What is Humulin N?

It is a man-made insulin that works the same as the natural hormone produced in our bodies. Insulin is a hormone produced in the pancreas to help the body regulate blood sugar levels. Humulin N is the brand name of insulin isophane. Insulin isophane refers to an intermediate-acting insulin, which means it lasts for longer in the body compared to regular insulin. As a result, this medication is normally prescribed together with fast-acting insulin to increase the speed at which it reduces high levels of blood sugar. Insulin isophane has an onset time of 2 to 4 hours and a peak time of 4 to 12 hours. This man-made insulin can last in the body for up to 18 hours.

Humulin N for dogs

Humulin N is usually prescribed to people with diabetes mellitus, but can also be used to treat dogs with diabetes. Diabetes refers to a condition where the body becomes resistant to insulin or does not produce enough amounts of insulin. Without insulin, the body cells cannot absorb glucose from the bloodstream. This leads to high levels of blood sugar, which, if not treated, can cause serious diabetes complications. Dogs with diabetes can take prescription drugs like Humulin N to help them control the levels of their blood sugar. The drug works by helping the muscle cells absorb glucose for energy.


Insulin isophane is an injectable insulin that is administered subcutaneously to dogs with diabetes. Do not inject Humulin N into your diabetic dog unless you have been shown how to administer it by your veterinarian. Your veterinarian will determine the dosage and number of times per day you should administer this insulin. Depending on the recommendation made by your veterinarian, insulin isophane can be administered once or twice per day. Usually, the dosage is between 0.5 to 1 unit per kg to be administered once or twice daily. Before you administer this medication, make sure you gently roll the vial in your hands to mix the drug. However, don’t shake the container. In case you notice any discoloration or particles inside the solution, do not administer it to your diabetic dog.

Disclaimer: Please note that the contents of this community article are strictly for informational purposes and should not be considered as medical advice. This article, and other community articles, are not written or reviewed for medical validity by Canadian Insulin or its staff. All views and opinions expressed by the contributing authors are not endorsed by Canadian Insulin. Always consult a medical professional for medical advice, diagnosis, and treatment.