Treat hypoglycemia (sometimes called an insulin reaction) as soon as possible. Untreated, hypoglycemia can cause a seizure or unconsciousness. See the article below for more information.
Products that help with hypoglycemia are called glucose tablets. You can purchase them here on Amazon.com. They work faster than any other food or drink. Keep them on you at all times. Hypoglycemia isn’t anything to mess with.