The shelf life of yogurt is only 2 1 day. If you are overdue, you'd better not drink it. Some people's physical yogurt has a shelf life of only 2 1 day. If you are overdue, you'd better not drink it. Some people's physical immunity is relatively low, so it's worthwhile to have gastrointestinal reactions after drinking it. You can also water flowers with expired yogurt, or make a face. It's best not to drink it.