As a medication,<unk> is any pharmaceutical preparation of the protein hormone<unk> that is used to treat high blood glucose. Such conditions include type 1 diabetes, type 2 diabetes, gestational diabetes, and complications of diabetes such as diabetic ketoacidosis and hyperosmolar hyperglycemic states.<unk> is also used along with glucose to treat hyperkalemia (high blood potassium levels). Typically it is given by injection under the skin, but some forms may also be used by injection into a vein or muscle. There are various types of<unk>  suitable for various time spans. The types are often all called<unk> in the broad sense, although in a more precise sense,<unk> is identical to the naturally occurring molecule whereas<unk> analogues have slightly different molecules that allow for modified time of action. It is on the World Health Organization's List of Essential Medicines. In 2019, regular human<unk> was the 298th most commonly prescribed medication in the United States, with more than 1million prescriptions.<unk> can be made from the pancreas of pigs or cows. Human versions can be made either by modifying pig versions or recombinant technology. It comes in three main types: short–acting (such as regular<unk> , intermediate-acting (such as neutral protamine Hagedorn (NPH)<unk> , and longer-acting (such as<unk> glargine).
Insulin 
Regular insulin
Pulsatile insulin
Lente insulin
Proglucagon
Ultralente insulin
Glucuronide
Glucagon 