How long can a protein shake last in the fridge?

How long can a protein shake last in the fridge?


Protein shakes have become a popular choice for individuals looking to supplement their protein intake, whether for fitness purposes or as a convenient meal replacement. However, it’s essential to know how long a protein shake can last in the fridge to ensure its safety and effectiveness. In this article, we will explore the factors that influence the shelf life of a protein shake and provide guidelines for storing it properly.

Factors Affecting the Shelf Life of Protein Shakes

Ingredients: The ingredients used in a protein shake can significantly impact its shelf life. Protein powders, especially those made from animal sources, may have a shorter shelf life compared to plant-based protein powders. Additionally, the presence of other perishable ingredients like milk or yogurt can also affect the overall longevity of the shake.

Storage Temperature: The temperature at which a protein shake is stored plays a crucial role in determining its shelf life. Refrigeration is essential to slow down the growth of bacteria and other microorganisms that can spoil the shake. It is recommended to store protein shakes at a temperature below 40°F (4°C) to maintain their quality and safety.

Contamination: Proper handling and avoiding contamination are vital to ensure the longevity of a protein shake. Using clean utensils, sealing the container tightly, and avoiding cross-contamination with other foods can help prevent the growth of harmful bacteria and extend the shelf life of the shake.

Shelf Life of Protein Shakes

The shelf life of a protein shake can vary depending on the factors mentioned above. Generally, a properly stored protein shake can last anywhere from 1 to 5 days in the refrigerator. However, it is crucial to note that this is a guideline, and the actual shelf life may vary based on the specific brand, ingredients, and storage conditions.

If your protein shake contains perishable ingredients like milk or yogurt, it is advisable to consume it within 1-2 days. On the other hand, protein shakes made with water or non-perishable ingredients like plant-based protein powders can last up to 5 days when refrigerated properly.

It is important to pay attention to any changes in the appearance, smell, or taste of the protein shake. If you notice any signs of spoilage, such as a foul odor or unusual texture, it is best to discard the shake to avoid any potential health risks.

Tips for Storing Protein Shakes

To maximize the shelf life of your protein shake, consider the following tips for proper storage:

1. Use airtight containers: Transfer your protein shake into a clean, airtight container to prevent exposure to air and potential contaminants.

2. Refrigerate promptly: After preparing your protein shake, refrigerate it promptly to slow down bacterial growth and maintain its freshness.

3. Avoid temperature fluctuations: Keep your protein shake stored at a consistent temperature. Avoid leaving it out at room temperature for extended periods or exposing it to temperature fluctuations, as this can shorten its shelf life.

4. Shake well before consuming: Before drinking your protein shake, give it a good shake to ensure that any settled ingredients are properly mixed.


In conclusion, the shelf life of a protein shake in the fridge can range from 1 to 5 days, depending on various factors such as ingredients, storage temperature, and contamination. It is crucial to store protein shakes properly in airtight containers, refrigerate them promptly, and consume them within the recommended timeframe to maintain their quality and safety. Always check for any signs of spoilage before consuming a protein shake.


– Mayo Clinic:
– Healthline: