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Home » Best Pre-Workout » The 7 Best Non-Stim Pre-Workouts of 2025, Get More Energy without the Caffeine

The 7 Best Non-Stim Pre-Workouts of 2025, Get More Energy without the Caffeine

Kick your exercise routine up a notch without any jitters thanks to these non-stim pre-workout supplements.

Written by Amanda Capritto, CPT, CSNC, CPS
Updated by Matt Cummings, NASM-CPT on July 2nd, 2025
This article has been read and reviewed by the following members of BarBend's Expert Network. Our Expert Network is comprised of trainers, researchers, athletes, and medical professionals who help us review our content for accuracy and quality. Learn more by visiting our Experts portal.Expert Verified
Medically Reviewed By: Dr. Jennie Stanford, M.D., FAAFP, DipABOM
This article has been read and reviewed by the following members of BarBend's Expert Network. Our Expert Network is comprised of trainers, researchers, athletes, and medical professionals who help us review our content for accuracy and quality. Learn more by visiting our Experts portal.Expert Verified
Expert Contributor: Chelsea Rae Bourgeois, MS, RDN, LD
This article has been read and reviewed by the following members of BarBend's Expert Network. Our Expert Network is comprised of trainers, researchers, athletes, and medical professionals who help us review our content for accuracy and quality. Learn more by visiting our Experts portal.Expert Verified
Reviewed By: Kate Meier, NASM-CPT, USAW-L1, CF-L1

We receive free products and receive commissions through our links. See disclosures page.
  • Best Non-Stim Pre-Workouts
  • |
  • How We Chose
  • |
  • Benefits
  • |
  • What to Consider
  • |
  • FAQs

Many of the best pre-workout supplements pack high doses of caffeine, which may not jive with the diets and training schedules of many athletes. “Caffeine can stay in your system for several hours, so if you drink a caffeinated pre-workout mix in the afternoon or evening, you may have trouble falling or staying asleep,” says Dr. Raj Dasgupta, MD. Thankfully, many brands have begun to release caffeine-free alternatives. Rather than focusing on the energy boost, the best non-stim pre-workouts instead hone in on other aspects of the supplement, including workout endurance, blood flow, and more. 

“Pre-workouts can be an effective way to get the most benefit out of your workout sessions,” says Dr. Jennie Stanford, MD, FAAFP, DipABOM. “Many people associate pre-workouts with caffeine, but many non-stimulant pre-workout formulations are not only as effective as stimulants, but they also may provide other benefits, too.”

Of course, removing a key ingredient places added emphasis on other components to reap similar results. BarBend’s expert testers got their hands on dozens of different non-stim pre-workouts, using our hands-on supplement testing methodology to see which ones could deliver a pump without making our hearts flutter. With the help of our registered dietitian, we analyzed each non-stim pre-workout based on:

  • Ingredients: Are the ingredients clearly listed? Is the formulation free of proprietary blends for maximum transparency?
  • Dosages: Are the listed ingredients dosed appropriately to get the maximum benefits?
  • Third-party testing: Is the supplement tested by a reputable and independent third party lab to ensure label accuracy?
  • Value: Considering the ingredients, dosages, serving size, and effects, does the supplement feel worth its price?

To date, the BarBend team has helped 1.6 million athletes find high-quality nutritional supplements. Grab a steaming cup of decaf, relax, and dive into our picks for the best non-stim pre-workouts available today.

After looking into many different formulas, our best non-stim pre-workout overall was Transparent Labs Stim-Free.

The Best Non-Stim Pre-Workouts of 2025

  • Best Non-Stim Pre-Workout Overall: Transparent Labs Stim-Free
  • Best Budget Non-Stim Workout: Nutricost Pre-SF
  • Best Non-Stim Pre-Workout for Pump: Legion Pulse (Caffeine-Free)
  • Best Non-Stim Pre-Workout with Creatine: Gainful Non-Caffeinated Pre-Workout
  • Best Non-Stim Pre-Workout for Muscle Gain: Gorilla Mind Nitric
  • Best Non-Stim Pre-Workout for Cardio: 1st Phorm Endura-Formance
  • Best All-Natural Non-Stim Pre-Workout: Genius Pre

Medical Disclaimer: The content on BarBend is meant to be informative in nature, but it should not be taken as medical advice. The opinions and articles on this site are not intended for the diagnosis, prevention, and/or treatment of health problems. It’s always a good idea to talk to your doctor before beginning a new fitness, nutritional, and/or supplement routine. 

Experts Who Contributed

  • Dr. Jennie Stanford, MD, FAAFP, DipABOM
  • Chelsea Rae Bourgeois, M.S., RDN, LD
  • Jake Herod, NASM-CNC

Best Non-Stim Pre-Workouts Video Review

Join BarBend expert tester Jake Herod, NASM-CNC, and registered dietician nutritionist Chelsea Rae Bourgeois, MS, RDN, LD, as they discuss some of the best non-stim pre-workouts on the market in 2025, with a focus on pre-workouts from brands like Legion, Transparent Labs, and Onnit.

https://www.youtube.com/watch?v=XW7ubnaMY5o

Best Non-Stim Pre-Workout Overall: Transparent Labs Stim-Free

Best Non-Stim Pre-Workout Overall
Barbend Score:
We test and review fitness products based on an independent, multi-point methodology.
4.4
Transparent Labs Fat Burner Stim-Free
Transparent Labs Stim-Free Pre-Workout
Caffeine-free formula
Transparent dosing
Clinically dosed
Available for auto-delivery
Vegan-friendly ingredients
Yes
Check Price

Product Overview

Pros & Cons

Specs

Bottom Line

Pump Support
8g citrulline malate enhances blood flow and pumps.
Endurance Boost
4g beta-alanine helps delay muscle fatigue.
Focus Enhancer
Includes taurine and L-tyrosine for mental clarity.
Clean Formula
Free from artificial colors, sweeteners, and preservatives.
Pros
Completely free from caffeine or other stimulants
Clinically dosed ingredients
Transparent label with no proprietary blends
No artificial sweeteners, colors, or preservatives
Cons
May cause tingling due to beta-alanine
Lacks an immediate energy "kick" without caffeine
Pricier than some mainstream options
Limited flavor selection
Serving Size
20–23g per scoop, depending on flavor.
Beta-Alanine
4,000mg per serving.
Citrulline Malate
8,000mg per serving.
Price Per Serving
Approximately $1.67.
Transparent Labs Stim-Free Pre-Workout is a solid option for athletes avoiding caffeine but still looking to support performance and endurance. While it doesn’t provide a traditional energy boost, its clean label and evidence-backed ingredients make it a reliable pick.

