Diabetes in Dogs: The k9diabetes.com Forum - Dr. Peterson on equivalence of Humulin and Novolin NPH

Dr. Mark Peterson on the bioequivalence of Novolin/Relion and Humulin NPH.

http://endocrinevet.blogspot.com/2014/04/humulin-versus-novolin-nph-insulin-are.html

Quote:

Most dogs will respond well to the Novolin/ReliOn brand of insulin, which is indeed much less expensive than most other brands of NPH insulin. However, we cannot just assume that the two insulin preparations would be equivalent. I would not recommend switching from one insulin to the other without close monitoring (including blood glucose curves) so that the dose can be adjusted as needed.