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# FDA Allows Pfizer Vaccine Warmer Storage Temp
- URL: https://www.fdaweb.com/fda-allows-pfizer-vaccine-warmer-storage-temp/
- Published: 2021-02-25T12:00:00.000Z
- Updated: 2026-09-14T16:48:25.000Z
- Author: David McFarland
- Tags: Biologics, #legacy-id-D5148756

FDA says it is allowing undiluted frozen vials of the Pfizer-BioNTech Covid-19 Vaccine to be transported and stored at conventional temperatures commonly found in pharmaceutical freezers for a period of up to two weeks. Previously, the vaccine’s preferred storage was in an ultra-low temperature freezer between -80ºC to -60ºC (-112ºF to -76ºF). “This alternative temperature for transportation and storage of the undiluted vials is significant and allows the vials to be transported and stored under more flexible conditions,” [FDA says in a release](https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-allows-more-flexible-storage-transportation-conditions-pfizer?ref=fdaweb.com). “The alternative temperature for transportation and storage will help ease the burden of procuring ultra-low cold storage equipment for vaccination sites and should help to get vaccine to more sites.” The agency notes the temperature storage alternative is not applicable to the storage of thawed vials before dilution (which can be held in the refrigerator for up to five days), or on the storage of thawed vials after dilution (which can be held at refrigerator temperature or room temperature for use within six hours).