Optibac probiotics for traveling abroad for travelling abroad from optibac probiotics is the ideal supplement for travel with species such as l acidophilus and s boulardii this like the rest of the range does not require refrigeration optibac probiotics to take prior to and during your travels whos it for travellers seeking a supplement for foreign environments such as india egypt and mexico each capsule provides 5 billion live cultures guaranteed until end of expiry this s