The 5 Best Stim-Free Pre-Workout Supplements In 2020: Our Tested Reviews

Top Rated Stim Free Preworkout Supplements

By Gerhard Hoermann, ISSA-CFT
Updated on: October 3, 2020

Honest Review Guarantee from Fitness Informant:
Our product testing team uses the full 30 day serving amount in container before reviewing. Learn more about our review process here.

Stimulants are overtaking the world! That may sound extreme, but it is close to being true. The amount of caffeinated beverages and pre-workouts in this space have reached an all-time high, with no signs of slowing down.

Stimulant Free pre-workout supplements are on the rise as people recognize our "addiction" to stimulants. Stimulants can be very effective, but the truth is some of us just cannot handle them. They have a adverse affect on our central nervous system that can actually lead to a very scary experience.

Stim-Free pre-workouts feature ingredients that still contribute to your overall performance enhancement, without the use of ingredients like caffeine, Synephrine, Higenamine, Yohimbe, DMHA, Eria Jarensis and many more. 

This is a comprehensive list of high-quality, effective products that you can trust to power you through your next workout.

Which Stim-Free Pre-Workout Supplement is right for you? 

That’s where we come in. Our Best of list includes supplements PERSONALLY tested by Fitness Informant. Many top 10 lists online promote based on commission dollars, we do it based on what works. That’s the truth.

We Remove The BS The Supplement Companies Feed You, And Tell You What They Don’t Want You To Know.

We remove the clutter from the stimulant-free pre-workout supplement category. We provide you with the five best stim-free pre-workout supplements.

The following products on our stimulant free pre-workout rankings list were used by the author of this article.

We used each of these supplements through the duration of a full container. Sample packs were not used in determining the rankings.

Stop relying on faulty information that is influenced by outside writers and money. This stim-free pre-workout list is the real deal. Here at Fitness Informant, we don’t steer you wrong.

Be Informed. Live Fit.


A Comparison of Our Top Rated Stim-Free Pre-Workout Supplements

Here's the top 5 picks for the best Stim-Free Pre-workout supplements that money can buy:

Product Name

Highlights

Rating

#1 Inspired Nutraceuticals FSU 

Inspired Nutraceuticals FSU

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Overall Pump Supplement

Highlights:


  • 3.0g NO3-T Arginine Nitrate
  • 4g L-Citrulline
  • Strong Nootropic Blend

Our #1 Rated

Fitness Informant Logo

9.3 out of 10

in the Pre-Workout Category

#2 Morphogen Nutrition Volugen

morphogen nutrition

Use coupon code INFORMANT to save 10%

Best for Simplicity

Highlights:


  • 8g Citrulline
  • 2g Peak O2
  • 300mg Vaso6™
  • 1.5g Nitrosigine®

Our #2 Rated

Fitness Informant Logo

8.9 out of 10

in the Pre-Workout Category

#3 Core Nutritionals PUMP

core pump

Use coupon code INFORMANT to save 20%

Best for Simplicity

Highlights:



  • 2.5g Betaine Nitrate
  • 2g Peak O2
  • No Overlapping Ingredients
  • Our #3 Rated

    Fitness Informant Logo

    8.9out of 10

    in the Pre-Workout Category

    #4 InnovaPharm NovePump Neuro

    InnovaPharm NovaPump Neuro

    Use coupon code INFORMANT to save 15%

    Best for Focus

    Highlights:



  • 8g Citrulline Malate
  • 1g Super Spinach®
  • PecaPump™
  • Strong Nootropic Formula
  • Our #4 Rated

    Fitness Informant Logo

    9.2 out of 10

    in the Pre-Workout Category

    #5 NutraBio PRE Stim-Free

    NutraBio PRE Stim Free

    Use coupon code INFORMANT to save 10%

    Best for Performance

    Highlights:


    • 13.9 Power, Strength. & Endurance Complex
    • 7.75g Pump 
    • 6g L-Citrulline

    Our #5 Rated

    Fitness Informant Logo

    8.7 out of 10

    in the Pre-Workout Category

    There are hundreds of different brands and variations of Stim-Free pre-workout supplements out there.

