Protein powder has a shelf life and can expire, typically ranging from 12 to 24 months after the date of manufacture. The exact shelf life of protein powder can vary depending on the type of protein and the storage conditions.
To determine if your protein powder has expired, check the expiration date printed on the package. If the powder has a strong, rancid or off odor, or if there are signs of spoilage, such as discoloration or clumping, it may be best to discard it.
Proper storage can help extend the shelf life of protein powder. Store the powder in a cool, dry place, away from direct sunlight and heat. If possible, keep the lid tightly sealed to prevent moisture from entering the container. If you have opened the container, consider transferring the powder to an airtight container to protect it from oxidation and spoilage.