Question??????
There is no need to refrigerate Profect - they advertise it can be kept unrefrigerated if unopened. But you really need to drink it all at once. Once your saliva gets into it, the shelf life is dramatically reduced. If you open it you need to refrigerate it. But you should be drinking all of it for 25g protein in one go. I drink these all the time - three a day - and just drink them all back on one go so it is over and done with! They do taste better if they are really cold though so I refrigerate mine. .....
Jackie