Just because you’re exercising in the evening (or just don’t love caffeine), doesn’t mean you have to forego pre-workout completely. Enter, Transparent Labs Stim-Free Pre-Workout, which earned our title of best non-stim pre-workout overall after scoring a cumulative 4.3 out of 5, the highest of our tested supplements.

“If you are exercising in the evening, it is important to look for a non-stimulant pre-workout if you plan to take one because caffeine consumed later in the day can negatively impact your sleep,” says Dr. Jennie Stanford, MD, FAAFP, DipABOM. “Sleep is crucial not only for recovery but also overall metabolic and cognitive health.”

“I love that Transparent Labs’ Stim-Free pre-workout is free of artificial sweeteners, colors, and preservatives,” said Chelsea Rae Bourgeois, M.S., RDN, LD, while assessing the product for BarBend. Rating the formulation a 4.5 out of 5, she touted its BCAAs as a key component of her high score. The hearty dose of 4,000 milligrams of 2:1:1 BCAAs can also help boost endurance, improve recovery, and muscle building, too. (3)

She did, however, have a small issue with the pre-workout’s use of SenActiv, a patented blend of two adaptogenic compounds. The compounds themselves aren’t a concern but proprietary blends makes it hard to know how much you’re exactly consuming.

In terms of effects, one member of the BarBend team, a certified personal trainer, certainly feels the pump. “The pump is honestly insane,” they say. “The first time I used it, I thought my biceps and triceps were going to bust out of my arm.”

As far taste goes, we rate the mixture a 3 out of 5. “I opted for the Cherry Limeade,” says another tester. “It was definitely tart, but not overly sweet like I’ve experienced with other Transparent Labs flavors.” 

Transparent Labs Stim-Free Pre-Workout
Mixing Transparent Labs Stim-Free Pre-Workout
Our tester with Transparent Labs Stim-Free Pre-Workout
Transparent Labs Stim-Free Pre-Workout
Mixing Transparent Labs Stim-Free Pre-Workout
Our tester with Transparent Labs Stim-Free Pre-Workout

To unlock this perk, though, be sure to give this stim-free pre-workout a good mixing, as clumps and “floaties” were noticeable within our shaker bottles when it came time to hit the gym. As such, we give it a 2.75 out of 5 on our solubility scale, but our tester notes the “high-quality ingredients and ‘extras’ in the formula” weren’t diminished by a few loose chunks. 

“The tingles are fierce,” they say. “I get itchy fingertips and lips for roughly 10 to 15 minutes after a dose. It was a bit bracing at first.” For those sensitive to the tingling sensation, the four grams of beta-alanine may not be ideal. If that’s you, try something with less beta-alanine, like Nutricost Pre-SF.

Best for: Athletes who want a high-performance pre-workout free of artificial sweeteners, colors, and preservatives.

Read More

Read our full Transparent Labs Stim-Free Review.

Best Budget Non-Stim Pre-Workout: Nutricost Pre-SF

Best Budget Non-Stim Pre-Workout
Nutricost Stim-Free Pre-Workout
Nutricost Pre-SF Pre-Workout
Stimulant-free
Budget-friendly
Third-party tested
Subscribe and save available
Not plant-based
Yes
Subscribe & save for up to 15% off See Details
Check Price

Product Overview

Pros & Cons

Specs

Bottom Line

Budget-Friendly
Offers an affordable option for stimulant-free workouts.
Simple Formula
Focused ingredient list for basic performance support.
No Jitters
Free from caffeine and stimulants to avoid crash or jitters.
Mixes Easily
Dissolves well in water for quick preparation.
Pros
Stimulant-free, suitable for late-day workouts.
Contains clinically dosed performance ingredients.
Affordable price point.
Third-party tested for quality assurance.
Cons
May cause tingling sensation due to Beta-Alanine content.
Lacks the immediate energy boost provided by caffeine.
Limited to pre-workout supplementation; lacks post-workout recovery ingredients.
Flavor may not appeal to all users.
Beta-Alanine
Delivers 3.2 g of beta-alanine per serving.
Citrulline Malate
Contains 6 g to support endurance and pump.
Servings Per Contain
Each container has 30 servings.
Caffeine
Caffeine-free formula for stimulant-free performance.
Nutricost Pre-SF Pre-Workout offers a stimulant-free option for athletes seeking to enhance performance without the use of caffeine. Its clean formula and effective ingredients make it a solid choice for those looking to support endurance and blood flow during workouts.

From a cost perspective, Nutricost Pre-SF is among the most budget-friendly non-stim pre-workouts, thanks to the sub-$1 price per serving. Other non-stim pre-workouts typically cost between $1.50 and $2.50 per dose, so having a tub that doesn’t cost you heavily for each training session is a definite plus. Our team gave this product a solid 5 out of 5 for cost.

Within this non-GMO, vegan-friendly formulation, you’ll find six grams of L-citrulline, which studies show can help improve nitric oxide production, leading to better blood flow and a more filling aesthetic in between sets. (7) We also like that this value is in line with the clinically-researched dose. (2)

Our tester drinking a blend of Nutricost Pre-X Pre-Workout
Our tester drinking a blend of Nutricost Pre-Workout

Nutricost Pre-SF comes in three different flavors, including Blue Raspberry, Peach Mango, and Pink Lemonade. However many customers noticed that the product did leave some floating bits even after mixing in a shaker cup, so we had to give the solubility a 3.5 out of 5 rating.

Generally, we like the ingredient dosage of this formula; however, we did notice that Nutricost uses sucralose to sweeten their product. For that, we rate the formulation a 3.5 out of 5. In some cases, artificial sweeteners can cause digestive unrest, so if you have a sensitive stomach, try something like Transparent Labs Stim-Free Pre-Workout.

