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5 Best Keto Pre-Workout Supplements (2021 Updated)

Supplements Considered 35
Hours of Research 183
of Research
Reviews Examined 35
Experts Interviewed 14
Tyler Sellers
Published by Tyler Sellers
Fact checked by Donald Christman, BHSc FACT CHECKED
Last updated: December 6, 2021

I’m a big fan of the keto diet and have seen some impressive results with several clients. But it’s one of those diets where you cannot just grab random performance supplement products off the shelf.

You simply cannot afford to mess up your ketosis.

Through some extensive product research and testing, we can now make pre-workout on keto diet a lot easier decision.

Let’s find out what the best keto pre-workout supplements on the market offer.

Our Top Keto-Friendly Pre-Workouts

1 - Onnit Shroom Tech Sport (Editor's Choice)

Onnit Shroom Tech Sport Product

Onnit Shroom Tech Sport is one of the most natural pre-workout supplement options we could find.

Based on herbs and mushrooms, it claims to boost exercise performance while also providing important vitamins, which is why many people consider it the best for ketogenic diet or any low-carb diet.

See our full Shroom Tech Sport review.

  • Suitable for daily use to improve general energy
  • Claims to boost your athletic performance at the gym with natural ingredients
  • Contains a strong dose of vitamin B12
  • Comes in easy to store capsules rather than a pre-workout drink
  • You need to take 4 capsules at least 45 minutes before training

Just keep in mind that this pre-workout comes in 4 capsules per dose, rather than a drink.

2 - Cellucor C4 Original Pre-Workout

Cellucor C4 Original Pre-Workout Supplement Product

If you’re looking for some increased blood flow for better pumps, then Cellucor C4 Original Pre-Workout seems to be a favorite with bodybuilders. It also has some added vitamins that may help with muscle recovery and repair.

The brand has a line of different health supplements that are considered to be some of the best in the market. Their claims and the online reviews back this up well.

  • Has zero carbs or calories to mess with your ketosis
  • A good dose of vitamins C and B12 for muscle performance
  • A moderate amount of caffeine may support mental clarity
  • Available in some tasty and refreshing flavors
  • Could be higher in creatine

This is perfect for keto dieters as it has zero carbs so it's a solid pre-workout.

While it does contain creatine, you may want to take an extra scoop of powder for a better dose.

3 - BPI Sports Ketogenic Pre-Workout

BPI Sports Ketogenic Pre-Workout Supplement

BPI doesn’t just claim to boost energy levels during your workout, but it also could be an option to increase your ketosis.

This could be a benefit, especially during the initial phase of the dreaded keto flu.

Just keep in mind that it’s not a good idea to take this pre-workout later in the day due to a strong caffeine dose.

  • Claims to help increase your levels of ketosis
  • Many reports about better focus and motivation
  • Zero calories from carbs and only 40 from fat
  • Nice flavors with blue lemon ice being very popular
  • Avoid taking later in the day due to a strong dose of caffeine

This pre-workout is best taken in the morning for that extra energy during your workout sessions.

4 - Sheer Strength Pre-Workout

Sheer Strength Pre-Workout Supplement

The name does suggest that it’s aim is to boost energy, and I did find many positive comments online.

Of all the keto pre-workouts we tried, this seemed to be one of the fastest working ones.

The only downside is that it’s not available in a large range of flavors.

  • Contains BHB salt to help raise ketone levels
  • Positive comments that it may work for weight loss
  • May start working in as little as 20 minutes
  • A moderate amount of caffeine for lower chances of jitters
  • Some more flavor options would be great

It is recommended to take this pre-workout 20 to 30 minutes before your training as it's considered one of the fastest working keto pre-workout supplements.

5 - Kinobody Octane Pre-Workout

Kinobody Octane Pre-Workout

Kinobody was a new one for me, and with no calories from carbs, it’s an obvious favorite for keto dieters.

Aside from the added energy this pre-workout claims to provide, you might also notice some added fat burning effects from the caffeine, which may be best if you’re looking to lose some weight with your workout routine.

  • Zero-calorie option to not mess up any part of your diet efforts
  • Added L-theanine may help with focus and mental performance
  • Contains natural caffeine to reduce jitters and crashes
  • Nice selection of fruity flavors
  • A larger tub and bulk discounts would be nice

While it does seem to work well, I couldn’t find bulk order options to save some money. However, you can take advantage of their 60-day money-back guarantee if you are unsatisfied for any reason.

