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How long before Protein Bars go out of date?

how long before protein bars go out of date

Protein bars have become increasingly popular in recent years as a convenient and portable way to supplement one’s diet with protein. Whether you’re an athlete looking to support muscle growth and recovery, or simply someone on-the-go who wants a quick and satisfying snack, protein bars offer a convenient solution.

However, like all food, Protein Bars are no different in the fact that they too have an expiry date that you must be aware of. Luckily, Protein Bars are generally speaking a long-lasting food type and the vast majority can be stored for a very long time.

How long before Protein Bars are out of date?

The shelf life of protein bars can vary depending on several factors such as the ingredients used, the packaging, and storage conditions. Generally, most protein bars have a shelf life of 6 to 12 months if stored properly.

To determine the expiration date of a protein bar, it’s best to check the packaging for the “best by” or “use by” date. This date indicates the time period during which the manufacturer recommends consuming the product for optimal quality and safety.

protein bar expiry dates

What are the risks of eating out of date Protein Bars?

Consuming protein bars that are past their expiration date or have gone stale can pose several health risks. It doesn’t matter if you’re eating vegan protein bars, low sugar protein bars, or any other king. They’re all affected by expiry dates equally.Here are some of the potential risks:

  1. Spoilage: Over time, protein bars can become stale, rancid, or moldy, which can affect their taste, texture, and nutritional quality. Consuming spoiled protein bars can lead to food poisoning, digestive issues, and other health problems.
  2. Nutrient degradation: The nutritional content of protein bars can degrade over time, especially if they are exposed to heat, light, or moisture. Consuming protein bars that have lost their nutritional value can lead to nutrient deficiencies and other health issues.
  3. Allergic reactions: Some protein bars may contain allergens such as nuts, soy, or dairy, which can cause allergic reactions in some individuals. If a protein bar is past its expiration date, the risk of allergen contamination may increase.
  4. Foodborne illness: Eating out-of-date protein bars can increase the risk of foodborne illness, as harmful bacteria, viruses, and other pathogens can grow on the surface of the bars over time.

To avoid these risks, it’s important to check the expiration date on protein bars and dispose of any that are past their prime. Additionally, it’s essential to store protein bars in a cool, dry place to prevent spoilage and maintain their nutritional quality. This will help to ensure you’re getting all of the potential benefits of eating protein bars.

How to keep Protein Bars fresh for longer

There are a number of ways you can maximise how long Protein Bars will stay fresh, tasty and edible for. We’ve ordered these in a list below:

  • Store them in a cool, dry place: Heat and humidity can cause protein bars to spoil quickly, so it’s best to store them in a cool, dry place, such as a pantry or cupboard. Avoid storing them in areas that are exposed to direct sunlight, such as on a windowsill.
  • Keep them in their original packaging: Protein bars are usually packaged in sealed wrappers or pouches, which help to protect them from air and moisture. Keeping them in their original packaging can help to extend their shelf life and prevent them from going stale.
  • Don’t freeze them: While some foods can be frozen to extend their shelf life, freezing protein bars can cause them to lose their texture and flavor. Instead, store them at room temperature or in the refrigerator if you live in a warm, humid climate.
  • Avoid crushing or smashing them: Protein bars can easily become misshapen or crushed if they are tossed around in a bag or backpack. This can cause them to lose their texture and become less appetizing. To prevent this, store them in a sturdy container or wrap them in a paper towel before placing them in your bag.
  • Check the expiration date: Make sure to check the expiration date on protein bars before purchasing them, and consume them before the date listed on the packaging. This can help to ensure that you are consuming fresh, high-quality protein bars that are safe to eat.


  • Dr Jerry Brown

    Jerry has been a General Practitioner doctor in the UK now for over 10 years. He knows full well the impact a healthy diet can have on his clients. With more than 5 years worth of time spent studying diet optimisation and the role of protein in the body.