Best Stim-Free Pre-Workout Supplements of 2024, Experts Tested & Reviewed

An accredited sports nutrition coach assesses top non-stimulant pre-workout supplements capable of elevating your exercise performance to new heights.

Our editors independently research, test, and recommend the best products; we may receive commissions on purchases made from our chosen links. You can learn more about our review process here.


Pre-workout supplements ensure your body keeps up with the energy needed to complete your workout. These supplements boost energy, help you maximize performance, and improve focus, among many other fitness and health benefits.

Registered dietitian Kate Patton, MEd, RD, CCSD, LD, says, “Pre-workout supplements are pills or powders that are meant to be consumed about half an hour before exercising,”

They are also suitable for preventing you from experiencing a workout slump during your workout sessions. Sadly, most pre-workout supplements are full of stimulants that are not good for your body and your brain.

These stimulants are used in pre-workout supplements to increase energy levels and exercise performance by combating fatigue. These stimulant pre-workouts aren’t ideal because your body tends to experience an energy slump, jitters, anxiety and even dependence.

Therefore, more individuals are opting for stim-free pre-workout supplements because they are more sustainable in the long run. They also don’t give you jitters or energy dips.

Stimulant-free pre-workout supplements are ideal for individuals who also like training at night and want to break free from stimulants. They also offer a range of health and fitness benefits and are a more natural way to enhance performance, focus, and endurance.

However, finding a suitable stim-free pre-workout supplement might be challenging because many brands claim to have stim-free pre-workout supplements but have hidden stimulant ingredients that consumers know nothing about. So, how do you find the right stim-free pre-workout supplement for you?

Our article will help you figure that out as we dive into everything you need to know about stim-free pre-workout supplements. This article will share factors to consider when picking your non-stimulant pre-workout supplement.

Best Stim-Free Pre-Workout

Best Stim-Free Pre-Workout Overall:
Crazy Nutrition Intensive Pre-Train

Best Stim-Free Pre-Workout With Creatine:
Crazy Nutrition’s CRN-5 creatine

Best Stim-Free Pre-Workout for Weight loss:
PrimeGenix CalmLean

Best Non-Stim Pre-Workout for Performance & Recovery:
Onnit Total Strength and Performance

Best Non-Stim Pre-Workout for Muscle Gain:
Transparent Labs Stim-Free

Our Top Picks

#1 Crazy Nutrition Intensive Pre-Train

Key features

  • Flavors: Blue Raspberry, Fruit Punch, Green Apple
  • Serving Size: 1 Scoop (varies by flavor)
  • Servings Per Pouch: 20-30
  • Key Ingredients: Citrulline Malate 2:1, Beta-Alanine, Taurine, KSM-66® Ashwagandha
  • Price: $59.99 with free shipping options
  • Vegan & Vegetarian-friendly

What we love:

  • Composed of 13 high-impact ingredients
  • Energy boost without caffeine jitters or crashes
  • Supports mental clarity and focus
  • Muscle power surge for optimal performance
  • Vegan-friendly and free from filler ingredients

What to consider:

  • Premium pricing reflects high-quality formulation
  • Not suitable for caffeine-sensitive individuals

Why we choose Crazy Nutrition Intensive Pre-Train:

It stands out in a saturated market with its stimulant-free approach, providing a safe yet potent alternative for pre-workout supplementation.


In a realm where the efficacy of pre-workout supplements is often clouded by stimulant overuse, INTENSIVE PRE-TRAIN by Crazy Nutrition redefines performance enhancement. This scientifically calibrated formula fuels athletes. It contains a potent blend of natural ingredients designed to elevate energy levels, sharpen focus, and maximize workout capacity—all without relying on excessive caffeine.

Its meticulous formulation ensures that you’re propelled through your workout by the sheer force of clinically dosed elements, celebrated for their synergistic effects on both mind and muscle. If you’re looking for a pre-workout that delivers without the jitters and crashes, INTENSIVE PRE-TRAIN is your go-to choice.

#2 Crazy Nutrition’s CRN-5 creatine

Key features

  • Flavors: Various gourmet options
  • Servings Per Tub: 30
  • Key Ingredients: Creatine Monohydrate, Ethyl Ester, HCl, Tri-Creatine Malate, Citrate Pyruvate
  • Electrolytes: Aquamin® Mg and Ag, Sodium, Potassium
  • Price: Competitive for market-leading quality
  • Suitability: Vegan, Non-GMO, Soy-free, Grain-free

What we love:

    • Unleashes 5X the creatine strength for explosive workouts
    • Optimizes hydration with premium electrolytes
    • Augments endurance and mental focus for peak performance
    • Vegan-friendly formula with natural, non-GMO ingredients
    • Endorsed by top fitness professionals for reliable gains
    • Tested and verified for safety and effectiveness
    • Comes in multiple delicious flavors for enjoyable consumption

What to consider:

  • Premium pricing for a premium blend
  • Due to potency, may not be suitable for creatine beginners

Why we choose Crazy Nutrition’s CRN-5 creatine:

In the competitive world of strength and muscle gains, Ultimate CRN-5 shines with its diverse quintet of creatines, maximizing muscle fuel and recovery with a no-bloat promise. This formula is crafted meticulously for those who demand the best from their supplements without compromise.


