Supposedly the shelf life of liquid is around 2 years from date of production, when stored in a cool dark place. (Many brands of
juice come with production/expiration dates on the label, btw.) There have been a few instances of
juice going bad, particularly opened bottles that may have been contaminated with bacteria, etc. And several people have claimed that their liquid seemed to have lost potency or flavor after being stored for awhile. For the most part, storing an open bottle for a few weeks or months usually won't be a problem, but for long-term storage I'd try to use only factory-sealed bottles, if possible. Less opportunity for contamination that way.
