Our "No Return Necessary"
Money-Back Guarantee
If you don’t like something of ours, guess what happens next?
No, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon. Nor do we ask you to fill a cursed inkwell with orc’s blood and demon saliva and then use it to complete reams of return forms written in ancient Cyrillic script.
We just . . . wait for it . . . give you your money back. Holy moo cows. And that means you can say "yes" now and decide later.
Is Pulse “PRs in a bottle?”
No.
Will it add another plate or two to the bar?
Absolutely not.
But will Pulse help you train harder, go longer, and finish stronger?
Yes. Or your money back.
- Total formulation transparency (no proprietary blends)[9]
- Certified to contain no banned substances by Labdoor™, the gold standard of third-party lab testing[10]
- Made in the USA with globally sourced ingredients in NSF-certified and FDA-inspected and cGMP-compliant facilities
Pulse is also backed by our “No Return Necessary” money-back guarantee that works like this:
If you don’t absolutely love Pulse, just let us know, and we’ll give you a full refund on the spot. No forms or return necessary.
So order now, try Pulse risk free, and see for yourself why it’s one of the most popular naturally sweetened and flavored pre-workout supplements in the world (over 2 million bottles sold and counting!).
Is Pulse “PRs in a bottle?”
No.
Will it add another plate or two to the bar?
Absolutely not.
But is Pulse the only[1] naturally sweetened and flavored[2] stimulant-free pre-workout supplement with clinically effective doses[3] of 4 ingredients scientifically shown[4] to increase strength and stamina and reduce fatigue and without the jitters, upset stomach, or post-workout crash?[5]
And will it help you train harder, go longer, and finish stronger?
Yes. Or your money back.
- 45 peer-reviewed scientific studies support Pulse’s ingredients and doses[6]
- Contains no caffeine, artificial sweeteners, flavors, food dyes, or other unnecessary junk[7]
- Analyzed for purity and potency in a state-of-the-art ISO 17025 accredited lab[8]
- Total formulation transparency (no proprietary blends)[9]
- Certified to contain no banned substances by Labdoor™, the gold standard of third-party lab testing[10]
- Made in the USA with globally sourced ingredients in NSF-certified and FDA-inspected and cGMP-compliant facilities
Pulse is also backed by our “No Return Necessary” money-back guarantee that works like this:
If you don’t absolutely love Pulse, just let us know, and we’ll give you a full refund on the spot. No forms or return necessary.
So order now, try Pulse risk free, and see for yourself why it’s one of the most popular naturally sweetened and flavored pre-workout supplements in the world (over 2 million bottles sold and counting!).
Notice to California Consumers
WARNING: Consuming this product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food.
Legion Stim-Free Pulse Ingredients (14.4 grams per serving)
Citrulline Malate (8 grams per serving)
Citrulline malate is the amino acid L-citrulline bound with malic acid, a substance found in many fruits that is involved in the creation of cellular energy.
L-citrulline turns into another amino acid in the body known as L-arginine, which increases the production of a gas known as nitric oxide that widens blood vessels and improves blood flow.[11][12]
This is why research shows that supplementation with citrulline malate . . .
- Improves muscle endurance[13][14][15]
- Relieves muscle soreness[16]
- Improves aerobic performance[17][18]
The clinically effective dose of citrulline malate is between 4 and 10 grams.
Beta-Alanine (3.6 grams per serving)
Beta-alanine is a naturally occurring amino acid that regulates the amount of the molecule carnosine that can be stored in the muscles.[19]
Carnosine reduces muscle acidity, which increases the amount of work that muscles can do before they become fatigued.[20]
This is why research shows that supplementation with beta-alanine . . .
- Reduces exercise-induced fatigue[21][22][23][24]
- Improves anaerobic exercise capacity[25][26][27][28][29]
- Increases potential workload, which can lead to an increase in lean mass[30][31]
- Reduces feelings of fatigue during exercise[32][33][34]
The clinically effective dose of beta-alanine is between 2.6 and 6.4 grams.
