<unk> , also known as neutral insulin and soluble insulin is a type of short-acting insulin. It is used to treat type 1 diabetes, type 2 diabetes, gestational diabetes, and complications of diabetes such as diabetic ketoacidosis and hyperosmolar hyperglycemic states. It is also used along with glucose to treat high blood potassium levels. Typically it is given by injection under the skin, but may also be used by injection into a vein or muscle. Onset of effect is typically in 30 minutes and it typically lasts for 8 hours. The common side effect is low blood sugar. Other side effects may include pain or skin changes at the sites of injection, low blood potassium, and allergic reactions. Use during pregnancy is relatively safe for the baby.<unk>  can be made from the pancreas of pigs or cows. Human versions can be made either by modifying pig versions or recombinant technology. Insulin was first used as a medication in Canada by Charles Best and Frederick Banting in 1922. It is on the World Health Organization's List of Essential Medicines. In 2017, it was the 73rd most commonly prescribed medication in the United States, with more than ten million prescriptions. Versions are also available mixed with longer-acting versions of insulin, such as NPH insulin.
Regular insulin
Lente insulin
Ultralente insulin
Pulsatile insulin
Insulin aspart
Insulin glargine
NPH insulin
Insulin glulisine