What is the duration of action for Regular Insulin?

The duration of action for Regular Insulin is typically around 5 to 7 hours. Regular Insulin, also known as short-acting insulin, is designed to be administered before meals to manage blood glucose levels post-prandially. After injection, Regular Insulin reaches its peak action within 2 to 3 hours and then begins to taper off after around 5 to 7 hours. This time frame allows it to effectively control blood sugar levels when used as part of a diabetes management plan.

The other potential duration ranges mentioned do not accurately reflect the characteristics of Regular Insulin. The 1-3 hours duration is more representative of the onset and peak times rather than its overall effective duration. Durations like 10-12 hours and 24 hours would better describe long-acting insulin formulations rather than the short-acting properties of Regular Insulin.