Does Nph Insulin Have to Be Refrigerated

How do I store and/or throw out Insulin NPH and Insulin Regular? Store unopened containers in a refrigerator. Do not freeze. Do not use if it has been frozen.

How long is NPH insulin unrefrigerated?

Insulin products contained in vials or cartridges supplied by the manufacturers (opened or unopened) may be left unrefrigerated at a temperature between 59°F and 86°F for up to 28 days and continue to work.

Does insulin go bad if not refrigerated?

Unopened insulin vials can be stored in the fridge until their expiration date, and outside the fridge for 28 days. Once opened, most insulin vials last up to 28 days inside or outside the fridge.