Humulin N may not work as well when you use other medicines at the same time. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Some drugs can also cause you to have fewer symptoms of hypoglycemia, making it harder to tell when your blood sugar is low. Not all possible interactions are listed here. Tell your doctor about all medicines you start or stop using.
 Humulin N drug interactions (more detail)
