guy drinking the best stim free pre workout

This is our review of the Best Stim-free Pre-workout in .

A pre-workout supplement is an essential part of the life of a serious athlete. Whether your goal is to build muscle, lose weight, or improve stamina, a pre-workout helps you give 100% to your workout. 

Caffeine is among the leading ingredients in a pre-workout. It is also among the most well-researched ones, with proven results in enhancing energy, improving mood, and boosting alertness.

However, in my years of practice as a nutritionist, I have met many people who are unable to tolerate caffeine. Some due to oversensitivity to it, while others choosing to live caffeine-free. Whatever the reason, a stim-free pre-workout is an excellent way to maximize your workout performance without caffeine.

While numerous such pre-workouts are available, Genius Pre Workout Powder is the best stim-free pre-workout I have come across. Besides the usual ingredients, Citrulline, Beta Alanine, and Betaine, it also contains ingredients like AlphaSize, HICA, ElevATP, and Rhodiola, among others. These ingredients help to boost energy, improve muscle performance, promote greater focus, and delay fatigue. They effectively eliminate the need for caffeine.

I recommend checking the rest of our top contenders as well since each has its own set of plus points. Here are my top 8 best non-stim pre-workout supplements:

Best Stim-Free Pre-Workout – OverallGenius Pre-Workout Powder
Best Stim-Free Pre-Workout – All NaturalLegion Pulse Stim-Free Pre-Workout
Best Stim-Free Pre-Workout – NootropicPUMPSURGE Stim-Free Pre-Workout 
Best Stim-Free Pre-Workout – TastePEScience High Volume Pre-Workout 
Best Stim-Free Pre-Workout – Muscle RecoveryKAGED MUSCLE Stim-Free Pre-Workout
Best Stim-Free Pre-Workout – Nutrient ProfileNutraBio PRE Stim-Free Pre-Workout
Best Stim-Free Pre-Workout – PumpHuge Supplements Pump Serum Stim-Free Pre-Workout
Best Stim-Free Pre-Workout – EnergyTransparent Labs Stim-Free Pre-Workout

Go through the entire article to understand which pre-workout without caffeine will work the best for you and how you can choose the best stim-free pre-workout.

8 Best Stim-Free Pre-workout Reviewed

Note: All nutritional facts mentioned below are for a single serving as mentioned on the product label.

Genius Pre-Workout Powder – Best Stim-Free Pre-Workout (Overall)

Key Ingredients: L-Citrulline Malate, CarnoSyn Beta-Alanine, Betaine Anhydrous, L-Tyrosine, L-Arginine, Taurine, AlphaSize, HICA, ElevATP, Rhodiola, Theobromine, AstraGin, Huperzia serrata

A great pre-workout has 4 distinct qualities: it helps to provide the energy needed for a workout, promotes blood circulation to muscles, helps in enhancing focus and alertness, and works towards delaying muscle fatigue. The Genius Pre-Workout Powder scores on all these levels, and more.

Let’s talk about the energy quotient first. To improve athletic performance, they have included ElevATP, a patented ingredient that has been proven to show great results in boosting ATP (energy) production. Theobromine, arginine, and tyrosine provide ample support for boosting energy and performance.

With 6g of citrulline and 2g of betaine anhydrous, this supplement is already in a great place for giving you visible muscle pumps. The presence of AlphaSize further helps to boost nitric oxide production and increase muscle blood flow. 

Muscle fatigue is an annoying, goal-crushing side-effect of hard training, and countering this is important. The combination of CarnoSyn beta-alanine, Rhodiola, and Taurine helps to delay fatigue and keep you invested in your workout.

The presence of HICA, Huperzia, and again, Rhodiola and theobromine is a great way of sharpening focus and putting you in a feel-good mood.

AstraGin is a genius addition. It helps the body to absorb the pre-workout formula well to maximize benefits and improve your workout experience.

All in all, this supplement receives my highest recommendation as an awesome stim-free pre-workout.