    How did these 5 make Fitness Informant's top 5 list? Read on and we'll tell you:


    #1 Inspired Nutraceuticals FSU

    Inspired Nutraceuticals FSU
    • Rating: 9.3 out of 10
    • Servings: 40/20 servings
    • Best For: Overall Non-Stim Product

    Use coupon code INFORMANT to save 10%

    Pros

    • 3.0g NO3-T® Arginine Nitrate
    • 4g L-Citrulline
    • Tyrosine and Lions Mane for Focus
    • Great Taste
    • Electrolytes
    • Creatine Monohydrate and Betaine Anhydrous

    Cons

    • No Glycerol Monostearate

    FSU ​was one of the most impressive formulas to be released onto the market in 2019. Seriously, the guys at Inspired Nutraceuticals have ben nothing short of impressive when it comes to formulas. FSU is Inspired's pump product, and it is a serious contender. 

    It starts us off with 4g of L-Citrulline, followed by 3g of NO3-T® Arginine Nitrate. These two ingredients right here are what really put FSU over the top as far as pumps go. Honestly you really don't need much else to aid for pumps, besides carbohydrates and proper hydration of course. 

    FSU also has a blend specifically meant for performance/hydration. This blend provides a blend of Creatine, Betaine, and electrolytes. Creatine and Betaine are proven ingredients which aid in power output, and the added electrolytes also aid in muscle contractions and prevent cramping. 

    The last blend in FSU is called the "I'm Seriously So Focused Right Now", and we wouldn't expect anything else from Chris Waldrum (the owner). This is a blend of Tyrosine, Lion Mane, and Neurofactor. These 3 ingredients have solid research supporting them for focus/alertness. Honestly all that's really missing from this is caffeine and it would be a top contender for pre-workout of the year. 

    Who Makes It?

    Inspired Nutraceuticals is a smaller company focused on product quality and innovation. Unlike the big guys, who focus much of their efforts growing the top and bottom line through clever marketing, IN is putting their resources into R&D to provide quality supplements for the consumer.

    What's In It?

    One serving (2 scoops) contains:

    • 4g L-Citrulline- clinically dosed Citrulline to help move blood into the muscles
    • 3g NO3-T® Arginine Nitrate - increases nitric oxide in the body - great pumps
    • 200mg Horny Goat Weed - an aphrodisiac that aids in cardiovascular health
    • 3g Creatine Monohydrate - aids strength and power output
    • 2.5g Betaine Anhydrous - good for power output
    • 500mg Potassium Glycerophosphate - electrolytes
    • 500mg Sodium Glycerophosphate - electrolytes 
    • ​​300mg AquaMin® ​- aids in hydration
    • ​​300mg Pink Himalayan Sea Salt - aids in hydration
    • ​​2g L-Tyrosine ​- aids in focus and alertness
    • ​​600mg Lions Mane Mushroom ​- aid in focus
    • 100mg Neurofactor® - aids in focus
    Inspired Nutraceuticals FSU label

    Bottom Line:

    FSU is easily one of the best Pump products on the market. It provides more Arginine Nitrate than any other product in the industry, can aid in focus with it's nootropic blend, and can also be good for hydration and strength. The taste is amazing, the pumps are awesome, and it can simply help you perform!


    Read the in-depth full review here.

    Use coupon code INFORMANT to save 10%

    #2 Morphogen Nutrition Volugen

    morphogen nutrition
    • Rating: 8.9 out of 10
    • Servings: 20 servings
    • Best For: Performance

    Use coupon code INFORMANT to save 10%

    Pros

    • 8g L-Citrulline
    • 2g Peak O2
    • 300mg Vaso6
    • 508mg VasoDrive™
    • 3g GlycerSize™

    Cons

    • PeakO2 can hurt flavor

    Morphogen is a brand that really makes some of us supplement nerds giddy. With some of the most loaded formulas on the market, there is no way we couldn’t get our hands on at least one of their products. Well, after finally trying Volugen, there was no way we couldn’t add this to our list.  

