I'm no expert on this by any means, but from 30 seconds of looking this up, it appears there are several different kinds of insulin, which have different interactions. Also these different kinds of insulin can have different strengths per milliliter of fluid. If anything, it seems this stuff is really easy to find out with a simple google/duckduckgo/startpage/yandex search, with search terms like "insulin toxicity dosage", "insulin overdose" and so on.