We chose to include 3.6 grams of beta-alanine per serving because it provides significant performance benefits while also minimizing the common and harmless side effect of a mild prickling, itching, or tingling of the skin.[35]
Alpha-GPC (300 milligrams per serving)
Alpha-glycerophosphocholine (also known as alpha-GPC and glycerophosphocholine) is a compound that contains two molecules known as choline and glycerophosphate.
Choline is a nutrient that’s vital for brain health and function, and glycerophosphate is a substance that helps transport choline to the brain.
When ingested, alpha-GPC increases the activity of a chemical in the brain known as acetylcholine, which is used by nerves to communicate with each other, and provides the brain with glycerophosphate, which can improve its health and function.
This is why research shows that supplementation with alpha-GPC . . .
- Increases power output[36]
- Mitigates cognitive decline as we age[37]
- Increases growth hormone levels[38]
The clinically effective dose of alpha-GPC is between 150 and 1,200 milligrams, with 250 to 500 milligrams sufficient for cognitive benefits.[39]
We chose to include 300 milligrams of alpha-GPC (50%) per serving because it’s enough to provide some benefit without eating up too much budget that we’d rather spend on other ingredients.
Furthermore, this dose reduces the likelihood of headaches in people who are using stim-free Pulse and Forge together, and especially in people who are using stim-free Pulse, Forge, and Ascend together.
Betaine (2.5 grams per serving)
Betaine (also known as trimethylglycine) is an amino acid found in various foods like beets (hence the name), spinach, and quinoa.
Betaine’s rich in a special molecule known as a methyl group, which is a vital component of many physiological functions, including DNA production, fat metabolism, cellular energy production, and more.
Betaine’s also an osmolyte, which is a substance that helps balance fluid levels inside and outside cells.
These two properties are beneficial during times of physical stress, and this is why studies show that betaine boosts muscle endurance and increases strength.[40][41]
The clinically effective dose of betaine is between 1.25 and 2.5 grams.
Naturally Sweetened & Flavored
While artificial sweeteners may not be as dangerous as some people claim, studies suggest that regular consumption of these chemicals may indeed be harmful to our health.[42][43][44][45][46][47]
That’s why we use the natural sweeteners stevia and erythritol instead. Studies show that these ingredients are not only safe but can also confer several health benefits, including better nutrient absorption, healthy cholesterol and inflammation levels, and more.[48][49][50][51]
No Artificial Food Dyes, Fillers, or Other Unnecessary Junk
As with artificial sweeteners, artificial food dyes aren’t a hazard per se, but studies show they can cause negative effects in some people, including gastrointestinal toxicity and behavioral disorders.[52][53][54][55][56]
That’s why we use natural flavoring and coloring derived from fruits, plants and other foods.
Third-Party Lab Tested for Potency & Purity
Every bottle of Pulse is analyzed in a state-of-the-art ISO 17025 accredited lab to verify what is and isn’t in it. That way, you know exactly what you’re getting and putting into your body.
See how Legion stim-free Pulse compares to the rest.
- Active Ingredients
- Clinically Effective Ingredients & Doses
- Citrulline Malate
- Beta-Alanine
- Betaine
- Alpha-GPC
- Naturally Sweetened
& Flavored - Third-Party Lab Tested
- Labdoor Ranking
- Price Per Serving
-
Legion Stim-Free
Pulse Pre-Workout
- 14,400 mg
per serving 
- 8,000 mg
per serving - 3,600 mg
per serving - 2,500 mg
per serving - 300 mg
per serving - A-
- $
-
Pre-Kaged
Stimulant Free
- 23,050 mg
per serving 
- 6,500 mg
per serving - 1,600 mg
per serving - 2,500 mg
per serving 
- $1.99
-
PEScience
High Volume
- 10,750 mg
per serving - 4,000 mg
per serving - $1.94
-
C4
NO3 Ultimate
- 7,180 mg
per serving - 4,000 mg
per serving - $1.99
The #1 brand of all-natural sports supplements.