    Volugen is a loaded stim-free pre-workout, that simply delivers. The profile starts off with 8 grams of L-Citrulline and 3 grams of GlycerSize™. Both can help with pumps but work through different pathways, and both are dosed great. Following this you get a clinical dose of Betaine Anhydrous at 2.5g, which can help with power output. 

    Morphogen decided to add some mushrooms to Volugen, in the form of PeakO2®, an ingredient from Compound Solutions. This blend of mushrooms can help with performance by increasing your VO2 Max, and at 2 grams, is at the clinical dose. Nitrosigine® is the next ingredient in Volugen, and it is a powerhouse. It is arginine-silicate with inositol, and has been shown to be more effective gram per gram at aiding with pumps than Citrulline. Of course, it is at the clinical dose.

    Next up comes our favorite form of Carnitine, which is Acetyl-L-Carnitine. ALCAR is a solid nootropic and can help with focus. At one gram, it is dosed well. Rhodiola is the next ingredient in Volugen, and is a popular adaptogen. It can help with focus under times of stress, and not only does Volugen use a solid dose, but they also have a great standardization of the actives in Rhodiola. 

    VasoDrive™ is the next ingredient, and it is known for being expensive. It is derived from Casein, and has solid research backing it. It can help with pumps and gets better the longer you use it. To our knowledge, Volugen is currently the only product that contains 508mg, which is the dose you really want, and you mostly see this at 254mg. Have to give credit where it’s due.

    The last two ingredients are L-Norvaline and Vaso6™. Norvaline is an amino acid that prevents Arginine from being broken down. At 250mg, it is dosed well. As for the Vaso6™, it is a specific extract derived from Green Tea which has been shown to increase nitric oxide and act as a vasorelaxant. 

    Overall, there is no way we cannot love this product, and although we have stated that the flavor could use some work, we can easily overlook that for the profile and effectiveness of the product. If you want a loaded product, this is the one you really want to go out of your way to try. Well worth trying at least once in your life.

    Who Makes It?

    Morphogen is a brand that is known for their loaded products with impressive profiles. While not widely available, this gives them the option to make some of the best formulated products on the market. With the owner being an industry veteran with plenty of experience and qualifications when it comes to formulations, Morphogen knows how to deliver loaded, yet fun products that are almost too goo for their own good sometimes. There is no Morphogen product that disappoints as far as we know.  

    What's In It?

    One serving  contains:

    • 8g Citrulline – clinically dosed Citrulline to help move blood into the muscles
    • 3g Hydromax - a newer form of Glycerol, allows muscle to retain water for repair and growth. Helps with pumps
    • 2.5g Betaine Anhydrous - good for power output
    • 2g PeakO2™ – blend of mushrooms that helps with endurance.
    • 1,500mg Nitrosigine – enhances body's NO production
    • 1g Acetyl-L-Carnitine – helps with focus
    • 680mg Rhodiola Resea – an adaptogen that can help with focus in times under stress
    • 508mg VasoDrive™ - a derivative of Casein that helps with pumps
    • 300mg Vaso6™ - an extract from Green Tea that acts as a vasorelaxant and aids with nitric oxide production
    • 250mg Norvaline – inhibits Arginine from being broken down in the body
    volugen

    Bottom Line:

    Morphogen Volugen is certainly a pump product to be reckoned with. In our review (linked below), we had to ask ourselves, even with more pump ingredients... would anyone notice a better pump at the gym than this? Either way, Volugen deserves the spot on this list due to the loaded profile, insane pumps, and awesome performance benefits, and affordability. Seriously if you like pump products, Volugen is one you have to try for yourself. 


    Read the in-depth full review here.

    Use coupon code INFORMANT to save 10%

    #3 CORE Nutritionals Pump

    core pump
    • Rating: 8.9 ​​out of 10
    • Servings: 40/20 servings
    • Best For: Simplicity

    Use coupon code INFORMANT to save 20%

    Pros

    • 3.2g Beta-Alanine
    • 2g Peak O2
    • 2.5g Betaine Nitrate
    • 6g L-Citrulline
    • 600mg Alpha GPC

    Cons

    • PeakO2 Can Hurt Flavor

    Core Nutritionals PUMP is a non-stim pre-workout that was released in 2020, as part of Core’s rebrand. It has easily taken over as one of the best products on the market, and we can’t praise it enough. One of the best aspects to the profile is that there are no overlapping/redundant ingredients. 