Crazy Nutrition’s Ultimate CRN-5 disrupts the creatine market with an advanced formula that goes beyond the monohydrate norm. It’s an all-in-one powerhouse supporting muscle strength, recovery, and hydration thanks to a synergistic blend of five creatines and premium electrolytes, leading to 5X more fuel for your muscle fibers.

By enhancing ATP production, your muscles access peak power output, enabling you to shatter workout plateaus. Backed by expert testimonials and scientific research, the Ultimate CRN-5 is the unparalleled choice for athletes aiming for rapid progress without the risk of cramps, gas, or bloating.

#3 PrimeGenix CalmLean

Key features

  • Formulation: Stimulant-free capsules
  • Quantity: Available in 1, 3, and 6 bottle packages
  • Ingredients: ForsLean®, Capsicum Annuum, Chromium Polynicotinate, BioPerine®
  • Servings: 60 capsules per bottle (30-day supply)
  • Assurance: 67-day money-back guarantee
  • Unique Offering: Patented ingredients and multi-bottle savings

What we love:

  • Metabolism boost within minutes
  • Converts fat into energy efficiently
  • Hunger reduction
  • Fat formation blockage
  • 100% stimulant-free and natural ingredients
  • Backed by clinical studies
  • Easy, interest-free payment plans with Sezzle

What to consider:

  • Premium-priced product
  • Individual results may vary

Why we choose PrimeGenix CalmLean:

CalmLean® distinguishes itself as a stimulant-free weight loss aid that’s both safe and efficacious. Its blend of thermogenic nutrients and a patented U.S. compound are clinically proven to help users shed pounds without altering their lifestyle or risking their health.


CalmLean® is revolutionizing weight management with its advanced, stimulant-free formula designed for those seeking a safe and reliable path to weight loss. Its scientifically-backed ingredients, such as the patented ForsLean®, elevate the body’s natural fat-burning processes.

With its commitment to enhancing thermogenesis and optimizing metabolism, CalmLean® stands out as a holistic solution. It has the potential to facilitate significant body composition improvements while avoiding common stimulant-associated side effects.

In the realm of weight loss, Calmlean stands out as the optimal choice, not only for its versatile formula catering to diverse lifestyles and dietary preferences but also for its stimulant-free properties. This effective best fat-burner addresses multiple facets of weight loss, encompassing appetite control and fat oxidation, making it an ideal supplement

#4 Onnit Total Strength and Performance

Key features:

  • Formulation: Adaptogen-rich supplement blend
  • Quantity: 30 servings per container
  • Ingredients: ONNIT Power Blend™, Performance Blend™, Support Blend™
  • Certified: Informed-Sport
  • Special: Gluten-free, caffeine-free
  • Offers: Subscribe & Save discounts

What we love:

  • Clinically validated to enhance strength and performance.
  • Features an ONNIT Power Blend™ with a long jack to support muscle contractions.
  • Includes a Performance Blend with BCAAs to aid during exercise.
  • Support Blend with nutrients like resveratrol for cellular integrity.
  • Certified by Informed Sport, ensuring freedom from banned substances.
  • Continuously vetted for quality and competition safety.
  • Free from gluten and caffeine, for stimulant-sensitive individuals.

What to consider:

  • Premium price point.
  • Effectiveness may vary between individuals.

Why we choose Onnit Total Strength and Performance:

This innovative supplement stands apart for supporting athletes looking for a natural and comprehensive approach to strength and performance. It is tailored to enhance physical capabilities without the reliance on synthetic stimulants.


Total Strength + Performance redefines the pre-workout supplement landscape by delivering a scientifically crafted blend of adaptogens and nutrients that promote hormonal balance and improve strength gains. Its effectiveness is backed by a study from Florida State University, showing remarkable improvements in key lifts for athletes.

The absence of gluten and caffeine makes it an inclusive option for almost any athlete, ensuring peak performance that aligns with both wellness and competitive standards. With continuous quality checks and certifications from Informed Sport, this supplement is a safe and trusted choice for those looking to enhance their athletic performance.

#5 Transparent Labs Stim-Free

Key features:

  • Serving Size: 23 grams per scoop
  • Key Ingredients: Citrulline Malate, Beta-Alanine, Betaine, Taurine
  • Container: Jumbo-sized for extended use
  • Certifications: Gluten-free, non-GMO
  • Unique: No artificial sweeteners or coloring

What we love:

  • Clinically effective dosages of key ingredients.
  • Fully transparent formula with no artificial sweeteners or colors.
  • Created for high-intensity workouts without stimulants.
  • Supports muscle gain and endurance enhancement.
  • Gluten-free and non-GMO.

What to consider:

  • Premium investment in health.
  • May need to adjust the serving size for tolerance.

Why we choose Transparent Labs Stim-Free:

Transparent Labs STIM-FREE is the paradigm of stimulant-free pre-workout formulations, boasting a potent blend that caters to serious athletes and bodybuilders. It provides all the benefits of a high-intensity supplement while respecting the body’s natural rhythms.


Transparent Labs STIM-FREE cuts through the market clutter with its unrivaled formula, designed to elevate nitric oxide levels and sharpen focus. It aims to set new benchmarks for those seeking peak performance without caffeine.

This result-driven product affirms its elite status with a robust blend of citrulline malate, beta-alanine, and other pivotal nutrients, ensuring your workout is powered by quality and efficacy. With Transparent Labs STIM-FREE, athletes can embrace endurance and power, sculpting their physique safely and sustainably.

Benefits Of Stim-Free Pre-Workout Supplements

Stim-free pre-workout supplements have benefits similar to regular pre-workout supplements. They also have several advantages to improve and optimize your fitness routine. Let’s have a look at some of them below:

Enhances Blood Flow

Taking stim-free pre-workout supplements helps increase blood flow and circulation during training due to the presence of nitric oxide-boosting ingredients.

Nitric oxide acts as a vasodilator that enhances blood flow during workouts. Registered dietitian Kate Patton, MEd, RD, CCSD, LD, highlights the positive impact of increased blood flow during workouts, saying,

This may improve intense bursts of exercise, like when you’re doing sprints or weight-lifting,

According to a study by NCBI, it also helps reduce fatigue and enhances aerobic and anaerobic performance.

Workout Endurance

As much as the best non-stim pre-workout supplements don’t give you a surge of energy burst like other stimulant pre-workout, they help you be more steady and enhance your endurance.

The presence of ingredients such as Beta-alanine, creatine, and betaine are ideal for increasing workout effectiveness, capacity and performance because the body can endure throughout the workout session without experiencing a pre workout dip in energy levels and muscle fatigue.

Improves Focus

Non-stimulant pre-workouts don’t have caffeine content but are equally effective in enhancing the focus, alertness and mental clarity needed to complete your workouts.

The ingredients present in the best stim-free pre-workout can give you that mental power and focus without heightening levels of anxiety, jitters and irritability like their counterparts with caffeine and other stimulants.

Supports Repair And Recovery

Stim-free pre-workout supplements also promote joint and muscle recovery and repair after workouts due to the presence of ingredients such as amino acids and nitric oxide.

Amino acids grow and repair muscles, decrease muscle soreness and aid in energy production, Registered dietitian Kate Patton, MEd, RD, CCSD, LD, explains. Patton also comments about the healing benefits of nitric oxide, saying. “It can also help reduce inflammation and enhance recovery.

What To Consider When Picking The Best Stim-Free Pre-Workout Supplements

There are several factors you need to consider when picking your stim-free pre-workout supplements if you want to get effective ones that give you value for your money. Here is a list of what you need to consider:


Price is one of the first vital factors you must consider because your budget heavily influences it. Therefore, you must know what you’re willing to spend before you source your supplement.

Luckily, non-stim pre-workout doesn’t need to cost you an arm and a leg. Many brands have incredible, effective supplements at affordable prices. All you have to do is take your time comparing prices and quality before you decide to settle on one.


It is essential to check out the ingredient list before buying the best stim-free pre-workout supplement to ensure that it doesn’t contain any trace of stimulants or ingredients that don’t match your diet preferences.

Other than caffeine, ingredients like theobromine, yohimbine, and synephrine are also known to be stimulants. Therefore, you need to avoid them if you want a stim-free drink experience.

Your fitness goals will also influence your preferred ingredients in your stim-free supplement. For example, if you want to increase muscle mass, you’d instead consider one with abundant creatine or other ingredients rich in muscle-building properties.

Third-Party Testing

Look for pre workout no caffeine supplements tested by third-party organizations that give honest and unbiased opinions concerning the supplement. Third-party certifications are simply a vote of confidence in the product and show that it meets various quality standards.

According to Alex Larson, a Minnesota-based registered dietitian, pre-workouts are generally safe, “But as with any nutrition supplement, I recommend opting for one that is third-party tested, such as NSF-certified or Informed-Choice for Sport,” she says. “Many nutrition supplements that are not third-party tested have been shown to have heavy metals and contaminants.”