Why do we love itWhat you need to consider
Balanced pre-workout formulaNot high on taste
Patented, well-researched ingredients
No artificial colors, flavors, or sweeteners

Summary of Customer Reviews

Users love the energy and performance they experience after taking Genius Pre Workout Powder. Caffeine-sensitive individuals especially love this supplement. However, some customers complained about the taste and after-taste, while others experienced digestive discomfort after they started this product.

Legion Pulse Stim-Free Pre-Workout – Best Natural Stim-Free Pre-workout 

Key Ingredients: L-Citrulline DL-Malate, Beta Alanine, Betaine Anhydrous, Alpha-GPC 50%

Many people today are extremely particular about what they eat. Then, some are acutely aware of where what they eat comes from. This means consuming supplements that are responsibly sourced and prepared.

Legion Pulse Natural Pre-Workout Supplement is among those few supplements that boast a 100% All-Natural formula. 

With 8g of L-Citrulline DL-Malate and 2.5g of Betaine Anhydrous, this is an amazing supplement for experiencing skin-tearing pumps. Beta-Alanine helps to improve muscle endurance and performance.

Also, if enhanced performance is what you are looking for, this is a wonderful stimulant-free pre-workout thanks to the presence of Alpha-Glyceryl Phosphoryl Choline (Alpha-GPC). Alpha-GPC not only helps to magnify muscle power and performance but also is a great nootropic. It helps to improve mental focus, boost clarity and fortify what is called the mind-muscle connection. Alpha-GPC has been seen to improve the bond between the brain and muscles so that you can pay greater attention to your workout and train harder.

This supplement also has sodium, potassium, and calcium. These 3 nutrients are essential in maintaining muscle health and improving communication between muscles and nerves.

Additionally, it does not contain any artificial sweeteners, colors, or flavors, making it a great option for people who are particular about what they consume.

Why do we love itWhat you need to consider
Natural formulaPoor taste
Nutrients for muscle supportDoes not contain anything specific to delay muscle fatigue
No artificial colors, flavors, or sweeteners

Summary of Customer Reviews

Customers love Legion Pulse Natural Pre Workout Supplement for its effect on improving muscle power. They felt they could train longer and harder after taking this supplement. However, some users did experience itching and tingling after starting it. Others found it bad tasting and complained of mild nausea immediately after consuming the product.

PUMPSURGE Stim-Free Pre-Workout – Best Nootropic Stim-Free Pre-Workout 

Key Ingredients: L-Citrulline, Betaine Anhydrous, Taurine, Alpha-GPC, AstraGin, Huperzine-A

PUMPSURGE Stim-Free Pre-Workout Supplement is among those products that pack a punch with just a few ingredients in their formula.

What I really loved about this supplement, and this is where it scores, is the nootropic aspect. Alpha-GPC is a wonder ingredient that serves as muscle fuel and also helps sharpen focus and increase mental alertness.

Supporting it is Huperzine-A, a plant-based ingredient known to be of immense benefit in improving the mind-muscle connection, and in delaying muscle fatigue. Taurine also contributes to some extent as a nootropic.

Coming to the other core ingredients, while betaine anhydrous and taurine are present in optimal doses, the L-Citrulline dosage is slightly below the optimal dose. While this would not prevent you from experiencing a good pump, this may become a deciding factor when choosing the product to buy because other stim-free pre-workouts have a higher dosage.

The makers do claim that the ingredients are highly bioavailable, meaning that their capacity to be absorbed by the body is higher than those present in other supplements.

Being able to elevate focus without the presence of caffeine also makes this supplement a great pre-workout for evening trainers. The energy surge and alertness are smooth, and do not leave residual jitters or insomnia.

This is a CGMP-certified product, which means that the formula has been tested and certified clean and pure by a well-recognized third party. It is also free of fillers or artificial dyes.

