How long does it take for humulin to work?

Humulin, which is a brand of insulin, typically starts to work within 30 minutes to 1 hour after injection. The peak effect usually occurs between 2 to 3 hours, and its duration can last up to 6 to 8 hours, depending on the specific formulation (like Humulin R, N, or 70/30). Individual response may vary based on factors such as the type of Diabetes, injection site, and personal metabolism. Always consult with a healthcare provider for personalized advice.