Best Short Acting Insulin

Also known as regular short acting insulin, neutral insulin and soluble insulin, short acting insulin starts working within 30mins after injection and can last for up to six hours. These insulins are available over the counter. However, they are mostly synthetic human insulin and may not be effective as insulin analogs that are available with the prescriptions. Examples of short acting insulin are Humulin R, Novolin R, Velosulin R.