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Glucagon rescue is the emergency injection of glucagon in case of severe diabetic hypoglycemia. It is needed during seizures and/or unconsciousness by an insulin user who is unable at that point to help themselves. Glucagon will facilitate the release of stored glucose back into the bloodstream, raising the blood glucose level.
Rescue has been simplified by the development of the glucagon hypoglycemia rescue kit, consisting of:
- biosynthetic human glucagon, in a freeze dried form within a vial,
- a sturdy syringe, pre-filled with a sterile diluting solution, and
- a conspicuous red or orange colored plastic storage box, which includes instructions.
At the first signs of hypoglycemia, an insulin user should treat it immediately by consuming carbohydrate to restore blood glucose to safe levels (thereby preventing progression to severe hypoglycemia). However, not all insulin users can feel and recognize the early signs, particularly when sleeping. This can quickly lead to an emergency resulting in unconsciousness, inability to swallow, seizures, and in extreme cases death. In the past, treatment consisted of intravenous delivery of dextrose (glucose) usually in a hospital emergency department; however, the delay in treatment due to emergency response and transport to a medical facility is life-threatening.
Glucagon rescue kits
Potential issues with glucagon administration
Glucagon must be reconstituted using a multi-step process that requires the administrator to use a prepared syringe containing an inactive compound and a sealed dosage bottle of glucagon. After the contents of the syringe are injected into the glucagon bottle, the administrator must determine if the reconstitution appears appropriate: clear with a water-like consistency. This is a subjective assessment. The solution must be drawn back into the syringe, the injection site cleaned with alcohol, and then injected with sufficient force into fatty tissue. Individuals who have not performed this procedure before are at a disadvantage increased by the potential for severe hypoglycemia 
At the present time, there are no ready-made formulations of glucagon; within hours of reconstitution, the molecule will degrade into amyloid fibrils. Combined with the anxiety of performing a rescue is expense, bulkiness, and concerns over dosing correctly; fortunately, there is no biochemical way to overdose on intramuscularly injected glucagon.
Politics of glucagon rescue
Glucagon 'mini-dose' instruction
The purpose of the off-label 'mini-dose' is to avoid an emergency condition that may require glucagon rescue. This might be needed in cases such as when a diabetic child is injected with insulin before breakfast, eats, and then vomits and cannot eat again: with the injected insulin working its way into the bloodstream and no carbohydrate to balance, there may soon be a hypoglycemic emergency.
Medical studies have shown that the mini-dose rescue is tolerated well and effective.
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