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Can Pre-Workout Go Bad? 4 Tips for a Longer Shelf Life

Tyler Sellers
Published by Tyler Sellers | Senior Coach
Last updated: August 8, 2023
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Pre workout supplements have an expiry date labeled on the container. This expiry date usually varies depending on the manufacturing date. However, there can lead to the expiry of your supplements. Expired pre workouts pose serious health challenges to consumers.

Here, I will guide you through how pre workouts go bad and give you tips on how to store your supplements. I will also furnish you with quick tips on how to identify if your pre workouts have gone bad.

Quick Summary

  • Pre-workout can go bad, depending on the expiry date and how you store them.
  • It’s not safe to drink a pre-workout after the expiration date because of harmful side effects.
  • Once you mix pre-workout, you should drink it within 12 hours to avoid contamination. 
  • A foul smell is an indication that your pre-workouts have expired.

Is It Safe To Drink Pre-Workout After the Expiration Date?

No, it is not safe to drink pre-workout after its expiration date. You could experience some pretty unpleasant side effects, such as a gurgling stomach and severe gas.

Most supplement companies will also have clear guidelines printed on the label that warns about not exceeding the use-by-date for this very problem.

But you also need to consider how long a tub is open for if you want to avoid ingredients becoming ineffective.


Does the Pre-Workout Go Bad Faster Once The Container Is Open?

out of container medicine

Yes, a pre-workout powder will generally expire faster once the container is open. With some pre-workouts, this could mean using it up within eight weeks, which is quite a short period.

Other products will be suitable for 3 to 4 months, but I advise my clients not to exceed three months.

The problem is that while some pre-workout ingredients like B vitamins and minerals may last a long time, amino acids tend to start breaking down with age. Take BCAA in pre-workouts, for example. The pre-workout lose potency once the amino acids are gone.

Problems can also appear based on how the product is stored, and I’ll get to some tips for that below.

The USDA says products containing a use-by date may still be safe after that date, but it may not be of acceptable quality. To help preserve the quality, always store protein powder in the container it comes in.
- Sara Lindberg, Health and fitness writer

How Long Can You Use Mixed Pre-Workouts?

Once mixed, you can use a pre-workout within 12 hours, as long as it's not exposed to severe temperature fluctuations.

Taking it at least 30 minutes before gym time is ideal even if you've mixed it a few hours prior, especially if you're taking the pre-workout supplement for better pumps during your workout.

Leaving it too mixed for too long could cause a breakdown in the protein structure[1], which could lead to lower energy levels and exercise performance, along with other potential adverse effects.

It's another problem some people encounter, especially if they mix a pre-workout supplement in the morning before they leave the house, but don't plan to drink it until later.

Pre-workout supplements that are mixed can lose their effectiveness and taste over time.

Therefore, consuming the mixture within the first 12 hours is recommended to ensure maximum benefits.

Storing the mixed pre-workout in a cool and dry place can help maintain its quality.

Remember, for the best results, follow the instructions on the pre-workout supplement packaging and prioritize freshness for optimal performance during your workouts.

Also read: Best Pre-Workout for Women

How Do You Know If Your Pre-Workout Go Bad?

man holding medicine

You know your pre-workouts has gone bad if it starts to smell, clump, and mold. We discuss each sign in more detail below.

1 - Smell

Make sure you’re familiar with the normal smell of your pre-workout supplement products when you first open the tubs. If it starts to have a foul or stale smell, then that could be an indication that it's past the expiration date.

2 - Clumpy

This is one of the biggest problems that you can encounter with all pre-workout supplement products. Once the vacuum seal is broken, moisture is likely to get into the container, and this will start to make the fine powder rather clumpy and hasten the expiration date.

This does not mean that pre-workout is 100% gone bad. You can check our guide on how to fix clumpy pre-workout.

3 - Doesn’t Mix

Another good indicator that your pre-workout supplement is no longer good is when it doesn’t mix easily. In most cases, you can just use a shaker, but if you suddenly find that the powder remains unmixed with a chalky texture, then it could be time to get rid of it.

4 - Mold

This would be a very obvious sign that something is wrong with your pre-workout, and is most often the result of not storing products correctly and allowing them to get damp. Always get rid of moldy pre-workout powder as you could get some pretty nasty food poisoning from it.

Tips For Avoiding It From Going Bad Too Soon

Over the years, I’ve been able to get some great tips from colleagues and clients about how you can make sure your pre-workout supplements don’t go bad before the expiration date.

Here's how to keep pre-workout supplements fresh and effective until you're ready to use them by following these 4 tips I would give you:

1 - Tighten The Seal

With pre-workout tubs that have screw-on tops, it’s important to make sure that you tightly fasten the top. Avoid the thread misaligning as this could result in air and moisture getting in.

For the resealable bags, always push out any air before sealing it and then check that the bag is fully closed.

2 - Store In The Right Place

Avoid keeping the pre-workouts out in the open, especially where they can be exposed to direct sunlight. This may cause significant temperature fluctuations that could reduce effectiveness.

3 - Keep It Cool

If you have space in your refrigerator, then that’s where the pre-workout should be stored. It’s cold and dark, which may reduce it from spoiling prematurely [2].

4 - Buy The Right Size

I know how tempting it is to get a great deal on those mega pre-workout tubs. But unless you have a pretty hardcore workout regimen, you could end up with a pre-workout tub that is open for a very long time. Just buy products that will get you through about 2 to 3 months.

Post you may likeCan You Take Pre-workout on a Plane? 


powder on spoon

Is clumpy pre-workout bad?

Yes, a clumpy pre-workout can be bad in some cases because it may be an indication that it’s past its usable date. But if it’s still within the shelf life, you may just need to use a blender to get rid of the lumpy texture.

How do you unclump pre-workout?

You can unclump pre-workout by slowly heating it to reduce the moisture. However, this could impact the effectiveness, so the best option would be to use a blender rather than a shaker.

Can you keep pre-workout in the fridge?

Yes, you can keep pre-workout in the fridge. It’s actually one of the best places to store it. Because it’s cold and dark, it may significantly reduce the risk of moisture and molding.

Can you mix pre-workout early?

Yes, you can mix pre-workout early, but I would avoid doing so more than 12 hours before you plan to drink it. Also, ensure that it remains at the same temperature for that time to avoid losing its effectiveness.

For more information on when to take your pre-workout, read our blog.

Make Sure You Check Your Supplements Regularly

Now that you know what to look out for, you may opt to invest in high-quality pre-workout supplements and make sure to regularly check it, especially if you’re not taking them on a daily basis.

I also suggest that you use a marker and write the date you opened them so that you avoid keeping them for longer than 3 months.

If you have some other pre-workout tips you’d like to share, then head over to one of our social media pages and leave a comment.


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3 thoughts on “Does Pre Workout Expire?
How to Fix It When It’s Clumpy & Hard

  1. How to unclump pre-workout is made easy with this informative piece! Thanks!

  2. Can I consume pre workout vaporx5 next gen after expiry date March 21 2020 from muscle tech it’s dry doesn’t smell and not clumpy

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