Best for: Athletes who need to keep their supplement costs low.

Read More

Best Non-Stim Pre-Workout for Pump: Legion Pulse (Caffeine-Free)

Best Non-Stim Pre-Workout for Pump
Barbend Score:
We test and review fitness products based on an independent, multi-point methodology.
4.5
A container of Legion Pulse Preworkout drink.
Legion Pulse Non-Stim Pre-Workout
Stim-free
Clinically dosed
Naturally sweetened
100% money-back guarantee
Yes (Labdoor)
Lab-tested for label accuracy and purity
Check Price

Product Overview

Pros & Cons

Specs

Bottom Line

Pump Focused
Designed to maximize nitric oxide production and vascularity.
High Dosing
Formulated with large clinical doses for optimal effects.
Clean Profile
Naturally sweetened with no artificial flavors or dyes.
Science-Backed
Uses evidence-based ingredients in effective amounts.
Pros
8g of citrulline malate may help with pump
All-natural ingredients
Contains alpha-GPC instead of caffeine
Cons
No unflavored option
Only 20 servings per container
L-Citrulline
Includes 8 g per serving for serious pump support.
Beta-Alanine
Contains 3.6 g to help buffer fatigue during workouts.
Alpha-GPC
Provides 300 mg to support focus and mind-muscle connection.
Caffeine
Completely free of caffeine or other stimulants.
This pre-workout supplement can come with or without caffeine and in 16 different flavors. Each serving provides 350 milligrams of L-theanine and eight grams of citrulline, which may facilitate better pumps.

After testing dozens of their products over the years, we’ve become big fans of Legion, a supplement company that foregrounds transparency with clear labeling, third-party testing, and a total lack of proprietary blends. The non-stim version of Legion’s Pulse pre-workout wins for boosting blood flow and supplying a pump, thanks to the 8,000 milligrams of l-citrulline. (7) We’ve also earmarked regular variety of Pulse as one of the strongest pre-workouts available.

“I love that Legion Pulse is available with or without caffeine, and there’s no added sugar, food dyes, or other chemicals,” says Chelsea Rae Bourgeois, M.S., RDN, LD, while assessing the product for BarBend. “Plus, It’s third-party tested for safety, giving you that extra peace of mind.” She rates the formulation a 4.5 out of 5. 

“Usually I go with pre-workouts with caffeine for a pump,” one of our testers says, rating its overall effects 4.5 out of 5. “I’ve always been skeptical of non-stim options, but not anymore. Honestly, the beta-alanine in Pulse gives me the same pump as others with stimulants.”

Aside from caffeine and l-theanine, this version of Pulse contains the same ingredients as its counterpart, including a 300-milligram dose of alpha-glycerylphosphorylcholine (alpha-GPC). According to some studies, this ingredient can help compensate for a lack of caffeine by potentially increasing motivation and enhancing cognitive performance in individuals. (8)(9)

Our tester holds a scoop of Legion Pulse Pre-Workout.
Our tester dumps a scoop of Legion Pulse Pre-Workout into a shaker bottle.
Our tester holds a scoop of Legion Pulse Pre-Workout.
Our tester dumps a scoop of Legion Pulse Pre-Workout into a shaker bottle.

As is the case with all of Legion’s products, the ingredients list on this supplement is appealingly slim, with no artificial sweeteners, food dyes, or added sugars.

We were mixed on the taste of the uncaffeinated Pulse. “I think it’s got a nice sweetness, but there is a bitter quality and the sweetener can leave a bit of an odd aftertaste,” says our tester, who rates its taste a 4 out of 5. You’ll find plenty of variety, though, as there are currently eight flavors available. We do, however, wish there was an unflavored option.

We’re also disappointed that each tub contains just 20 servings, which is 10 less than you’ll find in non-stim pre-workouts like Transparent Labs Non-Stim or 1st Phorm Endura-formance. Considering it costs $2.25 per serving, which is between $0.25 and $0.75 cents more per serving than other top pre-workouts, we rated its value a 2 out of 5.

Best for: Athletes who value ingredient transparency just as much as a strong pump.

Read More

Read our full Legion Pulse Pre-Workout Review. 

Best Non-Stim Pre-Workout with Creatine: Gainful Non-Caffeinated Pre-Workout

Best Non-Stim Pre-Workout with Creatine
Barbend Score:
We test and review fitness products based on an independent, multi-point methodology.
4
gainful pre-workout
Gainful Customized Pre-Workout
Customizable
Plant-based
Caffeine options
Subscribe and save available
Third-party tested but not specified
Check Price

Product Overview

Pros & Cons

Specs

Bottom Line

Personalized Formula
Custom-built to your fitness goals and dietary needs.
Clean Ingredients
Free of artificial sweeteners, flavors, and dyes.
Creatine Support
Includes creatine for strength and power output.
Flavor Boosters
Comes with individual flavor packets for taste variety.
Pros
Personalized to individual needs
Clean, plant-based ingredients
Multiple caffeine options
Variety of flavors
Cons
Subscription model may not suit all users
Not third-party tested
Higher price point
Beta-alanine may cause tingling sensation
Creatine Monohydrate
Typically includes 5 g, tailored per profile.
Beta-Alanine
Commonly provides 2 to 3 g based on customization.
Servings Per Bag
Approximately 28 servings, depending on the mix.
Caffeine
Stim-free option excludes caffeine entirely.
Gainful Pre-Workout offers a customizable, clean supplement option tailored to individual fitness goals and dietary preferences. While it provides flexibility in caffeine content and flavor, the subscription model and lack of third-party testing may be considerations for some users.

Taking creatine and a non-stim pre-workout supplement already? Maybe you want to combine the two? You’ve come to the right place. We think Gainful Pre-Workout is the best pre-workout with creatine because its customizable formula comes in both caffeinated and non-caffeinated options. Just keep in mind that, as of this writing, the non-stim option tops out at 3 grams of creatine per serving, while the caffeinated versions can reach up to 5 grams.

“I like that Gainful offers a choice between moderate and high-intensity pre-workout, with the latter containing a bit more leucine, creatine, and caffeine. You also have the option to nix the caffeine entirely if caffeine jitters aren’t your jam at the gym,” says our expert reviewer Chelsea Rae Bourgeois. I also like that there aren’t any artificial ingredients or an outrageous amount of sugar in their formula.”

