How long is grapefruit juice good after the expiration date?

Grapefruit juice typically has a "best by" date rather than an expiration date. Generally, it maintains its peak flavor and freshness for roughly 7-10 days past the "best by" date when unopened and properly refrigerated (below 41°F / 5°C).

Remember that refrigeration significantly affects grapefruit juice longevity. Once you refrigerate an opened bottle, its quality should remain optimal for three to five days.

Before consuming grapefruit juice beyond the "best by" date, always use your judgment—look, smell, and taste a small amount, and don't consume it if there are any noticeable changes in quality, such as color modifications, an off odor, or a different taste. It's advisable to discard the juice when in doubt.