Common Keto-Friendly Ingredients

Common Keto-Friendly Ingredients

There are plenty of pre-workout supplements that are heavily reliant on things other than essential amino acids. In many cases, the pre-workout powder is full of carbs, which makes them less than suitable for anyone on the ketogenic diet.

But what might actually work for you?

Here are a few things to look out for.

1 - Caffeine

Yes, caffeine may be an ideal ingredient as it could provide you with mental focus, motivation, and some fat burning effects, especially when coupled with an effective workout in the gym [1]. Just make sure you avoid those options that have a strong enough dose to keep you awake all night.

The best caffeine supplement we've found is from a brand called Nutricost.

You may want to get try a caffeine-free pre-workout if you're too sensitive to stimulants.

2 - L-Theanine

There have been several interesting studies that revealed that the effects of caffeine could be improved with theanine [2].

It tends to make you less jittery while still giving you a mental boost.

Even if you’re not on keto, this ingredient is the one to look for in your pre-workout when you don’t like excessive caffeine stimulation.

The best L-Theanine supplement we've found is from a brand called Nature's Trove.

3 - Creatine

One very extensive study has revealed that strength and endurance may improve during resistance training through creatine supplementation [3]. I would go as far as saying that it’s possibly one of the most suitable and keto-friendly pre-workout ingredients.

Research has shown that supplementing with creatine can increase muscle mass and improve strength when a person combines it with strength training.
Miho Hatanaka, Registered Dietitian

The best creatine supplement we've found is from a brand called Transparent Labs.

If you're trying to avoid creatine, you can get yourself a creatine-free pre-workout supplement.

4 - BHB Salts

My dietitian pointed me towards some interesting articles, and she mentioned that she recommends BHB salts to clients starting out on ketogenic diet. However, it may also help with better exercise performance in the gym [4].

The best BHB salts we've found is from a brand called Vitamin Bounty.

5 - Vitamins C and B12

While vitamins may not play a direct role in strength and endurance, there is plenty of evidence that they help maintain lean muscle mass as well as exercise recovery [5]. It’s certainly not something to be ignored, especially during an intense workout.

Here is the best vitamin C and the best vitamin B12 supplements we've found.

Let me guess what your next question is.

Benefits Of Keto Pre-Workouts

The benefits of a keto pre-workout go beyond energy, endurance, and a boost in muscle or workout performance. See, the above ingredients are also commonly associated with the ability to burn fat to release more ketones.

This is especially interesting to anyone trying to lose weight or gain more muscle definition through a cutting phase.

But there is also the aspect of improved blood flow, which has several effects. First of all, it will deliver more oxygen and ketones throughout your body, which helps with strength levels. But it could also get you those improved pumps, which helps to show off all your hard work.

Here's a great video on a DIY keto pre-workout drink:


Potential Side Effects


Pre-workout side effects are pretty rare when it comes to keto products, and in most cases, it may come down to allergies or people taking too much of a product in one go.

While they are generally suitable for taking over longer periods of time, you should avoid taking huge doses of pre-workout. The reason is that some of the fat burning ingredients, including certain types of protein, may be more difficult to digest.

Even though you may be used to higher doses on the ketogenic diet, you could still be facing some stomach upset.

Also, keep an eye on your caffeine intake to avoid jitters and insomnia.

Pre-Workout Tips

There are 3 things that I always preach to my clients, and they are based on the great advice I received from dietitians over the years.

1 - Getting The Timing Right

You want to ensure that you get your timing right so that you get the best results. Start by taking the pre-workout 30 minutes before exercise, and if you start feeling the effects before you begin your workout, then simply adjust the time next time around.

2 - Take The Right Dose, Not The Maximum One

Too many folks I’ve worked with saw some great results within a few trial routines only to think that taking larger doses helps even more. The problem is that there will be a plateau where you won’t perform better, and this approach might actually make you sick.

3 - Stack With Other Supplements

Don’t stop with a pre-workout supplement. You could be much better off also investing in some products with keto-friendly fat burning ingredients. This may help boost your levels of ketones, and at the same time, might get you to weight loss goals faster.