“The 4 grams of citrulline malate per serving is on the low end of what research highlights as an effective dose. Same with the 1.5 g of beta-alanine,” Bourgeois adds, rating its formula 3 out of 5. “Also, you can only get a caffeine-free version with the moderate-intensity formula, meaning your options are more limited if you need to cut back on the caffeine.”

Our tester scoops up some Gainful Pre-Workout.
Gainful Pre-Workout Open Jar
Our tester makes a shake with Gainful Pre-Workout.
Gainful Pre Workout Supplement Facts
Our tester scoops up some Gainful Pre-Workout.
Gainful Pre-Workout Open Jar
Our tester makes a shake with Gainful Pre-Workout.
Gainful Pre Workout Supplement Facts

BarBend editorial member and certified personal trainer Alex Polish thinks the lack of stimulants makes it great for night owl workouts. “I often get in my workouts after we put our toddler to bed. I want the focus and energy, but not to stay up all night from caffeine,” they say. “Plus, there isn’t a drop-off mid-workout like there can be with more intense pre-workouts.”

This non-caffeinated pre-workout is a pretty well-rounded blend, also boasting citrulline, BCAAs, and beta-alanine. Polish also likes — not loves — the taste. “I use the Watermelon flavor and, honestly, it doesn’t really taste like watermelon, which made me a bit sad. It wasn’t bad — just a shot of sweetness,” they say. “I’d give it a 4 out of 5 for flavor because it’s got a bit of that stevia aftertaste, but it wasn’t overly sweet.” If you want a similar formulation with even more flavor choices, we recommend Gorilla Mode Nitric.

Scouring the market for a pre-workout that is both non-caffeinated and contains creatine is no easy feat. Gainful Non-Caffeinated Pre-Workout is customizable to be both (or neither!) — a rare find, if we do say so ourselves. We think the price is reasonable for this as well; at $1.86 per serving, we rate value a solid 4 out of 5.

Best for: Athletes who want a customizable non-stim pre-workout option.

Read More

Best Non-Stim Pre-Workout for Muscle Gain: Gorilla Mode Nitric

Best Non-Stim Pre-Workout for Muscle Gain
Barbend Score:
We test and review fitness products based on an independent, multi-point methodology.
4.2
Gorilla Mode Nitric
Gorilla Mind Gorilla Mode Nitric
Stimulant-free
Massive pumps
Clinically dosed
Stim-free
Not third-party tested
Check Price

Product Overview

Pros & Cons

Specs

Bottom Line

High-Stim Alternativ
Delivers intense pumps and focus without caffeine.
Massive Doses
Packed with high amounts of nitric oxide boosters.
Workout Volume
Supports performance for long, intense training sessions.
Flavor Variety
Available in multiple flavors for taste preference.
Pros
10 g L-citrulline for serious nitric oxide support
Creatine, betaine, and GlycerPump for added endurance and fullness
Zero stimulants—train any time of day
Fully dosed and stackable with other pre-workouts
Cons
Two-scoop serving uses product quickly
Not third-party tested
Powder may clump due to high glycerol content
Strong pump may not appeal to all athletes
L-Citrulline
Loaded with 10 g per serving for peak vasodilation.
GlycerPump
Includes 3 g to enhance hydration and muscle fullness.
Creatine Monohydrate
Delivers 5 g to support muscle growth and recovery.
Caffeine
Entirely stimulant-free formula.
Gorilla Mode Nitric is a high-powered, stim-free pre-workout loaded with clinical doses of nitric oxide boosters and cell volumizers. It’s a top pick for lifters chasing pumps and performance—without the jitters or crash of caffeine.

If your main focus for supplementation is building strength and improving recovery, you’ll want a pre-workout that’s stacked with ingredients that support both. This pre-workout is dosed with creatine, which can help improve muscle strength, size, and performance.

“I like that you have flexibility with your dose and that the ingredients are third-party tested,” according to Chelsea Rae Bourgeois, RDN, rating the formulation a 4 out of 5. “There’s no caffeine, but it will likely put a pep in your step as you tackle your workout.”

One member of our team, a certified personal trainer, says feels that pep when they opt for a two-scoop serving. “With just one scoop, I barely notice a pump, but with two — yowza,” they say. “I also love the mental clarity that comes with it. Sometimes I want to check out between sets and scroll on my phone or something, but I think this helps me stay locked in.”

Bourgeois likes that Gorilla Mode Nitric provides ingredient information for both one- and two-scoop doses. “I also appreciate that many of the ingredients are included in evidence-based doses,” she says.

Our tester also gives the taste a 4 out of 5 rating. “The Bombsicle flavor tastes exactly like a bombsicle popsicle. I even blend it up with ice to trick myself into thinking it’s a popsicle,” they add. You could, however, notice a sickly sweet aftertaste. Gorilla Mode Nitric uses the artificial sweetener sucralose, which can leave an odd aftertaste and, in some cases, may cause a little digestive unrest. For a non-stim pre-workout without sucralose, we recommend Transparent Labs Stim-Free Pre-Workout.

Where cost is concerned, this one earned a 4 out of 5. One 40-serving container costs $59.99, which is about $1.49 per serving. This certainly isn’t the most expensive product on our list but it’s not the absolute most budget-friendly you can find either.

Best for: Athletes who want a non-stim pre-workout to help support muscle gain.

