Does Pre-Workout Expire? A Must-Read Before Consuming

Fact Checked

Tonya McIntosh

Tonya McIntosh—The main person behind TGFFitness as its Founder and Chief Editor. Get to know more about Tonya


As someone who regularly takes pre-workout supplements, I have often wondered about their expiration dates. Does pre-workout expire?

Yes, pre-workout does expire. Most pre-workouts have a shelf life of about two years, but this can vary depending on the specific product and its ingredients. When pre-workout expires, the ingredients can break down and lose their potency, leading to a less effective workout and even potential health risks if consumed past the expiration date.

Let’s dive deeper into this crucial topic.

Does Pre-Workout Expire?

The short answer is yes; pre-workout does expire. However, the shelf life of pre-workout can vary depending on the brand, ingredients, and storage conditions.

Most pre-workout supplements come with an expiration date, which is typically two to three years from the manufacturing date. 

It is essential to check the expiration date before using pre-workout to ensure it is still potent and safe to consume. Using expired pre-workout can lead to adverse side effects, such as nausea, vomiting, and diarrhea.

How to Tell if Your Pre-Workout Has Expired

Pre-workout supplements are great, but as someone who has used them for years, I can tell you that it’s crucial to check the expiration date to ensure it hasn’t gone bad.

Here are some signs that your pre-workout may have expired:


Smelling it is one of the easiest ways to tell if your pre-workout has expired. It has likely gone bad if it has a strange or off-putting smell.


Another sign that your pre-workout may have expired is if it is clumpy. If the powder has clumped together, it may be a sign that it has been exposed to moisture or has gone bad.

Doesn’t Mix

If your pre-workout doesn’t mix well, it may be a sign that it has expired. Expired pre-workout may become clumpy or sticky, making it difficult to mix with water.


If you notice any mold in your pre-workout, it’s a clear sign that it has expired. Mold can grow on expired pre-workout, and consuming it can be dangerous to your health.

Date On the Label

Always check the expiration date on the label of your pre-workout. If it has passed the expiration date, it’s best to throw it away and purchase a new one.


If the color of your pre-workout has changed, it may be a sign that it has expired. Expired pre-workout may change color due to exposure to moisture or other factors.


If your pre-workout tastes off or has a strange flavor, it may be a sign it has gone bad. An expired pre-workout supplement may taste bitter or sour, making it dangerous to consume.

Upset Stomach

If you experience an upset stomach after consuming your pre-workout, it may be a sign that it has expired. Expired pre-workout can cause stomach upset, nausea, and other digestive issues.

Performance Decrease

If you notice a decrease in performance after consuming your pre-workout, it may be a sign that it has expired. Expired pre-workout may not be as effective as fresh pre-workout, which is why it is harmful to consume it.

What Happens When You Consume Expired Pre-Workout?

Consuming expired pre-workout can negatively affect your body and workout performance.

When pre-workouts expire, they lose their potency and effectiveness. The ingredients responsible for the energy boost, focus, and kick-in effect start to break down, leading to decreased performance. The pre-workout may not give you the desired boost that you need for your workout session.

Consuming expired pre-workout can also pose some health risks. The most common side effects of consuming expired pre-workout are headaches, vomiting, diarrhea, and upset stomach. In some cases, it can even lead to food poisoning.

How to Keep Pre-Workout From Going Bad

As a long-time user of pre-workout supplements, I’ve learned that they can expire much sooner if not stored properly.

Here are some tips to keep your pre-workout fresh and effective:

1. Don’t Unseal It Until You’re Ready To Use It

The clock starts ticking once you break the seal on your pre-workout tub. Oxygen and moisture can start to degrade the ingredients, so it’s best to keep the seal intact until you’re ready to use it.

2. Close The Lid Tight

After you’ve taken your pre-workout, make sure to close the lid tightly. This will help keep air and moisture out of the tub.

3. Store In a Cool Place

Pre-workout should be stored in a cool, dry place. Avoid storing it in direct sunlight or in a warm area, as heat can also degrade the ingredients.

4. Keep Away from Moisture

Moisture is the enemy of pre-workout. Keep the tub away from any sources of water or humidity.

5. Leave the Desiccant Packet in The Tub

Most pre-workout supplements come with a desiccant packet to help absorb any moisture that may get into the tub. Leave this packet in the tub to help keep the contents dry.

6. Mix Up the Contents

Before each use, give the tub a good shake to mix up the contents. This will help ensure that all of the ingredients are evenly distributed.

7. Work Out and Use It!

Using it is the best way to keep your pre-workout from going bad! Make sure to work out regularly and use your pre-workout as directed.

8. Buy The Right Size

Finally, consider buying smaller pre-workouts if you don’t use them often. This will help ensure that you use it up before it goes bad.

Does pre-workout go bad after mixing?

Pre-workout supplements usually come in powder form that you mix with water before drinking. Once you mix the powder with water, it starts to break down and lose its potency. The longer you let it sit, the less effective it becomes.

In general, pre-workout supplements should be consumed within 24 hours after mixing. After that, the supplement may start to lose its effectiveness.

If you mix a pre-workout supplement and don’t consume it right away, it’s best to discard it and mix a fresh batch when you’re ready to drink it.

How long do you have to use a pre-workout that’s already mixed?

If the pre-workout is still within its expiration date, you can usually use it for up to 24 hours after it has been mixed. That being said, it’s important to note that some pre-workout supplements may lose their effectiveness over time, even if they haven’t technically expired.

