Glucagon is a medication used to manage and treat hypoglycemia, which is low blood sugar, as an antidote to beta-blocker and calcium channel blocker overdose, anaphylaxis refractory to epinephrine, and aid in passing food boluses. It is in the anti-hypoglycemic class of medications. Glucagon is FDA approved for the treatment of severe hypoglycemia, which is a life-threatening event treated with oral carbohydrate intake, IV glucose, or glucagon by various routes. Glucagon is a reliable method of raising the patients glucose and relieving severe hypoglycemia long enough for more definitive correction of the patients glucose levels by mouth, particularly when IV access is unavailable to the provider or has failed. Glucagon is also utilized in biopsies, abscess drainage, GI stenting, and as a diagnostic aid in imaging of the GI tract. Glucagon injection is an emergency medicine used to treat severe hypoglycemia (low blood sugar) in diabetes patients treated with insulin who have passed out or cannot take some form of sugar by mouth. It is also used as a diagnostic aid during X-ray tests of the stomach and bowels to improve test results by relaxing the muscles of the stomach and bowels. Glucagon works by causing the liver to release stored sugar to the blood and relaxing smooth muscles of the stomach and other digestive organs for diagnostic testing.