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How many days can a vial of humulin n be used to fill syringes when use of a vial has started?

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DzooBaby 8 Jan 2014

Usually a vial is good as long as you keep it cool. Here is what the literature says:
Storage

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.

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