Evidence Based Research
Evidence Based Research
This article was written by one of our qualified writers, and fact-checked by our experts. The numbers in parentheses (e.g. 1, 2, 3, etc.) throughout the article, are reference links to peer-reviewed studies.
Our team of experts include a board-certified physician, nutritionists, dietitians, certified personal trainers, strength training experts, and exercise specialists.

11 Strongest Pre Workout Supplements for Hardcore Pump (Updated 2021)

Check out these extremely potent pre-workouts!

We select products we think are useful for our readers. We may earn money when you click on links on this page. View our disclosure for more details.

We tested and ranked the 11 best strongest Pre workouts supplement for those who need an extra kick before their gym session. 

There are different tiers of “butt kicking” power when it comes to these products and today, we’re only discussing the strongest pre-workouts on the market.

Common pre-workout ingredients that work synergistically to make a pre-workout effective include caffeine, creatine, beta-alanine, amino acids, and nitric oxide compounds. And they work very well together. 

Strong Pre-workouts Ranked:

  1. 4 Gauge Pre-Workout – Buy here   Editor’s Choice 
  2. BULK Pre-WorkoutBuy here   Overall BEST 
  3. Ronnie Coleman Yeah Buddy Buy here
  4. Mr. Hyde NitroX Pre-Workout Buy here
  5. Koala Freak Pre-Workout Buy here
  6. Legion Pulse Pre-workout Buy here
  7. Vapor 1 Pre-workoutBuy here
  8. BSN Endorush Buy here
  9. Science Pre Jym Buy here
  10. Wreckage Pre-Workout Buy here
  11. Powher Pre-Workout – Buy here   For Women 

Pre-workout Benefits and Ingredients

According to research, multi-ingredient pre-workout supplements are very beneficial for aiding in performance. And the following ingredients are really all you need. (1, 2)

Any other added ingredients may be beneficial but these should be the core of an effective pre-workout supplement.


Caffeine is a nervous system stimulant and it’s the main ingredient responsible for the acute ergogenic effects we get from pre-workout supplements. It’s been proven to significantly improve performance during resistance training and endurance training.

But, it’s most effective when taken in dosages of 3 and 6 mg/kg body weight. Caffeine’s effects kick in within 30-60 minutes of ingestion. An effective dose for each individual varies depending on various factors including body weight, prior caffeine usage or tolerance, and activity of choice (1).


Creatine is an amino acid that is a beast at what it does for enhancing performance. Just 5 grams per day can noticeably improve strength and even muscle size. (1, 3)

Creatine has been studied for many years and its effects are proven.


BCAAs, also known as Branched-Chain Amino Acids (Leucine, valine, and isoleucine) are the building blocks of protein. And they are added to many pre-workout supplements.

These amino acids have shown to reduce exercise-induced muscle damage and Leucine is the most prominent BCAA when it comes to enhancing muscle protein synthesis or the building of proteins. (4, 5)

Nitric Oxide agents

Nitric oxide increases blood flow to muscles. Arginine and citrulline come to mind when talking about vasodilators that help open the blood cells so oxygen can get in. 6-8 grams per day is a minimum recommended dosage. But, higher doses can be very beneficial too. (1)


Beta-alanine is a precursor to carnosine which has been shown to increase high-intensity performance. So, beta-alanine is an important ingredient in a multi-ingredient pre-workout supplement. (1)


Betaine (trimethylglycine) is an effective substance that can increase nitric oxide levels and creatine synthesis. Its effects on performance have been studied and when consumed in generous doses, it can increase training volume or workload. (1)

Top Strongest Pre Workout Supplements (High Stimulant)

Warning: Do not try these supplements unless you have built up a tolerance to higher caffeine doses and other potent stimulants contained in the following pre-workouts!

Jumping straight into such powerful substances can cause some serious side effects. Severe nausea, dizziness, abnormal heart rate, headaches, anxiety are among the undesirable effects typically experienced with caffeine especially. (6)

NEVER exceed the recommended dosages!

1. 4 Gauge

4 Gauge Pre Workout
4 Gauge Pre Workout

4 Gauge is made by Roar Ambition and its unique shotgun shell bottle makes it stand out from other options on the market. Make no mistake though, it’s a potent formula despite containing just 150mg caffeine per serving which may be considered low for some.

The caffeine works synergistically with the 200mg L-theanine to enhance and prolong mental performance. 

Then you have a low dose of creatine to support muscle growth, increased strength, improved performance, and brain health. L-citrulline gives massive pumps while carnitine fights fatigue, and Rhodiola Rosea improves many factors of performance. Not to mention, there are a few more effective ingredients as well. 

4 Gauge is made from natural sources and is a safe and perfectly-potent formula.  

Caffeine: 150mg caffeine

5% OFF

4 Gauge Pre-Workout Review

4 Gauge is safest and one of the strongest pre-workout on the market. Each serving contains 150mg caffeine plus 200mg L-theanine combined as "Smart caffeine," 6g citrulline for pumps, carnitine for fighting fatigue and Rhodiola Rosea for all-around performance.

