Product was successfully added to your shopping cart.
Free Shipping Over $49
Call Now! 877-847-7389

You have no items in your shopping cart.

  • Humulin NPH U-100 Insulin Humulin NPH U-100 Insulin

Humulin NPH U-100 Insulin

by Cardinal Health


Out of stock

Please note: Express shipping required for this temperature sensitive product.

This product requires a veterinarian's prescription.

This Rx product can not be shipped to some states.



  • Controls glucose levels in diabetic dogs 
  • Rapid improvement in blood glucose levels
  • An intermediate-acting insulin with a slower onset of action and a longer duration of activity than most insulin on the market.

Do not use Humulin N: 

if the insulin substance the white material remains at the bottom of the bottle after mixing or 
if there are clumps in the insulin after mixing, 
if solid white particles stick to the bottom or wall of the bottle, giving a frosted appearance. 
If you see anything unusual in the appearance of Humulin N suspension in your bottle or notice your insulin requirements changing, talk to your veterinarian 

Possible Side Effects:

A skin reaction at the site of the injection 
Skin thickening or pitting at the site of the injection 
Low blood sugar levels hypoglycemia if too much is taken 
High blood sugar levels hyperglycemia if too little is taken 


It is important to use the correct insulin syringe. 100 units/ml insulin U-100 requires a 100 unit syringe. 

No insulin should be injected into the same location every day, as this could result in scar tissue, which will affect absorption. Taking Humulin N with anabolic steroids, beta adrenergic blockers, MAOIs, aspirin, phenylbutazone, tetracycline can cause potentiation. The effects of Humulin N may decrease when taken with estrogen agents, glucocorticoids, progestin, thiazide diuretic, dobutamine, epinephrine, or furosemide. Burdock root may cause hypoglycemic effects and you may need to adjust dosages if taking with insulin. Thyroid hormones may cause an initial increase in blood sugar.

What to do if overdose? 

Contact your nearest emergency animal hospital.


Not in-use unopened: Humulin N bottles not in-use should be stored in a refrigerator, but not in the freezer. 
In-use opened: The Humulin N bottle you are currently using can be kept unrefrigerated as long as it is kept as cool as possible [below 86°F 30°C] away from heat and light. Do not use Humulin N after the expiration date stamped on the label or if it has been frozen.


Dosage and Administration:

It is important to follow your veterinarian's prescription instructions for your pet.

Correct Syringe Type:

Doses of insulin are measured in units. U-100 insulin contains 100 units/mL 1 mL=1 cc. 
With Humulin N, it is important to use a syringe that is marked for U-100 insulin preparations. Failure to use the proper syringe can lead to a mistake in dosage, causing serious problems for your pet, such as a blood glucose level that is too low or too high.

Syringe Use:

To help avoid contamination and possible infection, follow these instructions exactly. 
Disposable syringes and needles should be used only once and then discarded by placing the used needle in a puncture-resistant disposable container. 
Properly dispose of the punctureresistant container as directed by your Health Care Professional. 


Active ingredients: 

Humulin N is a crystalline suspension of human insulin with protamine and zinc providing an immediate-acting insulin with a slower onset of action and a longer duration of activity up to 24 hours

Additional Information

Is Rx Product Yes

Free Shipping

Free Shipping

Need Help?

Need Help?

Read "Ask Dr. Barry"