# Does a vial of Fiasp really only last 28 days?

**URL:** <https://forum.fudiabetes.org/t/does-a-vial-of-fiasp-really-only-last-28-days/10527>\
**Category:** Type 1 & LADA\
**Created:** [November 24, 2020, 4:15pm UTC](https://forum.fudiabetes.org/t/does-a-vial-of-fiasp-really-only-last-28-days/10527 "2020-11-24T16:15:11Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![bkh](https://avatars.discourse-cdn.com/v4/letter/b/da6949/32.png) [@bkh](https://forum.fudiabetes.org/u/bkh)\
**Post date:** [November 24, 2020, 6:47pm UTC](https://forum.fudiabetes.org/t/does-a-vial-of-fiasp-really-only-last-28-days/10527/2 "2020-11-24T18:47:48Z")

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> [@bob.carlson](#):
>
> Got my first vial and saw the claim on the box that it could only be used for 28 days.

Doesn’t your Humalog box also say discard after 28 days? The general experience seems to be that insulin lasts a long, long time past it’s expiration date. I have no personal experience with Fiasp.

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