What is the duration of short acting insulin?

Short-acting insulin typically has a duration of action that is generally recognized as lasting around 5-8 hours. This type of insulin begins to work relatively quickly, usually within 30 minutes after injection, and reaches its peak action around 2-4 hours. The duration is important to effectively manage blood glucose levels after meals, as it helps to regulate postprandial (after eating) glucose spikes.

The specific duration can vary slightly based on individual response and factors like the injection site and overall metabolic state. Understanding this duration is crucial for patients and healthcare providers when planning meal times and insulin administration, ensuring effective glycemic control without risking hypoglycemia.