What is the duration of action for Regular insulin?

The duration of action for Regular insulin typically ranges from about 6 to 8 hours. However, in clinical practice, it is often emphasized that the effective duration can be considered around 6 to 10 hours depending on factors like the individual's metabolism, the injection site, and the presence of other medications or food intake.

Regular insulin is a short-acting form of insulin that begins to work within 30 minutes after injection and peaks in its action around 2 to 3 hours, with the overall action lasting up to roughly 6 to 8 hours. Therefore, a duration closer to 8 hours is more widely accepted in clinical settings, which means the duration does not typically extend beyond that significantly.

While saying 10 hours may encompass some patient variability, it's not the standard understanding. Thus, the more accurate focus for the effective duration of Regular insulin is within that 6 to 8 hour range, making the best answer close to that timeframe rather than extending to 10 hours.