Novolin R
R,Neutral by Novo Nordisk
short-acting r-DNA/GE/GM
U100 none
Line Novolin
Also known as  
Similar to  
Action in cats  
  • onset Xh,
  • peak Xh
  • duration Xh
Action in dogs  
  • onset 10-30 minutes,
  • peak 1-5h,
  • duration 4-10h[1]
Use and Handling
Type soluble
Shelf Life 24 months
When opened 28 days room temp.
In pen 28 days room temp.
  • protect from light and heat
  • Do Not Freeze
  • May be used intravenously

Novo Nordisk's brand of "R"-action insuln is known by three names: Actrapid[2][3][4] in Europe: ReliOn/Novolin R and Novolin R in North America.

Other companies make similar products--they are: Humulin R[5][6] and Humulin S[7][8][9] by Eli Lilly and Insuman Rapid[10][11] by Aventis.


  1. Insulins-North American Veterinary Conference
  2. Prescribing Novo Insulins
  3. EMEA Scientific Discussion-Actrapid
  4. Electronic Medicines Compendium (EMC) UK-Patient Information Leaflet-Actrapid
  5. FDA-Humulin R
  6. Humulin R Regular Human Insulin
  7. Electronic Medicines Compendium (EMC) UK Patient Information Leaflet-Humulin S
  8. Humulin S Prescribing Information
  9. Lilly EU/UK Product Information Sheet & Time Activity Profiles
  10. Prescribing Insuman Insulins
  11. Electronic Medicines Compendium (EMC) UK-Patient Information Leaflet-Insuman Rapid
Community content is available under CC-BY-SA unless otherwise noted.