Which insulin is known for its rapid onset of action?

Humalog, which is a brand name for insulin lispro, is characterized by its rapid onset of action, typically starting to work within 15 minutes after injection. This quick onset makes it particularly effective for managing blood sugar levels during meals, as it mimics the natural insulin response that occurs in the body when food is consumed.

In the context of diabetes management, the prompt action of Humalog is crucial for preventing postprandial (after meal) hyperglycemia. It is often used in conjunction with meals to provide precise control over blood glucose levels and reduce the risk of complications associated with sustained high blood sugar.

Other insulins like regular insulin have a slower onset, while Lantus (insulin glargine) is a long-acting insulin designed for basal control with no peak, and therefore it does not act rapidly. Novolog, also known as insulin aspart, is another rapid-acting insulin similar in function to Humalog, but among the given options, Humalog is specifically noted for its rapid onset, helping in immediate blood sugar management.