What is glucagon?

Glucagon is a naturally occurring hormone that is produced in the pancreas. The main function of glucagon is to react to a situation where there is a low level of blood sugar present. The release of glucagon into the bloodstream helps to restore blood glucose levels back to a point that is considered acceptable for the general function of the body. So, if the body has too much insulin, as in the case of diabetes, the pancreas will emit glucagon to attempt to stabilize everything.
Glucagon is a hormone, secreted by the Islets of Langerhans by Alpha Cell in Pancreas, that raises blood glucose levels. Its effect is opposite that of insulin, which lowers blood glucose levels