Read our complete review of 4 Gauge Pre-Workout!

2. Transparent Labs BULK Pre-Workout

Transparent Labs Bulk
Transparent Labs Bulk

Transparent Labs BULK is not the strongest but overall The Best in class pre-workout supplement available. BULK pre-workout is designed to support muscle growth and performance, while still providing an energy boost to help you power through the toughest sessions.

BULK is designed to help you recover better with a nice dose of BCAAs and many other suitable ingredients. This all comes from a company that focuses on creating products that are fully transparent.

Caffeine: 180 mg Caffeine Anhydrous

Save NOw

BULK Pre-Workout Coupon

The Transparent Labs BULK Pre-Workout is designed to help you recover better with a nice dose of BCAAs and many other suitable ingredients. This all comes from a company that focuses on creating products that are fully transparent.

Read our complete review of Transparent Labs BULK!

3. Ronnie Coleman Signature Series Yeah Buddy

Ronnie Coleman Signature Series Yeah Buddy
Ronnie Coleman Signature Series Yeah Buddy

The eight-time Mr. Olympia Coleman Coleman has his own line of supplements and his pre-workout is no joke!

This could be the most powerful pre-workout out there right now and extra precaution must be taken.

Now, 420mg of caffeine is crazy and only reserved for the most advanced lifters with a high caffeine tolerance. So, this is not a beginner’s powder. There’s also 4,000g of L-citrulline, and 2,000mg for beta-alanine for improved performance.

Take half a scoop or less and build up because this is a very powerful pre-workout.

Pricing: $30 for 30 servings

Caffeine: 420mg per serving

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Ronnie Coleman Yeah Buddy Coupon

Yeah Buddy Ronnie Coleman Signature Series Pre-Workout comes with TeaCrine & Dynamine for the most powerful mood & focus combo available using the newest energy to enhance physical and mental performance.


4. ProSupps Mr. Hyde NitroX Pre-Workout

Prosupps Mr Hyde Nitrox Pre Workout
Prosupps Mr Hyde Nitrox Pre Workout

This is a powerful supplement that claims to provide 2x the energy as competitors. With 375mg caffeine, plus beta-alanine and creatine HCL, you can really take your training to another universe.

Additional effective ingredients include arginine (Nitrosigine) and L-citrulline for muscle pumps, choline bitartrate, theanine Teacrine, and Gamma-aminobutyric acid (GABA).

GABA is a neurotransmitter that may help improve exercise performance. And according to research Teacrine has a promising effect on endurance and cognitive function when combined with caffeine. (7)

 Pricing: $20 range for 30 servings

Caffeine: 375mg per serving

5% OFF

Mr. Hyde NitroX Coupon

Mr. Hyde NitroX Pre-Workout with 2x ENERGY of leading brands, includes 400mg caffeine matrix, and is powered by Yohimbe, TeaCrine, Creatine HCL and Nitrosigine, to delivers you intense energy.

5. Koala Freak Pre-Workout

Staunch Pre Workout Koala Freak
Staunch Pre Workout Koala Freak

Koala freak has a whopping 360mg of caffeine, plus tons of other awesome ingredients.

Now, remember, the higher the caffeine content, the more careful you need to be. And that’s the same for all pre-workouts.

Koala freak has a generous B6 and B12 amount for cell health and energy, plus plenty of the typical pre-workout ingredients. The flavors are definitely acceptable so squeezing your nostrils isn’t necessary!

Pricing: $49 for 30 servings

Caffeine: 360mg per serving

5% OFF

Staunch Koala Freak Coupon

Staunch Pre-Workout Koala Freak: Jitter-Free Energy. Stimulate Your Mind To Provide Unmatched Mental Focus!


6. Legion Pulse Pre-workout

Legion Pulse Pre Workout Supplement
Legion Pulse Pre Workout Supplement

Pulse is a popular and effective, but potent pre-workout. 350mg of energy-filled caffeine, plus L-citrulline, ornithine (Amino for improved performance), and beta-alanine will really get you bouncing off of the gym walls (But in a good way).

Pulse is also all-natural so there’s nothing fake you wouldn’t fancy in it… and it can’t hurt that you’ll love the flavors and taste!

Pricing: $30 range for 21 servings

Caffeine: 350mg per serving

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Legion Pulse Coupon

Legion Pulse Pre Workout Supplement: Natural Nitric Oxide Pre-workout to boost energy & endurance. Creatine Free, Naturally Sweetened & Flavored, Safe & Healthy. 

Read our detailed review on Legion Pulse Pre Workout Supplement.

