This document discusses the different types of insulin, including their brand names, onset times, peak times, and durations of action. It separates insulins into rapid-acting, short-acting, intermediate-acting, and long-acting categories. Rapid-acting insulins have onsets of 10-30 minutes, peaks of 30-90 minutes, and durations of 1-5 hours. Short-acting insulin has an onset of 30 minutes to 1 hour, a peak of 2-5 hours, and a duration of 5-8 hours. Long-acting insulins have onsets of 1-2 hours and durations of 20-24 hours without a peak.