    The profile starts off with 6 grams of Citrulline, and 3.2 grams of Beta-Alanine. Citrulline is great for pumps, as it converts to Arginine, which is a precursor to Nitric Oxide. As for Beta-Alanine, it is used for aiding in endurance. Both are dosed well.

    Next up, we have the powerhouse behind this product, which is Betaine Nitrate (NO3-T®). Nitrates are very effective at causing vasodilation, and we get a solid 2.5 grams of Betaine Nitrate in here. This is the ingredient that really puts it over the top for us here on FI.

    The next ingredient we have is PeakO2®, which is a blend of mushrooms from Compound Solutions. This is a blend of mushrooms that is used to increase VO2 Max, which can increase endurance. It is a great ingredient with solid research behind it, and at 2 grams, it is dosed well. Following this we have HydroMax®, which is a trademarked form of Glycerol Monostearate. This ingredient can help with cellular hydration, and is great for aiding with pumps. At 2 grams, it is dosed well. 

    Finally, we have Alpha GPC, which is a source of Choline. Choline is converted to Acetylcholine in the brain which is a neurotransmitter. This can aid with focus, and the Alpha GPC is dosed well in here. 

    Core PUMP is well deserving of being on this list, and we highly suggest grabbing it if you want a consistent non-stim pre-workout.

    Who Makes It?

    Core Nutritionals has recently gone through a rebrand, and they now look like a sexy brand, something they were kind of lacking beforehand. The brand has consistently come out with solid products, and are now killing it in 2020 with their new product launches. With a team that really cares about efficacious dosing and products that work, Core Nutritionals is a brand for everybody

    What's In It?

    One serving (two scoops) contains:

    • 6g L-Citrulline - converts to Arginine in the body and may help with pumps
    • 3.2 Beta-Alanine- buffers lactic acid which may aid in endurance
    • 2.5g Betaine Nitrate (NO3-T®) - a source of Nitrates which aids in pumps
    • 2g Peak O2 - increases VO2 max which may aid in endurance
    • 2g HydroMax® - helps with cellular hydration
    • 600mg Alpha GPC - source of Choline that aids in focus
    core pump

    Bottom Line:

    Core Nutritionals PUMP is a great non-swim pre-workout that is easily one of the best on the market. With 6 grams of Citrulline, Betaine Nitrates, and HydroMax®, there is no way you're not going to get a noticeable pump. It is technically a stim-free pre-workout, and the product stacks well with many stem-based pre-workout out there. This is certainly a product worth stocking up on.


    Read our full review here.


    Use coupon code INFORMANT to save 20%

    #4 InnovaPharm NovaPump Neuro

    InnovaPharm NovaPump Neuro
    • Rating: 9.2 out of 10
    • Servings: 2​​0 servings
    • Best For: Focus

    Use coupon code INFORMANT to save 15%

    Pros

    • 8g L-Citrulline Malate
    • 1g SuperSpinach™
    • PegaPump 
    • Strong Nootropic Formula 
    • Taste
    • Transparent Formula

    Cons

    • One Serving is 1/2 Scoop

    NovaPump Neuro is a pump product that really caught us by surprise. While looking at the profile, we realized that we shouldn't have been.

    NovaPump Neuro is a stim-free pre-workout that really has more in mind than just a pump. It's essentially a very powerful pump product with an excellent Nootropic blend. NovaPump Neuro starts us off with 2 familiar ingredients that you expect in most pre-workout/pump products. Citrulline Malate at 8g, and 4g of GlycerSize®. These are both common pump ingredients, and nice to see in here. Not only do we have some basics, we also have some new trademarked ingredients that aren't as popular. Super Spinach™ is red spinach, and it is touted to have 4x the amount of nitrates when compared to beets. Following this we have PegaPump™, which is a vasorelaxant. Overall, this is a solid, and certainly interesting formula.