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Best Non-Stim Pre-Workout for Cardio: 1st Phorm Endura-Formance

Best Non-Stim Pre-Workout for Cardio
1st Phorm Endura-Formance
1st Phorm Endura-Formance
Has creatine
Caffeine-free
Electrolytes
Free shipping over $75
Subscriptions available
Check Price

Product Overview

Pros & Cons

Specs

Bottom Line

Endurance Support
Designed to improve aerobic performance and training duration.
Electrolyte Blend
Includes key minerals to support hydration and output.
Muscle Recovery
Formulated with creatine and beta-alanine for post-workout repair.
Taste Variety
Offered in several flavors to suit different palates.
Pros
Stimulant-free
Includes electrolytes and adaptogens for added workout support
Cons
Has sucralose
Some may not like tingling sensation
Premium price point
Few flavor options
PeakO2 Blend
Contains 1 g of adaptogenic mushroom blend per serving.
Creatine Monohydrate
Provides 5 g to enhance strength and endurance.
Beta-Alanine
Includes 3.2 g for buffering lactic acid during cardio.
Caffeine
100% caffeine-free for stimulant-sensitive users.
1st Phorm Endura-Formance offers a comprehensive pre-workout solution for athletes seeking to enhance endurance, strength, and recovery without caffeine. Its clinically dosed ingredients and inclusion of adaptogens and electrolytes make it a unique choice for caffeine-free performance optimization.

Pre-workouts aren’t just for strength athletes. As its name suggests, Endura-Formance is formulated to help you push longer and harder, making it a one the best supplements for runners. If you’re training for a marathon, you may benefit from a scoop before hitting the pavement. 

As our tester notes, Endura-Formance has a couple compounds you won’t see in many other pre-workouts: PeakO2 and S7. PeakO2 is composed of six adaptogenic mushrooms, including cordyceps militaris, which research has shown may have positive effects on aerobic performance and training volume for endurance athletes. (10) S7, meanwhile, is a combination of seven nutraceuticals that can significantly increase nitric oxide production, per a 2021 study. (11)

“To be honest, I don’t know if it’s actually working or if it’s the placebo effect, but I’ve been training for a triathlon and I can definitely feel it helping,” says our tester, rating its effects a 5 out of 5.

After assessing the supplement for BarBend, Chelsea Rae Bourgeois, M.S., RDN, LD, says that while she appreciates these ingredients for their potential to “improve oxygen uptake and utilization,” they are proprietary blends, meaning it’s unclear how much of each ingredient is included in each blend. Still, she rates the overall formulation a 4.25 out of 5, with a special shout-out for its “science-backed doses” of creatine monohydrate and beta-alanine.

Our tester enjoys other benefits from the supp’s blend of creatine, beta-alanine, betaine anhydrous, and L-tyrosine. “I use it for cardio, but I’ve pretty much started taking it before all of my workouts,” they say. “It’s particularly great for endurance, though, since it has a solid 195 milligrams of sodium.”

“The Berry Lemonade flavor is excellent,” they say, scoring its taste 4.5 out of 5. “I find it slightly tart and not overly sweet. Also, no strange aftertaste.” We ding it one point for solubility — 4 out of 5 — as we are often left with a few loose chunks. For a smoother non-stim pre-workout, we recommend Genius Pre.

Best for: Athletes who need a pre-workout for endurance training.

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Best All-Natural Non-Stim Pre-Workout: Genius Pre

Best All-Natural Non-Stim Pre-Workout
Genius Pre-Workout
Genius Pre
All-natural formula
Brain-boosting focus
Caffeine-free
Subscribe on Amazon
Yes
No
Check Price

Product Overview

Pros & Cons

Specs

Bottom Line

Natural Formula
Free from artificial sweeteners, colors, and additives.
Cognitive Boost
Includes ingredients like Alpha-GPC for mental clarity.
Plant-Based Focus
Vegan-friendly and formulated with botanical compounds.
Versatile Use
Supports strength training, cardio, and overall fitness.
Pros
Uses natural, non-GMO ingredients
Enhances mental focus and clarity
Caffeine-free and stimulant-free
Vegan-friendly formula
Cons
Pricier than many budget options
Not third-party tested
No creatine or beta-alanine
Limited availability in some flavors
Alpha-GPC
Delivers 600 mg for enhanced cognitive performance.
L-Citrulline Malate
Includes 6 g to support pumps and endurance.
Rhodiola Rosea
Contains 500 mg for stress and fatigue reduction.
Caffeine
Completely free of caffeine and stimulants.
Genius Pre is a clean, stimulant-free pre-workout that prioritizes natural ingredients and mental clarity. It’s a solid pick for those avoiding caffeine, though it may not include muscle power staples like creatine or beta-alanine.

All the best natural pre-workouts feature some of the cleanest blends you can buy for fueling up before training. In addition to being a caffeine-free pre-workout, Genius Pre contains no artificial flavors or added sugars. Instead, its strength-enhancing formulation is rounded out with ingredients like alpha-GPC and Rhodiola rosea that may improve both your physical and cognitive performance. (12)(13)

Highlights within the formulation include 6,000mg of citrulline malate, a non-essential amino acid which has been suggested to enhance recovery and performance due to its potential to increase nitric oxide production and L-arginine bioavailability. (7) As for AlphaSize (alpha-GPC), it’s often described as a “mind-to-muscle” ingredient, with research showing that it can boost brain metabolism, improve mental focus, and lead to enhanced muscle performance. (12)

Our tester drinking Genius Pre-Workout.
Genius Pre-Workout
Our tester mixing Genius Pre
Our tester drinking Genius Pre-Workout.
Genius Pre-Workout
Our tester mixing Genius Pre

“Genius Pre is marketed as a powerhouse pre-workout, and I think the motto fits,” says Chelsea Rae Bourgeois, a registered dietitian, when assessing the product for BarBend. “I like that Genius prioritizes L-citrulline malate in this pre-workout. Each serving contains 6 grams, the upper end of what research has found to be beneficial in these types of supplements.” 

She rates the formulation a 4 out of 5, dinging it slightly for the lack of clarity of what’s included in its proprietary blends. “While a lot of the proprietary blends used in Genius Pre are becoming more common in the market, I still prefer to know exactly what is in the supplements I’m taking,” she says.

Our tester certainly feels its benefits. “I would honestly describe the effects as euphoric, like I took a mood enhancer,” they say. “Since there’s no caffeine, I felt relaxed instead of stimulated.” They also experienced minimal jitters, noting the 2,000 milligram dose of beta-alanine, which is 1,000 to 2,000 milligrams less than you’ll find in other non-stim pre-workouts. However, if you do like the tingly feeling associated with beta-alanine, we’d recommend the Transparent Labs Stim-Free Pre-Workout.