Why do we love itWhat you need to consider
Excellent nootropic representation in the formulaDoes not have a strong muscle recovery profile
Great for evening or late-night trainersContains artificial sweeteners

Summary of Customer Reviews

Many users of PUMPSURGE Pre-Workout Supplement love its nootropic characteristics. They have also praised the smooth, jitter-free energy rush they experience after consuming it. However, some users have found the pump-inducing qualities underwhelming, while others have complained about its below-average taste.

PEScience High Volume Nitric Oxide Booster Pre-Workout – Best Tasting Stim-Free Pre-Workout 

Key Ingredients: L-Citrulline, Performance Pump Matrix (Taurine, Glycerol 65%, Ferula Asafoetida Extract), Arginine Nitrate, Agmatine Sulfate, Vitamin C

Taste is one of the uppermost reasons people purchase (and re-purchase) any supplement. For many people, taste means everything! PEScience High Volume Nitric Oxide Booster Pre-Workout Powder is a godsend for such people.

There are 9 flavors available to choose from. However, I found the Raspberry Lemonade and Paradise Cooler to be the most delicious ones.

The formula contains ingredients such as L-Citrulline, Performance Pump Matrix (Taurine, Glycerol 65%, Ferula Asafoetida Extract), Arginine Nitrate, Agmatine Sulfate. They focus mainly on inducing a great muscle pump by boosting nitric oxide production and improving blood circulation to muscles. 

Another wonderful addition is Vitamin C. Vitamin C is a strong antioxidant that helps muscles recover from wear and tear. It also reduces physical stress and could contribute to a more relaxed workout.

Besides the individual ingredients, the supplement has also incorporated a blend of ingredients to increase muscle power and performance. While the ingredients look great individually, it would be difficult to comment on their overall effect since specific dosages are unavailable.

I would like to mention though, that this supplement does contain artificial flavors and sweeteners to improve its taste and shelf-life.

Why do we love itWhat you need to consider
Amazing tasteContains an ingredient blend
Great range of flavorsContains artificial flavors & sweeteners
Enhanced muscle pump

Summary of Customer Reviews

Users are floored by the variety of flavors that PEScience High Volume Nitric Oxide Booster Pre-Workout Powder is available in. This accounts for much of its rebuy percentage. Also, many customers commented on the swole look they got because of its excellent pump capabilities. However, some buyers were unhappy with the presence of artificial sweeteners, while others complained about their sandy and clumpy texture.

KAGED MUSCLE Stim-Free Pre-Workout – Best Stim-Free Pre-Workout for Muscle Recovery

Key Ingredients: L-Citrulline, BCAA (2:1:1), BetaPower Betaine, CarnoSyn Beta Alanine, Creatine HCl, Coconut water powder, Taurine, N-Acetyl-L-Tyrosine, L-Tyrosine, SPECTRA Total ORAC Blend, Niacin, Vitamin B6, Vitamin B12, Sodium

When selecting the right pre-workout, we usually focus (and rightly so) on how efficiently it increases energy, and if we can sustain hard workouts for longer periods. 

Once the effect of the pre-workout supplement naturally wanes, it is time for the body to start repairing itself. Many people opt for post-workout supplements, to help with recovery. KAGED MUSCLE Stim-Free Pre-Workout is an all-rounder in that sense. Though branded as a pre-workout supplement, what’s impressive is that it also has some post-workout capabilities.

It contains BCAAs (branched-chain amino acids) in the perfect 2:1:1 ratio. BCAAs are crucial to optimize muscle recovery. They help repair the wear and tear of muscles and rejuvenate them faster to enable workouts to continue in a regular rhythm.

It also contains a blend of antioxidants derived from various plant sources. Antioxidants promote faster healing and reduce oxidative stress in the body. This again, helps the body to recover faster. 

Another amazing addition is the presence of coconut water powder. For muscles to recover well, hydration is very important. The coconut water powder provides the required hydration and electrolytes that help muscles regain water and recover more quickly.

