Drinking moldy apple juice may cause a mild upset stomach or intestinal discomfort. Juice that has mold or has changed color should be discarded.
Bottled apple juice has a shelf life of 2 to 3 months after its printed best by date. Unopened canned apple juice is safe to consume 6 to 9 months after the printed date.
Freshly squeezed apple juice should not be kept in the refrigerator for more than 7 to 10 days. Juice with higher sugar content typically has a longer shelf life.
Drinking unpasteurized apple juice poses a risk of food poisoning. Pasteurization is used to kill harmful bacteria in juices and milk, and therefore, unpasteurized apple juice can go bad sooner than its counterpart.