[Related: Coffee vs. Pre-Workout]

After taking the pre-workout, our tester worked their upper back and noticed a considerable pump in the shoulders, though it only lasted until shortly after the workout. They rate its effectiveness a 4 out of 5, adding that they’d not only take it again before a workout, but also to just “boost my focus throughout the day.”

We also love the flavors and consistency, rating both its taste and solubility a 5 out of 5. “I tried the Blue Raspberry and loved how it sort of tasted like a blue ICEE,” they say, calling it one of the “best-tasting pre-workouts I’ve ever had — and I’ve tried well over 50 pre-workouts.” 

Best for: Athletes who want a great-tasting pre-workout with a natural blend of ingredients.

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How We Tested and Chose the Best Stim-Free Pre-Workouts

The BarBend team is made up of competitive athletes, certified personal trainers, and lifelong fitness enthusiasts. To determine the best non-stim pre-workouts available today, we’ve tested 68 different products using BarBend‘s supplement testing methodology to rate each on a scale of 1 (lowest) to 5 (highest). Below are some of the categories and components that played into our rankings.

  • Ingredient Formulation: Non-stim pre-workouts require other ingredients to offset the lack of ingredients like caffeine, and those results can’t be achieved without researched-backed dosages. (2) When looking at the best-performing stim-free pre-workouts, we want to ensure that most vital ingredients are served in an effective manner.
  • Solubility: A pre-workout powder is sort of useless if it can’t mix properly before hitting the weights, right? To test this, we employed multiple preparation methods to see which supplements dissolved easily.
  • Price Per Serving: The best stim-free pre-workouts cost between $1.50 and $2.50 per serving. We’ve done our best to give you a solid blend of budget-friendly and splurge-worthy options.
  • Taste & Flavor Options: As subjective as taste can be, we still think it’s a worthwhile component to call out with certain pre-workouts. We tried to pick products that offered as many flavors as possible.

Common Ingredients In Non-Stim Pre-Workouts

Before buying a new pre-workout, it’s important to understand common pre ingredients and their purposes. “Pre-workout supplements should be free of proprietary blends and artificial sweeteners and colors,” says Dr. Raj Dasgupta, MD. When you have that base knowledge, you can make an informed decision about which formula and ingredient list may be best suited for your workout needs.

Betaine

Betaine is made in the body and can also be found in food sources like beets, broccoli, and shellfish. Betaine may be good for increasing strength and power, as two studies found proper supplementation to increase both disciplines by almost 25 percent. (14)

Beta-Alanine

Beta-alanine has been suggested to delay muscular fatigue, and enhance physical performance, especially in high-intensity anaerobic workouts. (15) The effective dose for beta-alanine is between 3,200mg and 6,400mg per day, but we recommend opting for a lighter serving if you find tingles to be unpleasant. (16)

BCAAs

BCAAs are typically found in a 2:1:1 ratio and are most commonly utilized to help increase muscle growth. More BCAA benefits include enhanced exercise performance and reduced fatigue, plus they can help speed up repair muscle damage after post-workout. (17) 

Citrulline

Citrulline may help produce more nitric oxide in your system, improving blood flow. It has may also help enhance performance and recovery. (7) A clinically effective dose of citrulline is considered to be about 6,000mg per day. (2)

Creatine

Creatine is a very popular supplement and is commonly used as a driver for improved muscle growth. Creatine has been shown, in various studies, to help improve performance and muscle mass in consistent users. (18)

The suggested dose of creatine will vary based on your size, muscle mass, and type of creatine, but in general, common recommendations fall between 3,000mg and 5,000mg per day after a loading period. (6) But be warned: “Creatine can cause gas-related side effects like bloating and belching, though this is usually temporary and most often reported during the loading period,” says Dr. Christopher Mohr, PhD, RD.

Benefits of Non-Stim Pre-Workouts

Outside of the obvious exclusion of a stimulating ingredient like caffeine, stim-free pre-workouts can be just as influential on your workout experience as their original counterparts. Below are just a handful of the top perks that can be reaped from supplementing with these powerful powders.

  • Improved Blood Flow: Non-stim pre-workouts may help you achieve a pump through high doses of key ingredients like citrulline, arginine, betaine (beetroot), and other nitric oxide boosters. (19)(20)
  • Longer Muscular Endurance: Beta-alanine, creatine, and betaine are commonly used to help potentially improve endurance and power. (21)(15)
  • Better Focus: Common ingredients like tyrosine, taurine, alpha-GPC, and theanine may help improve focus. (22)(23) Other nootropics, like Huperzine A, can also be used and have been backed by promising studies supporting its effect on cognitive function. (24)

How Much Do the Best Non-Stim Pre-Workouts Cost?

Non-stim pre-workouts tend to cost roughly the same as the average pre-workout, which we’ve found to cost between $1 and $2 per serving. Though a few picks on our list are above that range, the same goes for their caffeinated counterparts. As you can see in the below chart, our picks range in cost between 90 cents and $2.25 per serving. 

Best Non-Stim Pre-Workout OverallTransparent Labs Stim-Free$1.66 per serving
Best Budget Non-Stim Pre-WorkoutNutricost Pre-SF$0.89 per serving
Best Non-Stim Pre-Workout for PumpLegion Pulse (Caffeine-Free)$2.25 per serving
Best Non-Stim Pre-Workout with CreatineGainful Non-Caffeinated Pre-Workout$1.86 per serving
Best Non-Stim Pre-Workout for Cardio1st Phorm Endura-Formance$1.50 per serving
Best All-Natural Non-Stim Pre-WorkoutGenius Pre$1.90 per serving

What to Consider Before Buying a Non-Stim Pre-Workout

We’ve had our hands on a number of stim-free pre-workouts over the years, and in that time we’ve learned how to best connect our purchases to our intended performance. Below are a few factors to keep in mind when searching for that ideal supplement for your setup.

Personal Goals

Depending on your goals, you may want more specific ingredients in your non-stim pre-workout. For example, if you intend to focus on gaining muscle, it may be wise to opt for a non-stim option with a heavy presence of creatine or other muscle-building ingredients.

Genius Pre-WorkoutGenius Pre-Workout

If you’re trying to withstand long, extensive sessions, look for formulations that cater to such a training style. Think about your pre-workout as just a piece of your training puzzle — the right piece with all the matching details is going to give you the best picture in the end.

