Store in a refrigerator (2°C - 8°C).
Do not freeze.
Store in the original package in order to protect from light.
Stability data indicate that Engerix-B is stable at temperatures up to 37°C for 3 days or up to 25°C for 7 days. These data are intended to guide healthcare professionals in case of temporary temperature excursion only. The storage conditions are detailed on the packaging.