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NPH Insulin/Regular Insulin

How Should NPH Insulin/Regular Insulin Be Stored?

Unopened vials and pens should be kept in the refrigerator. Vials can be kept at room temperature or in the refrigerator once opened. Prefilled injection devices must be stored at room temperature once they have been used.
 
Insulin can be used only for a specific time after it is opened (this varies depending on the particular brand and product). Check the patient information that comes with your insulin (or ask your healthcare provider) for more specific storage information.
  

Strengths of NPH Insulin/Regular Insulin

NPH insulin/regular insulin comes in the following strengths: 
 
  • Humulin 70/30 vials -- 10 mL, with 100 units of insulin per mL (70 percent NPH insulin and 30 percent regular insulin)
 
  • Humulin 70/30 pen -- 3 mL, with 100 units of insulin per mL (70 percent NPH insulin and 30 percent regular insulin)
 
  • Novolin 70/30 vials -- 10 mL, with 100 units of insulin per mL (70 percent NPH insulin and 30 percent regular insulin)
 
Humulin 50/50 vials and Novolin 70/30 cartridges and InnoLet® devices have been discontinued by their manufacturers.

 

Who Makes It?

Eli Lilly and Company manufactures the Humulin brand of insulins. Novo Nordisk makes the Novolin brand of insulins.
 

Is Generic NPH Insulin/Regular Insulin Available?

At this time, NPH insulin/regular insulin is not available in generic form (see Generic Humulin 70/30, or Generic Novolin 70/30).
 
Diabetes Tips for Seniors

NPH Insulin/Regular Insulin Information

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