Ingredients

Like your goals and aspirations, it’s important to think about your tolerances to certain ingredients as well as potential pre-workout side effects, especially when stim-free pre-workouts can vary in robustness. If you’re sensitive to beta-alanine, for example, or want to avoid excessive tingling altogether, try to find a formulation with less beta-alanine present.

We also recommend taking your experience with pre-workouts into consideration, as this can help dictate whether you’re ready for a more extensive ingredients list. Those embarking on a beginner workout plan athletes may want to ease into pre-workout supplementation at first to help get a better understanding of what’s at play within each sip.

Research-Backed Dosages

Just because a non-stimulant pre-workout lists a key ingredient in its makeup doesn’t mean it can deliver a standard effect. The performance of these components are all reliant on proper dosing within each serving, so be sure to check whether your chosen pre-workout can leave you with just the right amount of boost for a given workout. We’ve listed many of the suggested daily dosages for key pre-workout components throughout this guide, but here’s a quick reminder for added clarity on some of the major ingredients:

  • Creatine: 3-5 grams
  • Citrulline: 3-6 grams 
  • Citrulline Malate: 6–8 grams 
  • Beta-Alanine: 3-6 grams

Price

The price of a pre-workout will fluctuate, but it should never break the bank. It’s important to figure out what your budget is and find a pre-workout that fits your budget. We also recommend looking at the price per serving, as this can be a good point of comparison between otherwise identical products.

Best Non-Stim Pre-Workout FAQs

Will I still get the benefits of a pre-workout without any stimulants?

Yes. The ingredients in pre-workouts aren’t only beneficial when paired with stimulants. If your main goal from a pre-workout is to obtain energy, you may want to opt for a pre that contains natural sources of energy, like ginseng. There are many potentially effective ingredients in pre-workouts — not just stimulants.

Do non-stimulant pre-workouts make you jittery?

Everyone reacts differently to the formulas of non-stimulant pre-workouts, but in general, they lack the ingredients that cause people to feel jittery. Those include caffeine, yohimbine, theobromine, and theacrine. Some supplements marketed as non-stimulant may contain low doses of these ingredients, so keep an eye out if you’re sensitive to stimulants.

What is the best non-stim pre-workout?

The best non-stim pre-workout is subjective to each athlete. However, we currently view Legion’s Caffeine-Free Pulse Pre-Workout as the best of the bunch thanks to its robust formulation to boost physical and cognitive performance, including 8,000 milligrams of citrulline malate — a non-essential amino acid that has been linked to improved blood flow and improved recovery time post-workout. (3)(18)

How much do non-stim pre-workouts cost?

Non-stim pre-workouts range from around $40 to over $60 per container, but that’s only part of the story. When looking at the prices of any supplement (and especially pre-workouts), it’s important to note how many servings are included in the container. Generally, you can expect to spend between $1.50 and $2.50 per serving for top-tier non-stim pre-workouts like the ones on this list.

Why should I take a non-stim pre-workout?

There can be a variety of reasons why someone would opt for a stim-free pre-workout. Some people work out later in the evening and don’t want their sleep to be impacted by taking a stimulant too late at night. Other people may be sensitive to caffeine or stimulants, and not like the way it makes them feel. Some people may also prefer to get their stimulants from a cup of coffee or green tea.

When is the best time to take my non-stim pre-workout?

Much like the name suggests, a stim-free pre-workout is most effective when taken before your workout. Although some supplement companies may give you a “best” window, many supp companies tell you to take your pre-workout about 30 minutes before your workout begins, so the ingredients have time to potentially kick in before your training.

