http://www.rxlist.com/nexium-drug.htm
Per the Nexium drug information, the ideal temperature is 77 degrees but it's okay to go from 59-86 degrees. This is considered a room temperature drug. Basically you just don't want to keep it in your car or the refrigerator. If you go on an airplane you should pack it in your carry on as the baggage part of the plane is probably not regulated for temperature.
Stephanie
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