How should Engerix B 20 micrograms/1 ml hepatitis B vaccine (rDNA) pre-filled syringes be stored?

Store Engerix B 20 micrograms/1 ml pre-filled syringes refrigerated at 2–8°C in the original package without freezing; stability up to 37°C for 3 days or 25°C for 7 days is guidance for healthcare professionals managing temporary temperature excursions only.