Glucagen (generic: glucagon) is a prescription medication used to treat very low blood sugar (severe hypoglycemia) in adults and children with diabetes.  Glucagen contains a hormone called glucagon, which helps raise sugar levels in the blood.

This medication comes in an injectable form and is injected in the buttock, arm, or thigh during severe hypoglycemic attacks.

Common side effects of Glucagen include nausea, vomiting, and reaction at the injection site.