Over 5+ million bottles sold to over 1+ million customers who have left us over 45,000 5-star reviews.
Clinically Effective Ingredients & Doses
Every ingredient and dose (important!) in stim-free Pulse is backed by peer-reviewed scientific research demonstrating clear benefits.
Naturally Sweetened & Flavored
Stim-free Pulse uses natural flavoring and coloring derived from fruits, plants and other foods.
Total Label Transparency
This means you know exactly what’s in every serving of stim-free Pulse—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.
Third-Party Lab Tested
Stim-free Pulse is tested by third-party labs for heavy metals, microbes, allergens, and other contaminants to ensure it meets FDA purity standards.
Made in the USA
Stim-free Pulse is made in America with globally sourced ingredients in NSF-certified, FDA-inspected facilities that adhere to Current Good Manufacturing Practice (cGMP) standards.
"No Return Necessary"
100% Money-Back-Guarantee
If you don't absolutely love stim-free Pulse, you get a prompt and courteous refund. No forms or returns necessary.
Trusted by scientists, doctors, and everyday fitness folk alike.
Frequently Asked Questions
+References
Some popular stim-free pre-workouts are naturally sweetened and flavored. Some contain the right mix of high-quality ingredients. Some provide clinically effective doses. But only Pulse checks each of these boxes. ↑
While artificial sweeteners may not be as dangerous as some people claim, studies suggest that regular consumption of these chemicals may indeed be harmful to our health. That’s why we use the natural sweeteners stevia and erythritol instead.↑
Every serving of Pulse contains 14.4 grams of active ingredients that have been shown to be safe and effective in peer-reviewed scientific research.↑
Every active ingredient in Pulse is backed by published scientific studies that show benefits in healthy humans.↑
Stim-free Pulse contains no stimulants of any kind, so it won't wind you up and burn you out.↑
That’s 436 pages of scientific research that shows Pulse works the way we say it does.↑
While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health. And that’s why we don’t put any of them into our products.↑
Every bottle of Pulse is guaranteed to provide exactly what the label claims and nothing else—no heavy metals, microbes, allergens, or other contaminants.↑
This means you know exactly what’s in every serving of Pulse—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.↑
Before you buy a sports supplement, you should know that it's clean, safe, and transparent. And that's exactly what Labdoor's third-party testing and certification means.↑
Förstermann U, Sessa WC. Eur Heart J. 2012;33(7):829-837, 837a-837d. doi:10.1093/eurheartj/ehr304.↑
Zhao Y, Vanhoutte PM, Leung SWS. J Pharmacol Sci. 2015;129(2):83-94. doi:10.1016/j.jphs.2015.09.002.↑
Pérez-Guisado J, Jakeman PM. Department of Medicine, University of Córdoba, Córdoba, Spain. J Strength Cond Res. 2010 May;24(5):1215-22. ↑
Glenn JM, Gray M, Wethington LN, Stone MS, Stewart RW, Moyen NE. Eur J Nutr. 2017;56(2):775-784. doi:10.1007/s00394-015-1124-6.↑
Glenn JM, Gray M, Jensen A, Stone MS, Vincenzo JL. Eur J Sport Sci. 2016;16(8):1095-1103. doi:10.1080/17461391.2016.1158321.↑