7. Muscletech Vapor 1 Pre-workout

Muscletech Vapor One Pre Workout
Muscletech Vapor One Pre Workout

There isn’t much here that’s different from any pre-workout supplement except for the high caffeine content of 350mg. That’s why this product is potent and will give you a really nice kick. Plus, you get a good pump with the nitric oxide enhancers.

Beta-alanine, creatine, and betaine are the star ingredients aside from the caffeine with 4g L-citrulline.

Vapor is a beast of a pre-workout!

Pricing: $24-30 for 20 servings

Caffeine: 350mg per serving

5% OFF

Vapor One Pre-Workout Coupon

Muscletech Vapor One Pre Workout: One Scoop Vapor One comes with Betaine HCL, Creatine and Beta Alanine to Boost Energy & Amplify Muscle Building, Jujube Gummy.


8. BSN Endorush

Bsn Endorush Pre Workout
Bsn Endorush Pre Workout

Each serving of Endorush contains a modest amount of creatine (3g) and beta-alanine (1.6g). There’s 300mg of both natural and anhydrous caffeine per serving from green tea leaf or green coffee bean. Plus, you have 1.5g of both L-arginine and L-citrulline.

Endorush is packed with 3g VELOX (50:50) which is BSN’s patented pump technology, 1g of NO3-T Creatine Nitrate, plus 500mg Magnesium (Heart/nerve health).

So, this pre-workout will really give you a kick in the buttocks, and more!

Pricing: Low to mid $20 range for 30 servings

Caffeine: 300mg per serving

5% OFF

BSN Endorush Coupon

BSN Endorush Pre-workout: Every serving comes with 300mg of Caffeine (natural and anhydrous), 16g of Beta-Alanine, 3g of Creatine. For Men and Women!

9. Jym Supplement Science Pre Jym

Pro Jym pre-workout was formulated by nutritional scientist Jim Stoppani and it doesn’t contain anything he wouldn’t out into his body. A serving contains 6g of BCAAs, 6g of citrulline, 2g of beta-alanine, and 2g of creatine HCL.

So, when you need a complete pre-workout, look no further…

Pricing: High $20 range for 30 servings

Caffeine: 300mg per serving

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PRE JYM Coupon

JYM Supplement Pre JYM: Pre-Workout with BCAA's, Creatine HCl, Citrulline Malate, Beta-alanine, Betaine, Alpha-GPC, Beet Root Extract and more


Read our detailed review of Pre Jym Pre Workout Supplement.

10. MusclePharm Wreckage Pre-Workout

Musclepharm Wreckage Pre Workout
Musclepharm Wreckage Pre Workout

Musclepharm is a great brand with affordable prices and Wreckage is a good value.

Each scoop has a respectable 300mg of caffeine, 2g beta-alanine, and 300mg of Vaso6 which is good for getting big pumps in the gym!

Other included ingredients are AstraGin (Astragalus membranaceus extract) and panax notoginseng which are supposedly effective for gut health.

But, this is a pre-workout which won’t hold back and that means you won’t either!

Pricing: $20 range for 25 servings

Caffeine: 300mg per serving

5% OFF

MusclePharm Wreckage Coupon

MusclePharm Wreckage Pre-Workout : 300 mg of Caffeine per serving for superior Focus, extreme energy and sustained pump - with Nitric Oxide, Beta Alanine.

11. Powher Women’s Pre-Workout

Powher Pre Workout For Women
Powher Pre Workout For Women

Powher pre-workout is a clinically-dosed, relatively low-caffeine supplement for women, a good mix of science backed ingredients that could help with sustained energy, performance and focus throughout your workout and the day.

Powher pre-workout formula is different from a lot of similar products that we’ve seen on the market, while some of the ingredients aren’t as proven, this is exactly what makes it stand out.

Natural caffeine: (100mg)


Powher Pre Workout

Powher is a clinically-dosed, easy-on-the-caffeine pre-workout supplement for women that has become quite the buzz. Powher support intense workouts, increased motivation with zero side effects.

Read our complete Powher pre-workout review!


Read also:

Take Your Training to Infinity and Beyond!

These super potent pre-workouts will surely skyrocket your level of intensity in the gym.

They are reserved for the most brutal sessions and caffeine tolerant individuals. So, it cannot be stressed enough that beginners should stay far away until a strong tolerance is built up.

Each pre-workout has effective and studied ingredients which work together to provide you with quality energy and muscle-aiding compounds to further your progress. But, which product you choose depends on your experience level, so please that in mind.

These are among the strongest pre-workouts out right now and there are options for everyone. So, be safe and go get those gains!

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Matthew Magnante
Matthew Magnante
Matthew Magnante is the senior writer for Fitness Volt. He has had a passion for fitness since elementary school and continues to research and learn how to build muscle effectively through training and diet. He also loves to help others to achieve their fitness goals and spread the knowledge where needed. Matthew's other passions include learning about mindfulness, strolling through nature, and always working to improve overall.

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