the pancreas that is involved in carbohydrate metabolism. Glucagon is released when blood glucose levels are low, stimulating the liver to convert stored glycogen into glucose and release it into the bloodstream.

Glucagon is a hormone produced by the alpha cells in the pancreas that raises blood glucose levels. An injectable form of glucagon, available by prescription, may be used to treat severe hypoglycemia. Glucagon will not work on people with type 2 diabetes or someone who has no glucose stored in the liver, which can occur in cases of starvation, chronic hypoglycemia, or in people who struggle with alcoholism.
Glucagon is a hormone naturally produced by the pancreas. As a prescription drug, glucagon treats hypoglycemia and insulin coma due to severely low blood sugar. It is sometimes used in diagnosing disorders of the digestive organs. It is administered by injection beneath the skin, into a muscle or vein. It comes in powder or liquid forms to be mixed right before the dose is administered. Glucagon should be administered as soon as a severe low blood sugar episode is recognized.