To ensure your pre-workout is still effective, give it a quick sniff and taste test before consuming it. If it smells or tastes off, it’s best to err on the side of caution and not consume it.

It’s also important to remember that pre-workout supplements can be sensitive to heat and light, which can cause them to degrade more quickly.

So, store your pre-workout in a cool, dry place away from direct sunlight.

When should you take pre-workout?

I have found that the timing of when you take it can significantly impact its effectiveness. Below are a few things to keep in mind when deciding when to take your pre-workout supplement:

Before your workout

Pre-workout supplements are designed to boost energy and improve your focus during your workout. For this reason, it’s best to take your pre-workout supplement 15-30 minutes before you start exercising. This will give your body enough time to absorb the supplement and start feeling its effects.

On an empty stomach

Taking pre-workout on an empty stomach can help maximize its effectiveness. When you take pre-workout on an empty stomach, your body will absorb it more quickly, which means you’ll start feeling its effects sooner.

If you plan to take your pre-workout on an empty stomach, drink plenty of water to avoid any stomach discomfort.

With food

If you find that taking pre-workout on an empty stomach doesn’t agree with you, you can also take it with food. However, keep in mind that taking a pre-workout with food may slow down its absorption, which means you may not feel its effects as quickly.

During long workouts

If you’re planning to do a long workout, you may want to consider taking a second dose of pre-workout halfway through your workout. This can help give you an additional energy boost and help you power through the rest of your workout.

Avoid taking it before bedtime

Pre-workout supplements contain caffeine and other stimulants that can interfere with your sleep. For this reason, it’s best to avoid taking pre-workout within a few hours of bedtime.

If you do take pre-workout later in the day, make sure to choose a supplement that has a lower caffeine content.

Is it safe to use clumpy pre-workout?

When it comes to using pre-workout supplements, it’s important to know that clumping is a common issue.

This can happen due to moisture, exposure to air, or simply due to the passage of time. But the question is, is it safe to use clumpy pre-workout?

As someone who has been using pre-workout supplements for years, I can say that clumping is not always a sign of spoilage or expiration.

However, it is important to note that clumps can contain a higher concentration of active ingredients, which can lead to an uneven dosage.

Therefore, it’s important to ensure that the clumps are broken up and mixed evenly before consuming the supplement.

Why does pre-workout go lumpy in the first place?

When you open your pre-workout supplement, you may sometimes notice it is forming into lumps or clumps. This can be a common problem, and a few factors can cause it.

Firstly, pre-workout supplements often contain hygroscopic ingredients, which attract and retain moisture from the air. When the moisture in the air comes into contact with the powder, it can cause the powder to clump together and form lumps.

Secondly, pre-workout supplements can also go lumpy if exposed to heat or humidity. Storing your pre-workout supplement in a warm or humid environment can cause the powder to clump together and form lumps.

Lastly, Leaving your pre-workout supplement open for too long can allow moisture to enter the container and cause the powder to clump together.

How do you unclump pre-workout?

When the pre-workout powder is exposed to moisture or air, it can become clumpy and difficult to mix. Here are three simple steps to unclump your pre-workout powder:

Step 1: Shake It

Give the container a good shake to break up any formed clumps. This will help to distribute the moisture evenly throughout the powder.

Step 2: Break It

If shaking alone doesn’t do the trick, try breaking up the clumps with a utensil or your fingers. Before doing this, wash your hands to avoid contaminating the powder.

Step 3: Blend It

Try blending the powder if shaking and breaking up the clumps don’t work. You can use a blender, a food processor, or even a coffee grinder.

Just be sure to clean the appliance thoroughly before and after use to avoid cross-contamination.

How do you keep pre-workout from clumping?

I have experienced the frustration of opening a tub of pre-workout only to find it clumped together. Here are some tips to prevent your pre-workout from clumping:

1. Make sure it is sealed tightly

The first step to preventing clumping is to ensure the tub is sealed tightly after each use. If air gets into the tub, it can cause the powder to clump together.

2. Store correctly

It is also important to store your pre-workout correctly. Keep it in a cool, dry place, away from moisture and direct sunlight.

3. Don’t allow water to get into the tub

Water is the enemy of pre-workout powder. Ensure to keep the tub away from any moisture, including condensation from the refrigerator.

4. Don’t open the tub until you’re ready to start using it

Opening the tub before you’re ready to use it can introduce air and moisture, causing the powder to clump together.

5. Leave the silica packet in the tub

Most pre-workout supplements come with a silica packet to absorb moisture. Leave this packet in the tub to help keep the powder dry.

6. Regularly stir or shake the tub

Even if you follow all of the above steps, your pre-workout powder may still clump together over time. Regularly stirring or shaking the tub can help to break up any clumps and keep the powder loose.


After years of buying and taking pre-workout supplements, I can confidently say that pre-workout supplements do have an expiration date.

While the exact expiration date may vary depending on the specific product and brand, using the supplement within 1-2 years of the manufacturing date is typically recommended.

Using expired pre-workout supplements can potentially be harmful to your health as the ingredients may have degraded over time, leading to reduced effectiveness or even negative side effects.

NOTE: It is important to always check the expiration date before consuming any pre-workout supplement and to dispose of any expired products properly.

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Chief Editor
Tonya McIntosh

Hello there! My name is Tonya McIntosh, and I’m the Founder and Chief Editor of TGFFitness. I’m also a NASM-certified Nutrition Coach and Personal Trainer. With eight years of experience under my belt, I’ve found that one of the most common issues my clients struggle with is remaining consistent.

Finding your main motivator to keep going is easier said than done for Keep Reading.

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