There are many insulin regimens; which is an example of rapid-acting insulin?

There are many insulin regimens; which is an example of rapid-acting insulin?

• A. Regular insulin
• B. NPH insulin
• C. Insulin lispro
• D. Insulin glulisine

Answer: (D)

Rapid-acting insulin is designed to start working quickly after injection to control the rise in blood glucose that happens with meals. It’s typically used at mealtimes because it mimics the body's normal rapid first-phase insulin response. Insulin glulisine fits this category well: it begins to act in about 15 minutes, peaks around 1 hour, and lasts roughly 3–5 hours. This profile makes it effective for covering post-meal glucose spikes. Other options here belong to different insulin categories. Regular insulin is a short-acting type, which starts later (about 30–60 minutes) and has a different peak and duration. NPH is intermediate-acting, with onset in a few hours and a longer duration, not suited for immediate post-meal coverage. Insulin lispro is also rapid-acting, so it’s another correct example, though this item points to glulisine as the rapid-acting option.

Rapid-acting insulin is designed to start working quickly after injection to control the rise in blood glucose that happens with meals. It’s typically used at mealtimes because it mimics the body's normal rapid first-phase insulin response.

Insulin glulisine fits this category well: it begins to act in about 15 minutes, peaks around 1 hour, and lasts roughly 3–5 hours. This profile makes it effective for covering post-meal glucose spikes.

Other options here belong to different insulin categories. Regular insulin is a short-acting type, which starts later (about 30–60 minutes) and has a different peak and duration. NPH is intermediate-acting, with onset in a few hours and a longer duration, not suited for immediate post-meal coverage. Insulin lispro is also rapid-acting, so it’s another correct example, though this item points to glulisine as the rapid-acting option.