What is the effect of NPH insulin on blood sugar levels?

NPH insulin, also known as Neutral Protamine Hagedorn insulin, is an intermediate-acting insulin that helps to manage blood sugar levels by providing a gradual release of insulin into the bloodstream. This allows for a steady lowering of blood sugar levels, typically starting within 1 to 2 hours after injection and peaking around 4 to 6 hours after administration. The gradual effect contributes to better management of blood glucose levels, especially in people with diabetes who require consistent control throughout the day.

In contrast to rapid-acting insulin, which leads to quick and notable drops in blood sugar, or long-acting insulin, which provides a prolonged effect without significant peaks and troughs, NPH's intermediate action fills a unique role in diabetes management. It is particularly beneficial for controlling blood sugar levels between meals and during the night, making it a helpful option in a comprehensive insulin regimen.