This product also contains crucial pre-workout ingredients like L-Citrulline, patented betaine and beta-alanine, and Taurine to help generate great pumps. At the same time, Creatine HCl takes care of energy and muscle power.

Why do we love itWhat you need to consider
Amazing for muscle recoveryNot for creatine-sensitive individuals
Takes care of hydrationMay cause tingling and itchiness
Tested for banned substances

Summary of Customer Reviews

Users are amazed by the energy-boosting capabilities of KAGED MUSCLE Stimulant Free Pre-workout. They love that they can train harder and longer and recover well post-workout. However, some users complained of itchiness and tingling after consuming it, while others experienced nausea and gastric disturbance.

NutraBio PRE Stim-Free Pre-Workout – Best Stim-Free Pre-Workout (Nutrient Profile)

Key Ingredients: L-Citrulline, Creatine Monohydrate, Beta Alanine, Betaine Anhydrous, Agmatine Sulfate, L-Tyrosine, Calcium, Phosphorus, Magnesium, Sodium, Potassium, Choline, Vitamins B3, B6, B12 and C

Most of us are focused on whether the right ingredients are present in the right dosage in a pre-workout supplement. However, the presence of nutrients can be a value-added bonus.

Pre-workouts need to ensure an optimum mind-to-muscle connection, generate high muscle power, and help you train longer and harder.

Our bodies tend to respond better to nutrients. With the right nutrients added to quality pre-workout ingredients, goals can be met more quickly and effectively. NutraBio PRE Stim-Free has among the best nutrient profiles I have encountered. 

This supplement contains Calcium, Phosphorus, and Magnesium which are loyal muscle, nerve, and bone supporters. You can train better when bones are strong because they provide able assistance to muscles. Healthy nerves ensure peak communication with muscles, better alertness, and focus.

Choline is a nutrient that helps maximize endurance and delay fatigue. B Vitamins help to increase blood flow to muscles and maintain good brain and muscle coordination. Vitamin C is a wonderful antioxidant that helps in muscle repair and recovery.

The rest of the ingredients are those that you would usually expect in a good pre-workout. I do like it that the manufacturers have put some thought into presenting the formula. The Supplement Facts table has been put together to clearly show the role of each ingredient.

Why do we love itWhat you need to consider
Excellent nutrient profileNot for creatine-sensitive individuals
Well-thought-out formulaContains artificial flavors and sweeteners
Great strength & endurance complex

Summary of Customer Reviews

Users love the combination of ingredients in NutraBio PRE Stim-Free. They love the smooth energy rush and enhanced endurance they experience, given that it is a stim-free product. But some customers found the supplement too sweet, while a few others experienced digestive disturbances after taking it.

Huge Supplements Pump Serum Stim-Free Pre-Workout – Best Stim-Free Pre-Workout for Pump

Key Ingredients: L-Citrulline, Betaine Anhydrous, GlycerPump, L-Tyrosine, Nitrosigine, Agmatine Sulfate, VasoDrive AP, Huperzine A, Bioperine, Beetroot extract, Pomegranate extract, Choline, Sodium

If you are seeking skin-tearing pumps that last long, Huge Supplements Pump Serum Stim-Free Pre-Workout is what you need. With a formula that boasts fully-dosed ingredients in its serving, this pre-workout is for serious trainers. 

8g of L-Citrulline and 3g of Betaine Anhydrous are capable of giving you a great pump. But with the addition of GlycerPump, a patented form of glycerol, Agmatine Sulfate, L-Tyrosine and VasoDrive AP, your chances of getting a ripped look increase dramatically.

I feel this supplement has been created to specifically cater to the “swole look” crowd. Almost every ingredient featured in the formula has a role in boosting nitric oxide levels and blood circulation in the body.

What is even better is that they have only included scientifically backed ingredients. This ensures smoother energy escalation, greater muscle endurance, and better cognition during your workout.

