1. Look for Symptoms
Diabetics are the most likely candidates for insulin poisoning. Their bodies don't produce enough insulin normally, so they must take additional injections to keep their levels safe. It's possible that someone could overdose on it if he's measured the shot incorrectly. Early symptoms include headaches, a feeling of weakness, sweating and increased appetite. If the insulin poison isn't treated, the victim will feel increasingly drowsy, have a hard time concentrating and may suffer from convulsions. Eventually, he will slip into a diabetic coma and die.
2. Give the Victim Sugar
Insulin poisoning causes hypoglycemia, which means low blood sugar. The fastest way to treat it is to get sugar into the victim's body. If she is conscious, add sugar to a glass of orange juice and have her drink it. Other fruit juice may work too if it's high in sugar and even a chocolate bar can be helpful. In a pinch, you can use sugar packets like the kind found in any coffee shop. Watch the amounts you give; while overfeeding the victim sugar shouldn't cause any danger, it doesn't speed up recovery either. A single glass of juice, a drink of sugary soda (about one-third of a can) or a bar of chocolate should be enough. If the victim doesn't improve within about 5 or 10 minutes, call a doctor.
3. Use Glucose Medication
Some diabetics may have particular medication around to up their blood sugar levels. One of the most prevalent is instant glucose, a paste-like substance available in tubes. Some diabetics may also have a glucose injection nearby, which you can use if the victim is convulsing or unable to swallow anything. Doctors and paramedics may have glucose available in an IV bag, which they will administer in an emergency.
4. Monitor Blood Glucose Levels
Most diabetics have a glucometer, a machine which monitors their blood sugar levels. You can use it to monitor the victim's overall health and make sure that the symptoms of insulin poisoning don't repeat themselves. It's best to use it just before meals, so you know how much the victim should consume. Also keep an eye on the victim's exercise habits. Too much exercise without eating can lower the blood sugar levels and cause another hypoglycemic episode.
