Each insulin dose you take reaches its peak effect at a particular time after the injection. For example, the short-acting insulin you took at breakfast affects your blood glucose level just before lunch.
In a person without diabetes, the pancreas delivers a steady, low level of insulin into the blood all day long. This is called the basal level of insulin. At mealtimes, the pancreas also releases higher amounts of insulin, called a bolus dose. As more carbohydrates are eaten, a bigger insulin bolus is released.
The result: blood glucose stays in the normal zone throughout the day (the yellow band shown at the top of the chart):
Once you understand how and when insulin works in your body - and how that relates to your food intake and physical activity - you can adjust your doses to stay in your blood glucose target range. The goal is to come as close as possible to the action of a healthy insulin-producing pancreas.
The regimens below are examples of injection plans that are commonly used for flexible insulin therapy (FIT). Remember, FIT is an individualized approach based on age, lifestyle, and other factors. The regimen prescribed by your doctor may differ from the examples you see here.
These injection plans are designed to imitate the effect of a healthy pancreas.
Flexible Regimen - For example only*
|Insulins||Regular- or rapid-acting and intermediate-acting.|
|Number of injections||Four per day.|
Intermediate insulin starts working in two to four hours. The morning dose covers you throughout the day and the evening dose works through the night.
|Comments||** This regimen does not use Lantus® (insulin glargine). Lantus cannot be mixed with any other insulin.|
* Information on the BD web site should not be used as a substitute for professional medical advice. Please contact your doctor to discuss your diabetes care.