They also have unique flavors, and the powder mixes and blends very quickly, giving you a cleaner intake.

Another plus point is that this is a great pre-workout for people sensitive to beta-alanine since they have skipped this ingredient in the formula.

Why do we love itWhat you need to consider
Gives skin-tearing pumpNot for creatine-sensitive individuals
No tingling and itchinessContains artificial flavors and sweeteners
Amazing flavors

Summary of Customer Reviews

Customers love the strength they experience to sustain a hard workout after taking Huge Supplements Pump Serum Stim-Free Pre-Workout. They also love the quality of the pump they get. However, some users found the serving size a bit much.

Transparent Labs Stimulant Free Pre-Workout – Best Stim-Free Pre-Workout for Energy

Key Ingredients: Citrulline Malate, BCAA (2:1:1), Beta Alanine, BetaPure Betaine Anhydrous, Taurine, N-Acetyl L-Tyrosine, Choline Bitartrate, elevATP, Mucuna Pruriens, L-Norvaline, BioPerine

If I had to prioritize among the core duties of a pre-workout supplement, the first one to be fulfilled has to be as an energy booster. An ideal pre-workout should provide energy that extends your training capacity and encourages you to exercise for longer periods.

I have found that Transparent Labs Stim-Free Pre-Workout is among the best non-stim pre-workout for amplifying energy.

It contains elevATP, a wonderful patented ingredient that helps to improve energy and increase muscle power. It also helps you focus better on your workout, and enhances mental energy. Another great addition to the formula is BioPerine, again a patented ingredient that helps to boost energy. 

Taurine, N-Acetyl L-Tyrosine, and Choline help in delaying muscle fatigue, pushing you to train harder.

This supplement also contains instantized branched-chain amino acids (BCAAs) in the prescribed 2:1:1 format. BCAAs usually do not dissolve well in liquids. This reduces their ability to be absorbed well. An instantized form makes BCAAs more soluble and hence, more bioavailable. BCAAs are an incredible value addition because they also help in building muscle, prevent protein breakdown, and delay muscle fatigue. 

Besides these, 6g of Citrulline Malate, 4g of Beta-Alanine and 2.5g of BetaPure Betaine Anhydrous increase blood circulation and give visible pumps.

Why do we love itWhat you need to consider
Clean and smooth energy rushNot high on taste
Presence of instantized BCAA (2:1:1)May cause tingling and itchiness
Contains no artificial colors or flavors

Summary of Customer Reviews

Users love the jitter-free energy rush they experience after consuming Transparent Labs Stimulant Free Pre-Workout. Some users have mentioned how they can work out at night without feeling sleepless after. A few customers mentioned experiencing nausea after taking this supplement. Others were unhappy with its taste, though they stated that it mixed well with water.

What is a stim-free pre-workout?

A stim-free pre-workout is a supplement that does not contain any stimulants and yet gives you ample energy to train hard and long.

The commonest stimulant in a pre-workout is caffeine. Other stimulants that could be included are theacrine, green tea extract and yohimbine. 

Caffeine is a very well-researched ingredient that has shown immense benefits as an energy booster and mood enhancer. However, there are many people who are sensitive and even allergic to caffeine.

Caffeine-sensitive people can experience unpleasant side effects after taking a stim pre-workout. It can cause jitters, sleeplessness, nervousness, and palpitations long after the workout is over. It can also cause a sudden energy crash, where you feel an acute drop in energy and can even experience weakness.

For such individuals, a stimulant-free pre-workout would work best.

What are the benefits of a caffeine-free pre-workout?

The core benefits of using a caffeine-free pre-workout are:

  • Jitter-free and crash-free energy
  • No loss of sleep
  • Better hydration and avoidance of cramps
  • No nervousness or anxiety
  • Increased muscle endurance
  • Enhanced blood flow and pumps
  • Better nutrient absorption
  • Steady blood pressure

What are the most common ingredients in a stim-free pre-workout?

