If I need insulin to control my blood glucose, which type should I take?

Your insulin doses should mimic how insulin works naturally in the body. In people without diabetes, the pancreas makes and releases small amounts of insulin throughout the day and night. This is called the basal insulin. The pancreas also releases a short burst of insulin when people without diabetes eat and their blood glucose begins to rise. This is called a bolus of insulin.
Long-acting insulins are basal insulins. Rapid-acting and regular insulins are bolus insulins. Intermediate-acting insulin may provide both basal and some bolus effect or, if taken at bedtime, provide mostly a basal effect. Most people with diabetes take both basal and bolus insulin.

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