Is it safe to use keto pre-workout supplements?

Yes, it is safe to use keto pre-workout supplements, and in many cases, it could actually support your ketosis. Especially in the early days of keto, some of these dietary supplements might provide metabolic support and ketones to overcome the keto flu.


How long does keto pre-workout last?

The best keto pre-workout usually last for up to 4 hours. This will depend on your body’s ability to digest the ingredients as well as how tough your exercise routine is.

Does keto pre-workout make you gain weight?

No, keto pre-workout doesn’t make you gain weight, as it generally does not contain enough calories from carbs and sugar. It’s far more likely to help remove some stubborn love handles.

To be sure, choose a pre-workout that has no added sugars, flavors, or additives.

Does keto pre-workout build muscle?

Yes, keto pre-workout may support building muscles as it often contains ingredients that boost workout performance. The best keto pre-workout also have the necessary substances to support actual protein synthesis in muscles.

From all the testing our team has done, and after reading through literally thousands of reviews, we’ve come to the conclusion that the best pre-workout for keto dieters is Onnit Shroom.

Between the natural ingredients, and basically no side effects, all of our clients showed positive results.

Definitely order a tub ready for your next workout session, and make sure you let us know on social media what your before and after experience was.

Our #1 Keto Pre-Workout Supplement

Onnit Shroom Tech Sport

Onnit Shroom Tech Sport Product
N/A (Capsule)
Ingredient Quality
Overall Score 4.9
  • Suitable for daily use to improve general energy
  • Claims to boost your athletic performance at the gym with natural ingredients
  • Contains a strong dose of vitamin B12
  • Comes in easy to store capsules rather than a pre-workout drink
  • You need to take 4 capsules at least 45 minutes before training

About the author

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10 thoughts on “The Best Keto Pre-Workout Supplement
Low-Carb Friendly Drinks

  1. I’ve been following Kinobody’s YouTube channel for a while now and love his approach on living a healthy life. I was on the fence about trying Octane but after reading all the reviews I knew it was worth a shot. The first time I took it, I noticed an instant boost of energy and focus.

  2. I’ve been taking BPI Sports for about a year now. It is the best keto pre-workout supplement I have found. I can see the benefits immediately after having it. The energy & focus are fantastic, and the mental clarity is something you only find in keto supplements. I would recommend this to anyone who needs energy without all the jitters.

  3. As a fitness professional, it’s important to me that I know what I’m putting into my body. This is why I use Kinobody Octane for all of my workouts. Octane has the best fat-burning ingredients out there and doesn’t leave me feeling jittery like other products do. Plus, it tastes amazing!

  4. I’ve tried tons of pre-workouts in the past, but nothing compares to BPI Sports’ Keto Pre-Workout. It is hands down the best keto pre-workout out on the market right now. It doesn’t crash my system like some other brands and I can feel it all day.

  5. I have been using Onnit Shroom for months now. I was using other keto supplements but they don’t do anything for me anymore. Onnit Shroom is the best pre-workout supplement I have ever taken. It gives me energy, it clears up brain fog, and it helps with my workouts.

  6. I am absolutely in love with Onnit Shroom. I recently went on a Keto diet and was looking for a product to help me get through my workouts and help me feel energized. I tried tons of different products and they all tasted really bad or didn’t work at all.

  7. I’m new to keto and have just returned from a fasting heavy leg workout that I began after my summer trim and endured. I’ll definitely give these keto pre-workout supplements a shot!

  8. THANK YOU SO MUCH! I’m new to keto and have just returned from a fasted heavy leg workout that I resumed after my summer cut and endured. I’ll definitely give these a shot! Is c4 pre workout keto friendly? You definitely answered my question. Turns out, it is a great all-around pre-workout (it contains 150mg caffeine for an energy boost, a small amount of creatine (1g) per scoop, and some other ingredients that are said to promote a good workout or muscle building, such as Beta-Alanine, Arginine, and Theacrine).

  9. Sheer Strength is by far the best Keto friendly pre-workout supplement. If you’re looking for a product with zero carbs and sugar, this is it. The low-carb options are great and there is no crash after you’ve taken it! I’m so glad I found this company because of their keto friendly drinks, which are also very tasty!

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