A stim-free pre-workout commonly includes the following ingredients


Creatine is an excellent way to increase energy and keep it sustained throughout the workout. It also helps in delaying muscle fatigue and assists in muscle recovery.


Branched-chain amino acids help at different levels of a workout. They start off by boosting energy, then contribute to better muscle endurance, and help in muscle repair post-workout.

Huperzine, Rhodiola, Theobromine, BioPerine

These ingredients contribute to a smooth energy rush. They may be present as sole ingredients or could be included in two’s or three’s depending on the other ingredients in the pre-workout formula.


Citrulline, in its various forms, helps to increase nitric oxide levels and improves blood circulation to give better power and pump to muscles.


Beta-Alanine is an excellent ingredient to increase the endurance capacity of muscles and help them perform better and for longer.


This is another wonderful ingredient that helps enhance pumps and boost muscles’ circulation. It also helps to improve muscle hydration and recovery.

Buying Guide: What to look for while buying a Stim-Free Pre-workout?

When deciding on which pre-workout without caffeine suits you the best, consider the following:

Stay away from ‘Blends’ as much as possible

Always prefer supplements that display the exact dosage of each ingredient in it. “Blends” may feature important ingredients, but if their individual quantities are not known, we would be unable to understand the supplement’s effectiveness.

After a lot of research and consideration, I have recommended a few products with ‘blends’ in the above list. However, do stay away from blends as much as possible. 

Artificial additives

Choose products that are free of artificial colors and flavors. Also, avoid the presence of additives like synthetic sugars. Either go for a sugar-free product or one that has natural sugars.

Third-party tested

Go for GMP-certification supplements or a Certified-Organic label from a trusted third party. Better quality ingredients mean a more efficient supplement.


And while you look for all of the above points, do not forget pricing. Buy a pre-workout that fits comfortably within your budget so you can keep consuming it and maximize its benefits. 

In Conclusion

Stim-free pre-workouts are an excellent way of ensuring optimum energy performance in people who are either sensitive to caffeine or do not want to depend on stimulants for their energy kick.

While all of the products listed above are worth their weight in gold, Genius Pre-Workout Powder is my top choice. The formula works well in every stage of a workout, be it as an energy booster and power enhancer, or as being instrumental in delaying muscle fatigue and improving endurance. This pre-workout is an all-rounder.


What pre-workout doesn’t give you jitters?

Any pre-workout that does not contain a stimulant will mostly not give you jitters. Caffeine is the stimulant that is most notorious for causing jitters and agitation in sensitive individuals.

Do pre-workouts without caffeine work?

Yes, absolutely. A pre-workout with quality and standardized ingredients will benefit you even if it does not contain caffeine. Look at our curated list to know which will work best for you.

Are caffeine-free pre-workout supplements safe?

Yes. Caffeine-free pre-workout supplements are generally safe. Go for a supplement that transparently mentions its formula and quality-testing results.

How can I energize my pre-workout without caffeine?

Many scientifically backed ingredients can effectively take over the functions of caffeine in a pre-workout. Creatine, BCAAs, Citrulline, Beta-Alanine, Huperzine, and Rhodiola are just a few ingredients that can help boost energy and mental focus. So the best way to energize your pre-workout is by ensuring the presence of any of these ingredients. 

Does stim-free pre-workout give you tingles?

Some of them may. While many people can experience tingles because of the presence of caffeine in their pre-workout, Beta-Alanine is another ingredient known for giving you tingling sensations. A stim-free pre-workout that contains Beta-Alanine could give you a tingly and itchy sensation at the beginning of a workout, but it usually passes off soon.

If you are looking for such a supplement, check out our review on the best pre-workouts that avoid tingling and itching.

Disclaimer: This article is for educational and informational purposes only. It should not be considered medical advice. Please consult a doctor or nutritionist before starting the consumption of any supplements. Always check the label before purchasing a product for potential allergic reactions.

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