    Of course, any product with "Neuro" in its name has to deliver some sort of focus benefits right? Well, NovaPump Neuro has a solid Nootropic blend, which really helped solidify its spot on our list. This starts us off with 1g of ALCAR, and 1g of Tyrosine. We love Tyrosine here on FI and it is great for focus, while ALCAR is our favorite form of Carnitine, as it is also good for focus. Both are dosed well and great to see in here. Also, we have Alpha GPC at 600mg, and Huperzine A at 300mcg. Alpha GPC is form of choline with a high bioavailability, while Huperzine A prevents Choline from being broken down in the brain. Both are dosed well in here, and we have no complaints. 

    Overall, the profile is solid and the taste is good as well. It's a great add-on and has us excited with what InnovaPharm has planned for us in the future.

    Who Makes It?

    InnovaPharm is a brand that has been under the radar for quite some time, yet one look at the profiles will make you think otherwise. They aren't doing any crazy or outrageous marketing, just letting their products speak for themselves. They have a strong focus on formulas, while not losing that "cool" factor about them.

    If you haven't taken a look at them yet, we urge you to. The formulas are impressive, they aren't afraid to use new and innovative formulas, and we expect more from them in the near future.

    What's In It?

    One serving contains:

    • 8g Citrulline Malate (2:1) – promotes blood flow and pumps
    • 4g GlycerSize® – more stable form of Glycerol that holds blood and water within the muscle
    • 1g Super Spinach™ – source of Nitrates
    • 1g Agmatine – this produces Nitric Oxide and larger pumps
    • PegaPump™ – vasorelaxant which aids in pumps
    • 1g ALCAR - form of Carnitine which that aids in focus
    • 1g Tyrosine - amino acid that aids in focus
    • 600mg Alpha GPC - nootropic that improves focus
    • 300mcg Huperzine A - prevents Choline from being broken down in the brain
    NovaPump Neuro Label

    Bottom Line:

    NovaPump Neuro is one of our favorite stim-free pre-workouts, and we highly suggest you go ahead and try it. If you're looking to stay away from stimulants, yet still want focus in the gym along with powerful pumps, InnovaPharm is certainly a brand to look at. 


    Read our full review here.

    Use coupon code INFORMANT to save 15%

    #5 NutraBio PRE Stim-Free

    NutraBio PRE Stim Free
    • Rating: 8.7 out of 10
    • Servings: 30
    • Best For: Complete Profile

    Use coupon code INFORMANT to save 10%

    Pros

    • 3.2g Beta-Alanine
    • 1.5g L-Tyrosine
    • 6g L-Citrulline
    • 2.5g Betaine Anhydrous
    • 100% Transparent Label

    Cons

    • Could use more Nitrosigine®

    If you've ventured around our website, you've seen the brand NutraBio and may have seen their stimulant based pre-workout which is rated top 5. Their Stim-Free PRE is also amazing. They essentially looked at their award winning PRE Extreme and formulated it to remove the stims while still providing a great pre-workout powerhouse. 

    When we say well-rounded, we mean that NutraBio tries to hit on everything from strength to endurance to hydration. We get a Power, Strength & Endurance Complex. They also give us a Pump Matrix. Then we get a Focus & Drive Matrix. Lastly, they cure our Hydration with several key ingredients.

    You won't necessarily find high dosages of key branded ingredients like you may in other supplements, but they also include more to hit on all pillars a pre-workout should hit on. We are a huge fan of Stim-Free PRE from NutraBio because they truly care about you and your workout.

    Who Makes It?

    NutraBio won our 2017 Brand of the Year award for their commitment to label transparency and product consistency. They care about the consumer, and what we are putting into our bodies. They also care about creating best tasting pre-workout supplements.

    NutraBio has a 3rd party testing website called CheckMySupps.com where you can track the validity of the supplements you buy. Can you find another company with that kind of commitment to the consumer? Good luck.

    What's In It?