Form Of Supplement

Last, you’d want to consider which form you prefer when taking your supplements. Are you a tablet, gel, liquid or powder form person? Once you know what you want, you can pick one that suits you.

You should remember that the form you pick will also affect whether or not you’ll have to set aside some prep time for your supplement. For example, a powder-form supplement may need some time to prepare, depending on whether it’s mixed with your favorite drink or meal. Meanwhile, a capsule will only require you to grab water with zero prep time.

Customer Reviews

Customer feedback is crucial when it comes to gauging the effectiveness of a product. Checking out a supplement’s ratings and what customers say about it is ideal for knowing if it is worth your coins. If a supplement has more negative than positive reviews, it’s not worth the risk.


Stim-free pre-workout supplements are becoming increasingly popular because they help boost energy levels, enhance physical performance, and improve focus without negative aftereffects. They also have a variety of health benefits and are a healthier, more natural alternative.

They are ideal for individuals who want to cut down on stimulants or those who prefer evening workouts. Identifying the best stim-free pre-workout stimulant supplements is one of the critical steps to experiencing wholesome workout sessions.

Our article helps you quickly identify these supplements because we’ve captured all you need to know about them.

Frequently Asked Questions (FAQs)

Q. What’s The Difference Between Regular Pre-Workouts And Stunt-Free Pre-Workout Supplements?
A. The main difference between them is that stim-free pre-workout supplements are mainly non caffeine pre workout. Thus don’t contain stimulants like caffeine. Another difference is that stim-free pre-workouts don’t have adverse side effects such as irritability, jitters, and experiencing energy crush once they wear out. They also don’t affect your sleep

Q. Who Should Take The Best Non-Stim Pre-Workout Supplements?
A. Anyone who wants to eliminate stimulants like caffeine from their workout supplements can take non-stim pre-workout supplements. They are also ideal for individuals who work out in the evenings and don’t need stimulants before returning to bed.

Q. Where Can I Buy The Best Stim Free Pre-Workout Supplements?
A. You can get them from official online stores or nearby stores.

Q. Are Non-Stimulant Pre Workouts Worth It?
A. Pure, non-stimulant pre-workout supplements are worth it because they supply you with energy and enhance endurance and focus without you having to experience the negative after-effects such as irritation and energy deeps that other regular pre-workouts have.

Q. How Much Do The Best Caffeine Free Pre Workouts Cost?
A. The best non-caffeine pre workout costs vary depending on what you want and your brand. Therefore, it’s crucial to window-shop your supplements before deciding what to get. Compare prices, quality and ingredients as you window-shop. Then, pick the one that ticks all your preferred boxes and is perfect for your budget.

Q. When Can I Take The Non-Stim Preworkout?
A. You can take pre-workout supplements before your workouts. However, read the manufacturer’s instructions for more information concerning the time you need to take it.

Q. How Do You Use The Best Stim-Free Pre-Workout Supplements?
A. Different non-stim pre-workout supplements have different instructions for use and consumption. We’d recommend you read what the manufacturer suggests before consuming your supplement.

Q. What Are The Common Ingredients In Non-Stimulant Pre-workout Supplements?
A. Many non-stim pre-workouts have a mix of putative ergogenic ingredients and nonstimulant nootropics such as alpha-GPC and CDP-choline, L-theanine, huperzine-A, and acetyl-L-carnitine (ALCAR). The putative ergogenic ingredients include amino acids (BCAAs), beta-alanine, citrulline, and arginine. These non caffeine pre workout also contain creatine, taurine, vitamins, and electrolyte minerals, which help reduce muscle fatigue and enhance hydration.

Q. Do Non Caffeine Pre Workout Supplements Work?
A. Yes, they work fine supplying your body with energy without the negative effects of consuming caffeine.

5 Sources

BodybuildingReviews avoids using tertiary references. We have strict sourcing guidelines and rely on peer-reviewed studies, academic researches from medical associations and institutions. To ensure the accuracy of articles in BodybuildingReviews, you can read more about the editorial process here.

  1. Clinic, C. (2022, September 1). Is pre-workout powder safe? Does it work? Cleveland Clinic.
  2. International Society of Sports Nutrition position stand: Safety and efficacy of creatine supplementation in exercise, sport, and medicine. (n.d.). PubMed Central (PMC).
  3. Nitrate supplementation's improvement of 10-km time-trial performance in trained cyclists. (n.d.). PubMed.
  4. Performance enhancement with supplements: Incongruence between rationale and practice. (n.d.). PubMed Central (PMC).
  5. Tyrosine promotes cognitive flexibility: Evidence from proactive vs. reactive control during task switching performance. (n.d.). PubMed.

Ayana Habtemariam, MSW, RDN, LDN

Ayana Habtemariam MSW, RD, LDN, is a nutrition therapist, certified intuitive eating counselor, and macro social worker based in Arlington, Virginia.

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