References

  1. Kaczka P, Batra A, Kubicka K, et al. Effects of Pre-Workout Multi-Ingredient Supplement on Anaerobic Performance: Randomized Double-Blind Crossover Study. Int J Environ Res Public Health. 2020;17(21):8262. Published 2020 Nov 9. https://doi:10.3390/ijerph17218262 
  2. Glenn, J. M., Gray, M., Wethington, L. N., Stone, M. S., Stewart, R. W., Jr, & Moyen, N. E. (2017). Acute citrulline malate supplementation improves upper- and lower-body submaximal weightlifting exercise performance in resistance-trained females. European journal of nutrition, 56(2), 775–784. https://doi.org/10.1007/s00394-015-1124-6  
  3. Rahimi MH, Shab-Bidar S, Mollahosseini M, Djafarian K. Branched-chain amino acid supplementation and exercise-induced muscle damage in exercise recovery: A meta-analysis of randomized clinical trials [published correction appears in Nutrition. 2018 Mar;47:115. https://doi: 10.1016/j.nut.2017.10.012]. Nutrition. 2017;42:30-36. https://doi:10.1016/j.nut.2017.05.005 
  4. Puente-Fernández, J., Seijo, M., Larumbe-Zabala, E., Jiménez, A., Liguori, G., Rossato, C. J. L., Mayo, X., & Naclerio, F. (2020). Effects of Multi-Ingredient Preworkout Supplementation across a Five-Day Resistance and Endurance Training Microcycle in Middle-Aged Adults. Nutrients, 12(12), 3778. https://doi.org/10.3390/nu12123778
  5. Lee MC, Hsu YJ, Shen SY, Ho CS, Huang CC. A functional evaluation of anti-fatigue and exercise performance improvement following vitamin B complex supplementation in healthy humans, a randomized double-blind trial. Int J Med Sci. 2023;20(10):1272-1281. Published 2023 Aug 15. https://doi:10.7150/ijms.86738 
  6. Naderi A, de Oliveira EP, Ziegenfuss TN, Willems MT. Timing, Optimal Dose and Intake Duration of Dietary Supplements with Evidence-Based Use in Sports Nutrition. J Exerc Nutrition Biochem. 2016;20(4):1-12. https://doi:10.20463/jenb.2016.003 1
  7. Gonzalez AM, Trexler ET. Effects of Citrulline Supplementation on Exercise Performance in Humans: A Review of the Current Literature. J Strength Cond Res. 2020;34(5):1480-1495. https://doi:10.1519/JSC.0000000000003426 
  8. Kansakar U, Trimarco V, Mone P, Varzideh F, Lombardi A, Santulli G. Choline supplements: An update. Front Endocrinol (Lausanne). 2023;14:1148166. Published 2023 Mar 7. https://doi:10.3389/fendo.2023.1148166 
  9. Tamura Y, Takata K, Matsubara K, Kataoka Y. Alpha-Glycerylphosphorylcholine Increases Motivation in Healthy Volunteers: A Single-Blind, Randomized, Placebo-Controlled Human Study. Nutrients. 2021;13(6):2091. Published 2021 Jun 18. https://doi:10.3390/nu13062091 
  10. Hirsch KR, Mock MG, Roelofs EJ, Trexler ET, Smith-Ryan AE. Chronic supplementation of a mushroom blend on oxygen kinetics, peak power, and time to exhaustion. J Int Soc Sports Nutr. 2015;12(Suppl 1):P45. Published 2015 Sep 21. https://doi:10.1186/1550-2783-12-S1-P45 
  11. Nemzer, Boris & Fink, Nelli & Fink, Bruno. (2014). New insights on effects of a dietary supplement on oxidative and nitrosative stress in humans. Food Science & Nutrition. 2. https://doi:10.1002/fsn3.178.  
  12. Bellar D, LeBlanc NR, Campbell B. The effect of 6 days of alpha glycerylphosphorylcholine on isometric strength. J Int Soc Sports Nutr. 2015;12:42. Published 2015 Nov 17. https://doi:10.1186/s12970-015-0103-x 
  13. Ivanova Stojcheva E, Quintela JC. The Effectiveness of Rhodiola rosea L. Preparations in Alleviating Various Aspects of Life-Stress Symptoms and Stress-Induced Conditions-Encouraging Clinical Evidence. Molecules. 2022;27(12):3902. Published 2022 Jun 17. https://doi:10.3390/molecules27123902 
  14. Arazi, H., Aboutalebi, S., Taati, B., Cholewa, J. M., & Candow, D. G. (2022). Effects of short-term betaine supplementation on muscle endurance and indices of endocrine function following acute high-intensity resistance exercise in young athletes. Journal of the International Society of Sports Nutrition, 19(1), 1–16. https://doi.org/10.1080/15502783.2022.2041988  
  15. Saunders B, Elliott-Sale K, Artioli GG, et al. β-alanine supplementation to improve exercise capacity and performance: a systematic review and meta-analysis. Br J Sports Med. 2017;51(8):658-669. https://doi:10.1136/bjsports-2016-096396 
  16. Trexler, E. T., Smith-Ryan, A. E., Stout, J. R., Hoffman, J. R., Wilborn, C. D., Sale, C., Kreider, R. B., Jäger, R., Earnest, C. P., Bannock, L., Campbell, B., Kalman, D., Ziegenfuss, T. N., & Antonio, J. (2015). International society of sports nutrition position stand: Beta-Alanine. Journal of the International Society of Sports Nutrition, 12, 30. https://doi.org/10.1186/s12970-015-0090-y 
  17. Arroyo-Cerezo, A., Cerrillo, I., Ortega, Á., & Fernández-Pachón, M. S. (2021). Intake of branched chain amino acids favors post-exercise muscle recovery and may improve muscle function: optimal dosage regimens and consumption conditions. The Journal of sports medicine and physical fitness, 61(11), 1478–1489. https://doi.org/10.23736/S0022-4707.21.11843-2 
  18. Wu SH, Chen KL, Hsu C, et al. Creatine Supplementation for Muscle Growth: A Scoping Review of Randomized Clinical Trials from 2012 to 2021. Nutrients. 2022;14(6):1255. Published 2022 Mar 16. https://doi:10.3390/nu14061255 
  19. Figueroa A, Wong A, Jaime SJ, Gonzales JU. Influence of L-citrulline and watermelon supplementation on vascular function and exercise performance. Curr Opin Clin Nutr Metab Care. 2017;20(1):92-98. https://doi:10.1097/MCO.0000000000000340 
  20. Wu G, Meininger CJ, McNeal CJ, Bazer FW, Rhoads JM. Role of L-Arginine in Nitric Oxide Synthesis and Health in Humans. Adv Exp Med Biol. 2021;1332:167-187. https://doi:10.1007/978-3-030-74180-8_10 
  21. Kreider RB, Kalman DS, Antonio J, et al. International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. J Int Soc Sports Nutr. 2017;14:18. Published 2017 Jun 13. https://doi:10.1186/s12970-017-0173-z 
  22. Steenbergen L, Sellaro R, Hommel B, Colzato LS. Tyrosine promotes cognitive flexibility: evidence from proactive vs. reactive control during task switching performance. Neuropsychologia. 2015;69:50-55. https://doi:10.1016/j.neuropsychologia.2015.01.022 
  23. Jongkees BJ, Hommel B, Kühn S, Colzato LS. Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands–A review. J Psychiatr Res. 2015;70:50-57. https://doi:10.1016/j.jpsychires.2015.08.014 
  24. Friedli MJ, Inestrosa NC. Huperzine A and Its Neuroprotective Molecular Signaling in Alzheimer’s Disease. Molecules. 2021;26(21):6531. Published 2021 Oct 29. https://doi:10.3390/molecules26216531 
  25. Kennedy DO. B Vitamins and the Brain: Mechanisms, Dose and Efficacy–A Review. Nutrients. 2016;8(2):68. Published 2016 Jan 27. https://doi:10.3390/nu8020068 
  26. Cristina-Souza G, Santos-Mariano AC, Lima-Silva AE, et al. Panax ginseng Supplementation Increases Muscle Recruitment, Attenuates Perceived Effort, and Accelerates Muscle Force Recovery After an Eccentric-Based Exercise in Athletes. J Strength Cond Res. 2022;36(4):991-997. https://doi:10.1519/JSC.0000000000003555

About Amanda Capritto, CPT, CSNC, CPS

Amanda is a content writer and journalist in the outdoors, fitness, and wellness niches. She is a certified personal trainer and sports nutrition coach who helps people reach their most exciting outdoor adventure goals. She is the coach who can help you prepare to climb Half Dome or kayak the Wilderness Waterway in the Florida Everglades.

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