After opening, how long is the almond milk safe to drink? September 08, 2020 00:36 Updated The Organic Protein Almond Milk should be consumed within 2 hours of opening if it is not refrigerated. After opening and if refrigerated, they should be consumed within 7 days. Related articles After mixing powder with liquid, how long is the mixed shake or smoothie safe to drink? After opening, how long is a ready-to-drink shake safe to drink? What is the shelf life of Orgain ready-to-drink shakes? How should I store the Orgain protein powder? Does Orgain use milk or dairy?