Humulin N (isophane insulin human) is a brand-name medication the Food and Drug Administration (FDA) has approved to treat type 1 diabetes and type 2 diabetes. It can be used in adults and children.
The active ingredient in Humulin N is NPH insulin. (An active ingredient is what makes a drug work.) Humulin N comes as a suspension (a type of liquid mixture) that you inject under your skin. It’s ...