    One serving contains:

    • 3.5g L-Leucine – one of the three BCAAs, Leucine is responsible for starting the mTOR process; many say it is the most important
    • 3.2g CarnoSyn Beta-Alanine - this is the ingredient that gives you the tingles, but it is not a stimulant and it helps with power
    • 3g Creatine Monohydrate – promotes muscle strength and gains
    • 2.5g Betaine – clinical dosage of Betaine that helps with prolonged endurance
    • 1.2g Malic Acid – helps provide energy
    • 300mg Creatine MagnaPower – along with creatine monohydrate, helps promote strength gains
    • 6g L-Citrulline - promotes blood flow and pumps
    • 1g Agmatine Sulfate – helps produce NO in the body to contribute to the pump
    • 750mg Nitrosigine – increases NO in body to produce great pumps
    • 1.5g Tyrosine – cognitive enhancing ingredient, great dosage
    • 500mg Choline Bitartrate - cognitive enhancing ingredient to help with focus
    • 100mcg Huperzine A - another great cognitive enhancing ingredient
    • 2.7g Hydration Matrix - helps keep you hydrated
    NutraBio PRE Stim Free Label

    Bottom Line:

    As you can tell based on the sheer number of ingredients, NutraBio PRE Stim-Free is going to be a kick-ass non-stim pre-workout supplement. The team at NutraBio felt it was important to hit on all the important aspects a stimulant based pre-workout would. You will get a great workout powered by this stimulant free pre-workout supplement.


    Read our full review here.

    Use coupon code INFORMANT to save 10%


    Do You Need Stimulants?

    You will find A LOT of pre-workout products on the market, and even here at Fitness Informant, that use stimulants. If you can stomach them and they don't have an adverse affect on you they are a great addition. However, we understand some cannot tolerate them, in fact, they are even deadly to some. In that case, companies have smartened up and started producing pre-workout supplements without the stimulants.

    Long story short, stimulants are not needed nor are they required. They can provide fat burning, focus and energy producing affects, but so can other non-stimulant ingredients found in these pre-workouts listed above.

    If you have issues with stimulants, this list will provide you with clear direction on where you should turn to power you through your next workout. If you have any questions, ask. That's what we are here for!

    Our Muscle Stim-Free Pre-Workout Supplement Testing Process

    We examined five different areas of each pump activating supplement when we compiled our rankings:

    1. Ingredients Profile
    2. Effectiveness
    3. Taste
    4. Mixability
    5. Value

    preworkout powder in bottle

    Ingredients Profile

    When we review each pump activating supplement on their ingredient profile, we look at the active ingredients being used and their dosages.

    Many pump supplements include a variety of beneficial ingredients, but under dose them proving to be non-effective.

    Effectiveness

    Effectiveness is an extension of ingredient profile. If the product uses proven ingredients at clinically suggested dosages, the product should be effective.

    Everyone is different. Everyone takes to different ingredients differently at varying dosages. We have tried and tested each of these products throughout the full duration of their container to ensure these products are effective over their life.

    Taste

    We review taste on two different components. First, how close does the muscle pump supplement taste to the actual name printed on the label. For example, does Blue Raz actually taste like blue raspberry. Second, we review it on overall taste (in our opinion) versus others in the same flavor category.

    Mixability

    Mixability refers to how well does the product mix in 8-12oz of water. The testing process for a pump activating drink we use here is a generic Blender Bottle with the chrome spiral ball. We use regular tap water with no ice.

    Value

    Value is a combination of ingredient profile, effectiveness, taste, mixability and cost. We do not just look at the price tag like a lot of others do. If a product is priced at a premium, we inform you if it is worth the premium price or not based on all the categories. We look at the overall picture of the  pump activating supplement, and how it compares to other pump supplements on the market.

    Please Note: Many of the “top 10” lists you find online are written by content writers with no in-gym or supplement experience who are paid by the word count to write an article for a website trying to generate money.

    These lists are influenced by brands who pay for placement. These lists contain pump activating supplements that are, for the lack of a better word, garbage.

    The following products on our best of list were used by the author of this article. He used the pump activating supplements through the duration of a full container. Sample packs were not used in determining the rankings of the best pump producing supplements.

    Stop relying on faulty information that is influenced by outside writers and money. This list is the real deal. Here at Fitness Informant, we don’t steer you wrong. Be Informed. Live Fit.