Pérez-Guisado J, Jakeman PM. Department of Medicine, University of Córdoba, Córdoba, Spain. J Strength Cond Res. 2010 May;24(5):1215-22. ↑
Bendahan D, Mattei JP, Ghattas B, Confort-Gouny S, Le Guern ME, Cozzone PJ. Centre de Résonance Magnétique Biologique et Médicale, Faculté de Médecine de la Timone, France. Br J Sports Med. 2002 Aug;36(4):282-9. ↑
Suzuki T, Morita M, Kobayashi Y, Kamimura A. J Int Soc Sports Nutr. 2016;13:6. doi:10.1186/s12970-016-0117-z.↑
Dunnett M, Harris RC. Department of Veterinary Basic Sciences, Royal Veterinary College, Hatfield, Hertfordshire, UK. Equine Vet J Suppl. 1999 Jul;(30):499-504. ↑
Budzeń S, Rymaszewska J. Adv Clin Exp Med. 22(5):739-744.↑
Derave W, Ozdemir MS, Harris RC, Pottier A, Reyngoudt H, Koppo K, Wise JA, Achten E. Dept. of Movement and Sport Sciences, Ghent Univ, Belgium. J Appl Physiol. 2007 Nov;103(5):1736-43. ↑
Stout JR, Cramer JT, Zoeller RF, Torok D, Costa P, Hoffman JR, Harris RC, O'Kroy J. Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA. Amino Acids. 2007;32(3):381-6. ↑
Stout JR, Graves BS, Smith AE, Hartman MJ, Cramer JT, Beck TW, Harris RC. Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA. J Int Soc Sports Nutr. 2008 Nov 7;5:21. ↑
Hoffman JR, Ratamess NA, Faigenbaum AD, Ross R, Kang J, Stout JR, Wise JA. Department of Health and Exercise Science, The College of New Jersey, Ewing, NJ, USA. Nutr Res. 2008 Jan;28(1):31-5. ↑
Hill CA, Harris RC, Kim HJ, Harris BD, Sale C, Boobis LH, Kim CK, Wise JA. School of Sports, Exercise & Health Sciences, University of Chichester, Chichester, UK. Amino Acids. 2007 Feb;32(2):225-33. ↑
Sale C, Saunders B, Hudson S, Wise JA, Harris RC, Sunderland CD. Biomedical, Life and Health Sciences Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, UK. Med Sci Sports Exerc. 2011 Oct;43(10):1972-8. ↑
Walter AA, Smith AE, Kendall KL, Stout JR, Cramer JT. Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA. J Strength Cond Res. 2010 May;24(5):1199-207. ↑
Smith AE, Walter AA, Graef JL, Kendall KL, Moon JR, Lockwood CM, Fukuda DH, Beck TW, Cramer JT, Stout JR. Metabolic and Body Composition Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA. J Int Soc Sports Nutr. 2009 Feb 11;6:5. ↑
Hobson RM, Saunders B, Ball G, Harris RC, Sale C. Biomedical, Life and Health Sciences Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, UK. Amino Acids. 2012 Jul;43(1):25-37. ↑
Kern BD, Robinson TL. Human Performance and Physical Education Department, Adams State College, Alamosa, Colorado, USA. J Strength Cond Res. 2011 Jul;25(7):1804-15. ↑
Smith AE, Walter AA, Graef JL, Kendall KL, Moon JR, Lockwood CM, Fukuda DH, Beck TW, Cramer JT, Stout JR. Metabolic and Body Composition Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA. J Int Soc Sports Nutr. 2009 Feb 11;6:5. ↑
Stout JR, Cramer JT, Zoeller RF, Torok D, Costa P, Hoffman JR, Harris RC, O'Kroy J. Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA. Amino Acids. 2007;32(3):381-6. ↑
Stout JR, Graves BS, Smith AE, Hartman MJ, Cramer JT, Beck TW, Harris RC. Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA. J Int Soc Sports Nutr. 2008 Nov 7;5:21. ↑
Hoffman JR, Ratamess NA, Faigenbaum AD, Ross R, Kang J, Stout JR, Wise JA. Department of Health and Exercise Science, The College of New Jersey, Ewing, NJ, USA. Nutr Res. 2008 Jan;28(1):31-5. ↑
