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What If I Take an Overdose of Levemir?

People who take too much Levemir (or any other insulin) may experience symptoms such as:
  • Low blood sugar levels (hypoglycemia)
  • Fainting
  • Shakiness
  • A fast heartbeat (tachycardia)
  • Confusion
  • Sweating
  • Seizures
  • Coma
  • Loss of life.
If you happen to take too much Levemir, seek immediate medical attention.
(Click Levemir Overdose for more information.)

How Should It Be Stored?

Unopened Levemir vials and pens should be stored in the refrigerator. It is best to keep the vials refrigerated once they are opened, although they may be kept at room temperature (less than 86 degrees Fahrenheit). Once you start using a FlexPen, you must not keep it in the refrigerator. Both the vials and FlexPen are good for up to 42 days once they are opened, after which you must discard any unused portion.


Levemir is available in the following forms:
  • Levemir vials -- 10 mL, with 100 units of insulin per mL
  • Levemir FlexPens -- 3 mL per pen, with 100 units of insulin per mL
  • Levemir FlexTouch pens -- 3 mL per pen, with 100 units of insulin per mL.
To use the pens, you must obtain pen needles (such as NovoFine® 30 or 31 gauge single-use needles). You will need a prescription for pen needles, and they can be purchased at most pharmacies. To use the vials, you will need insulin syringes, which generally come with needles attached. You may or may not need a prescription for insulin syringes, depending on the laws of your particular state and the dispensing practices of your particular pharmacy.
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Levemir Insulin Information

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