Insulin R and insulin N are different types of insulin, insulin R and insulin N are both human insulins, of which insulin R is also known as short-acting insulin, which is a kind of mealtime insulin, with an onset time of 15-60 minutes, a peak time of 2-4 hours and a duration of action of 5-8 hours, and is usually injected subcutaneously 15-30 minutes before mealtime, so that the peak of insulin can coincide with the The peak of postprandial blood glucose is coincided with the peak of insulin. Insulin N is also known as medium-acting insulin, which is a type of basal insulin with an onset time of 2.5-3 hours, a peak time of 5-7 hours, and a duration of action of 13-16 hours.