Beasley L, Smith L, Antonio J, Gordon D, Johnstone J, Roberts J. J Int Soc Sports Nutr. 2018 Dec 18;15(1):59. doi: 10.1186/s12970-018-0266-3. ↑
Ziegenfuss T, Landis J, Hofheins J. J Int Soc Sports Nutr. 2008;5(Suppl 1):P15. doi:10.1186/1550-2783-5-S1-P15. ↑
De Jesus Moreno Moreno M. Clin Ther. 2003;25(1):178-193. ↑
Kawamura T, Okubo T, Sato K, et al. Nutrition. 2012;28(11-12):1122-1126. doi:10.1016/j.nut.2012.02.011 ↑
Marcus L, Soileau J, Judge LW, Bellar D. Journal of the International Society of Sports Nutrition. 2017;14:39. doi:10.1186/s12970-017-0196-5. ↑
Trepanowski JF, Farney TM, McCarthy CG, Schilling BK, Craig SA, Bloomer RJ. Cardiorespiratory/Metabolic Laboratory, The University of Memphis, Memphis, Tennessee, USA. J Strength Cond Res. 2011 Dec;25(12):3461-71. ↑
Lee EC, Maresh CM, Kraemer WJ, Yamamoto LM, Hatfield DL, Bailey BL, Armstrong LE, Volek JS, McDermott BP, Craig SA. Department of Kinesiology, University of Connecticut, Storrs, CT, USA. J Int Soc Sports Nutr. 2010 Jul 19;7:27. ↑
Basson AR, Rodriguez-Palacios A, Cominelli F. Front Nutr. 2021;8:746247. Published 2021 Sep 24. doi:10.3389/fnut.2021.746247.↑
Suez J, Korem T, Zilberman-Schapira G, Segal E, Elinav E. Gut Microbes. 2015;6(2):149-155. doi:10.1080/19490976.2015.1017700.↑
Qin X. Department of Surgery, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark, New Jersey, USA. Can J Gastroenterol. 2011 Sep;25(9):511. ↑
Shil A, Chichger H. Int J Mol Sci. 2021;22(10):5228. Published 2021 May 15. doi:10.3390/ijms22105228.↑
Suez J, Korem T, Zeevi D, et al. Nature. 2014;514(7521):181-186. doi:10.1038/nature13793.↑
Frankenfeld CL, Sikaroodi M, Lamb E, Shoemaker S, Gillevet PM. Ann Epidemiol. 2015;25(10):736-42.e4. doi:10.1016/j.annepidem.2015.06.083.↑
Yadav SK, Guleria P. CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061, HP, India. Crit Rev Food Sci Nutr. 2012;52(11):988-98. ↑
Shivanna N, Naika M, Khanum F, Kaul VK. Department of Applied Nutrition, Defence Food Research Laboratory, Mysore, India. J Diabetes Complications. 2013 Mar-Apr;27(2):103-13. ↑
World Health Organization. WHO Press; 2006. Available at: http://whqlibdoc.who.int/publications/2006/9241660546_eng.pdf. Accessed January 24, 2019. ↑
Ozbayer C, Kurt H, Kalender S, Ozden H, Gunes HV, Basaran A, Cakmak EA, Civi K, Kalender Y, Degirmenci I. Department of Medical Biology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey. J Med Food. 2011 Oct;14(10):1215-22. ↑
Feng J, Cerniglia CE, Chen H. Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, AR , USA. Front Biosci (Elite Ed). 2012 Jan 1;4:568-86. ↑
Kanarek RB. Department of Psychology, Tufts University, Medford, Massachusetts, USA. Nutr Rev. 2011 Jul;69(7):385-91. ↑
Nigg JT, Lewis K, Edinger T, Falk M. Oregon Health and Science University, Portland, OR, USA. J Am Acad Child Adolesc Psychiatry. 2012 Jan;51(1):86-97.e8. ↑
McCann D, Barrett A, Cooper A, Crumpler D, Dalen L, Grimshaw K, Kitchin E, Lok K, Porteous L, Prince E, Sonuga-Barke E, Warner JO, Stevenson J. School of Psychology, Department of Child Health, University of Southampton, Southampton, UK. Lancet. 2007 Nov 3;370(9598):1560-7. ↑
Gao Y, Li C, Shen J, Yin H, An X, Jin H. Scientific and Technological College of Chemistry and Biology, Yantai Univ., Yantai, PR China. J Food Sci. 2011 Aug;76(6):T125-9. ↑
