HealthInfo Canterbury
Guidelines for giving glucagon
Ngā aratakinga mō te whāngai glucagon
These guidelines are for whānau (family), friends and colleagues of a person with diabetes, who may have to recognise and treat severe hypoglycaemia (also called a hypo or low blood glucose).
The person with diabetes gets glucagon through a doctor's prescription. They should check the expiry date every month and replace it if it has expired. It's usually stored in the fridge, so everyone knows where it is.
Glucagon
Glucagon is a hormone that raises blood glucose (sugar) levels by making the liver release its store of glucose. It isn't glucose. You give it by injection to help a person recover from very low blood glucose. In New Zealand it's available as GlucaGen HypoKit.
Glucagon should be injected when someone has very low blood glucose (severe hypoglycaemia) or when they can't swallow, respond when you speak to them or squeeze your hand when asked.
What to do if someone has very low blood glucose
- Roll the person onto their side. Make sure they're breathing easily.
- Call for an ambulance (phone 111).
- Don't leave the person alone.
- Don't try to feed the person anything through their mouth if they're unconscious or having seizures.
- Inject the glucagon into the muscle in their outer thigh.
It takes around 10 to 15 minutes for the glucagon to work. If the person still isn't responding, give them another injection.
How to give an injection with the GlucaGen HypoKit
- Follow the instructions inside the lid.
- Even if the glucagon has expired, you can still inject it and it will probably work.
- Take the orange cap off the vial.
- Take the grey needle cover off.
- Insert the needle through the rubber stopper of the vial.
- Inject all the liquid from the syringe into the vial.
- Without removing the needle, gently shake the vial until the powder has dissolved and the solution is clear.
- Turn the vial upside down and pull back the plunger until all of the solution is in the syringe. Be careful not to pull the plunger out of the syringe.
- Take the needle out of the vial.
- Inject the glucagon into the person's outer thigh.
- Put the syringe back into its box to be thrown away – don't put the needle cap back on.
- If you know how to, test the person's blood glucose level.
Recovery
- The person should wake up in around 10 to 15 minutes. If they still aren't responding, give them another injection.
- When they're awake, give them sips of ordinary (non-diet) soft drink or another sweet drink.
- About 60 to 90 minutes later, they may feel sick and even throw up. They may also have a headache.
- Every 15 to 30 minutes, check their blood glucose level or get them to check. After they begin to feel better, they should eat a snack that includes protein and carbohydrate (for example, a sandwich or crackers and cheese).
- The person should have their usual insulin injection after a severe hypo, but they should contact a doctor for medical advice on how much insulin to give.
- After a severe hypo, a person's blood glucose level is often higher than normal. Don't treat this with extra insulin.
- For two to three days after a severe hypo, the person might find it difficult to recognise symptoms of low blood glucose and their body might be less able than usual to cope with low blood glucose.
HealthInfo recommends the following videos
- Mayo Clinic – How to use glucagon video
This video shows how to give a glucagon injection to someone with severe hypoglycaemia. (The video tells you call 911 if the person doesn't respond. This is an American video. The emergency number in New Zealand is 111.)
Written by Christchurch Diabetes Centre. Adapted by HealthInfo clinical advisers. Last reviewed November 2022.
SourcesReview key: HIDIA-21832
