Glucagon is a hormone produced by the alpha cells of the pancreas. It plays a crucial role in regulating blood glucose levels in the body. When blood sugar levels drop, glucagon is released, stimulating the liver to convert stored glycogen into glucose and release it into the bloodstream. This process, known as glycogenolysis, helps to increase blood sugar levels and provide the body with a source of energy.

Please Note: Glucagon is not typically available in the form of capsules or supplements for general use. It is primarily administered in emergency situations, such as severe hypoglycemia (low blood sugar), through an injectable form.