- Insulin typically is stored in the refrigerator, but it may be more painful when injected this way. Insulin stored at room temperature will last about a month.
- Don't keep your insulin in extremely hot or extremely cold temperatures.
- Never keep insulin in the car, in direct sunlight or in the freezer.
- Check the bottle's expiration date, and discard any insulin that's expired.
- Inspect the bottle before inserting the syringe to make sure the insulin looks as it should.
- Don't use insulin that has formed any crystals or clumps.
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The proper guidelines for the storage of insulin: