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.
Will Pre-Workout Pump give you skin-tearing pumps, vein-bursting vascularity, and superhuman strength?
No.
Will it “hyper hydrate” your muscles and maximize your “mind-muscle connection”?
Absolutely not.
But is Pre-Workout Pump the only[1] natural[2] pump supplement with clinically effective doses[3] of four ingredients scientifically shown[4] to increase blood flow, power, strength, and stamina?
And will it help you train harder and longer, and feel fitter and stronger, without a crash or other unwanted side effects?
Yes. Or your money back.
- 27 peer-reviewed scientific studies support Pre-Workout Pump's combination of ingredients and doses[5]
- Contains no artificial sweeteners, flavors, food dyes, or other chemical junk[6]
- Analyzed for purity and potency in a state-of-the-art ISO 17025 accredited lab[7]
- Total formulation transparency (no proprietary blends)[8]
- Made in the USA with globally sourced ingredients in NSF-certified and FDA-inspected and cGMP-compliant facilities
Pre-Workout Pump is also backed by our “No Return Necessary” money-back guarantee that works like this:
If you don’t absolutely love Pre-Workout Pump, just let us know, and we’ll give you a full refund on the spot. No forms or returns necessary.
So order now, try Pre-Workout Pump risk free, and see for yourself why we believe it’s the perfect stimulant-free alternative (or addition) to a pre-workout supplement.
Will Pre-Workout Pump give you skin-tearing pumps, vein-bursting vascularity, and superhuman strength?
No.
Will it “hyper hydrate” your muscles and maximize your “mind-muscle connection”?
Absolutely not.
But will Pre-Workout Pump help you train harder and longer, and feel fitter and stronger, without a crash or other unwanted side effects?
Yes. Or your money back.
- Total formulation transparency (no proprietary blends)[8]
- Made in the USA with globally sourced ingredients in NSF-certified and FDA-inspected and cGMP-compliant facilities
- Backed by our “No Return Necessary” money-back guarantee that works like this: If you don’t absolutely love Pre-Workout Pump, just let us know, and we’ll give you a full refund on the spot. No forms or returns necessary.
So order now, try Pre-Workout Pump risk free, and see for yourself why we believe it’s the perfect stimulant-free alternative (or addition) to a pre-workout supplement.
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 Pre-Workout Pump Ingredients (4.3 grams per serving)
Nitrosigine® Arginine (1,500 milligrams per serving)
Arginine is an amino acid found in a variety of plant and animal foods that increases the production of a gas known as nitric oxide (NO). Nitric oxide in turn widens blood vessels, improves blood flow, and increases muscular efficiency during exercise.[9][10]
Nitrosigine® is a patented form of arginine that’s more effective at increasing nitric oxide levels in the body than other more common forms of arginine, such as L-arginine, and equally effective as the current “gold standard” of NO-boosters, citrulline malate.[11]
Furthermore, research suggests that taking Nitrosigine® and citrulline malate together may produce even greater benefits as they work through slightly different mechanisms.[12]
Research shows that supplementation with Nitrosigine® . . .
- Increases blood flow[13]
- Improves muscular efficiency during exercise[14][15]
- Supports focus and cognitive function[16]
- Supports cellular energy production[17][18]
The clinically effective dose of Nitrosigine® is 1,500 milligrams.[19]
Hesperidin (500 milligrams per serving)
Hesperidin is a type of molecule known as a flavonoid, and it’s abundant in citrus fruits, especially oranges.
In addition to reducing exercise-induced oxidative stress and supporting antioxidant production, hesperidin stimulates the production of nitric oxide (NO) in blood vessels and muscles, which widens blood vessels, improves blood flow, and increases muscular efficiency during exercise.[20][21][22][23][24][25][26]
Research shows that supplementation with hesperidin . . .
- Increases anaerobic exercise performance[27][28][29]
- Boosts power output during intense exercise[30][31]
- Improves blood flow[32][33][34]
The clinically effective dose of hesperidin is 500 milligrams.
Grape Seed Extract (300 milligrams per serving)
Grape seed extract is a substance derived from the ground-up seeds of red wine grapes, and it has long been used in European medicine.
It contains a powerful antioxidant known as procyanidin B2, which reduces oxidative stress in your circulatory system and raises levels of an enzyme called nitric oxide synthase, which increases blood flow to the muscles and joints and improves the body’s ability to efficiently use oxygen during exercise.
Research shows that supplementation with grape seed extract . . .
- Increases blood flow[35][36]
- Improves exercise efficiency and endurance[37]
- Reduces post-exercise muscle damage[38]
The clinically effective dose of grape seed extract is 150-to-300 milligrams
Taurine (2,000 milligrams per serving)
Taurine is an amino acid found primarily in seafood and meat that plays an important role in cardiovascular and muscle function by protecting cells from oxidative stress, supporting metabolism, and regulating inflammation levels and the release of neurotransmitters.[39][40]
Research shows that supplementation with taurine . . .
- Improves muscular endurance and power[41][42]
- Supports healthy blood pressure levels during exercise[43][44]
- Reduces post-exercise muscle soreness[45][46][47][48]
The clinically effective dose of taurine is 1-to-6 grams per day, with research showing the majority of benefits come from ~1-to-3 grams.
100% 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.[49][50][51][52][53][54]
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 insulin sensitivity, enhanced cholesterol profile, lower inflammation levels, and more.[55][56][57][58]
No Artificial Food Dyes or Other Chemical 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.[59][60][61][62][63]
That’s why we use natural coloring derived from fruits and other foods, as well as natural flavoring.
Third-Party Lab Tested for Potency & Purity
Every bottle of Pre-Workout Pump 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.
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.
Natural Ingredients
Pre-Workout Pump doesn’t just “contain natural ingredients”—every ingredient is naturally sourced. We don’t use artificial or synthetic substances of any kind.
Clinically Effective Ingredients & Doses
Every ingredient and dose (important!) in Pre-Workout Pump is backed by peer-reviewed scientific research demonstrating clear benefits.
Naturally Sweetened & Flavored
Pre-Workout Pump is naturally sweetened and flavored with healthy, plant-based sweeteners and flavors.
Third-Party Lab Tested
Pre-Workout Pump 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
Pre-Workout Pump 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"
Money-Back Guarantee
If you don't absolutely love Pre-Workout Pump, 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 pump supplements are all-natural. Some contain the right mix of high-quality ingredients. Some provide clinically effective doses. But only Pre-Workout Pump checks each of these boxes.↑
Pre-Workout Pump doesn’t just “contain natural ingredients''—every ingredient is naturally sourced from plants and animals. Pre-Workout Pump contains no artificial or synthetic substances of any kind.↑
Every serving of Pre-Workout Pump contains 4.3 grams of active ingredients that have been shown to be safe and effective in peer-reviewed scientific research.↑
Each active ingredient in Pre-Workout Pump is backed by published scientific studies that show benefits in healthy humans.↑
That’s 370 pages of scientific research that shows Pre-Workout Pump works exactly like 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 you won’t find them in Pre-Workout Pump.↑
Every bottle of Pre-Workout Pump 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 Pre-Workout Pump—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.↑
Förstermann U, Sessa WC. Eur Heart J. 2012;33(7):829-837d. doi:10.1093/eurheartj/ehr304. ↑
Zhao Y, Vanhoutte PM, Susan W.S. Leung. Journal of Pharmacological Sciences. 2015;129(2):83-94. doi:https://doi.org/10.1016/j.jphs.2015.09.002. ↑
Rogers JM, Gills JL, Gray M. Journal of the International Society of Sports Nutrition. 2020;17(1). doi:https://doi.org/10.1186/s12970-020-00343-y. ↑
Ibid. ↑
Ibid. ↑
Maughan RJ, Burke LM, Jir̆í Dvor̆ák, et al. British Journal of Sports Medicine. 2018;52(7):439-455. doi:https://doi.org/10.1136/bjsports-2018-099027. ↑
Jones AM. Sports Medicine. 2014;44(S1):35-45. doi:https://doi.org/10.1007/s40279-014-0149-y. ↑
Kalman D, Harvey PD, Perez Ojalvo S, Komorowski J. Nutrients. 2016;8(11):736. Published 2016 Nov 18. doi:10.3390/nu8110736. ↑
Maughan RJ, Burke LM, Jir̆í Dvor̆ák, et al. British Journal of Sports Medicine. doi:https://doi.org/10.1136/bjsports-2018-099027. ↑
Jones AM. Sports Medicine. 2014;44(S1):35-45. doi:https://doi.org/10.1007/s40279-014-0149-y. ↑
Rogers JM, Gills JL, Gray M. Journal of the International Society of Sports Nutrition. 2020;17(1). doi:https://doi.org/10.1186/s12970-020-00343-y. ↑
Martínez-Noguera FJ, Marín-Pagán C, Carlos-Vivas J, Rubio-Arias JA, Alcaraz PE. Nutrients. 2019;11(8):1898. Published 2019 Aug 14. doi:10.3390/nu11081898. ↑
Martínez-Noguera FJ, Marín-Pagán C, Carlos-Vivas J, Alcaraz PE. Nutrients. 2020;12(12):3911. Published 2020 Dec 21. doi:10.3390/nu12123911.↑
Martín León V, Luzardo OP. Food Chem Toxicol. 2020;146:111812. doi:10.1016/j.fct.2020.111812.↑
Brkić D, Bošnir J, Bevardi M, et al. Afr J Tradit Complement Altern Med. 2017;14(3):31-41. Published 2017 Mar 1. doi:10.21010/ajtcam.v14i3.4. ↑
Martínez L, Bastida P, Castillo J, Ros G, Nieto G. Antioxidants. 2019; 8(6):184. https://doi.org/10.3390/antiox8060184.↑
Williams TD, Martin MP, Mintz JA, Rogers RR, Ballmann CG. J Strength Cond Res. 2020;34(4):924-928. doi:10.1519/JSC.0000000000003509.↑
Ranchal-Sanchez A, Diaz-Bernier VM, De La Florida-Villagran CA, Llorente-Cantarero FJ, Campos-Perez J, Jurado-Castro JM. Nutrients. 2020;12(7):1912. Published 2020 Jun 28. doi:10.3390/nu12071912.↑
McMahon NF, Leveritt MD, Pavey TG. Sports Med. 2017;47(4):735-756. doi:10.1007/s40279-016-0617-7.↑
Domínguez R, Maté-Muñoz JL, Cuenca E, et al. J Int Soc Sports Nutr. 2018;15:2. Published 2018 Jan 5. doi:10.1186/s12970-017-0204-9.↑
European Food Safety Authority. Published June 5, 2008. Accessed December 3, 2023. ↑
Domínguez R, Maté-Muñoz JL, Cuenca E, et al. J Int Soc Sports Nutr. 2018;15:2. Published 2018 Jan 5. doi:10.1186/s12970-017-0204-9.↑
European Food Safety Authority. Published June 5, 2008. Accessed December 3, 2023.↑
Martín León V, Luzardo OP. Food Chem Toxicol. 2020;146:111812. doi:10.1016/j.fct.2020.111812.↑
Brkić D, Bošnir J, Bevardi M, et al. Afr J Tradit Complement Altern Med. 2017;14(3):31-41. Published 2017 Mar 1. doi:10.21010/ajtcam.v14i3.4. ↑
Martínez L, Bastida P, Castillo J, Ros G, Nieto G. Antioxidants. 2019; 8(6):184. https://doi.org/10.3390/antiox8060184.↑
Maughan RJ, Burke LM, Jir̆í Dvor̆ák, et al. British Journal of Sports Medicine. 2018;52(7):439-455. doi:https://doi.org/10.1136/bjsports-2018-099027. ↑
Jones AM. Sports Medicine. 2014;44(S1):35-45. doi:https://doi.org/10.1007/s40279-014-0149-y. ↑
Maughan RJ, Burke LM, Jir̆í Dvor̆ák, et al. British Journal of Sports Medicine. 2018;52(7):439-455. doi:https://doi.org/10.1136/bjsports-2018-099027.↑
Kim J, So WY. J Exerc Sci Fit. 2019;17(2):77-79. doi:10.1016/j.jesf.2019.01.001.↑
Wu J, Prentice H. Role of taurine in the central nervous system. Journal of Biomedical Science. 2010;17(Suppl 1):S1-S1. doi:https://doi.org/10.1186/1423-0127-17-s1-s1. ↑
Tsuchiya Y, Kawamata K. Anim Sci J. 2017;88(11):1763-1767. doi:10.1111/asj.12829. ↑
Waldron M, Patterson SD, Tallent J, Jeffries O. Sports Med. 2018;48(5):1247-1253. doi:10.1007/s40279-018-0896-2.↑
Souza DB, Del Coso J, Casonatto J, Polito MD. Eur J Nutr. 2017;56(1):13-27. doi:10.1007/s00394-016-1331-9.↑
Ulusoy KG, Kaya E, Karabacak K, et al. Korean J Physiol Pharmacol. 2017;21(6):617-623. doi:10.4196/kjpp.2017.21.6.617. ↑
Sun Q, Wang B, Li Y, et al. Hypertension. 2016;67(3):541-549. doi:10.1161/HYPERTENSIONAHA.115.06624. ↑
Kurtz JA, VanDusseldorp TA, Doyle JA, Otis JS. J Int Soc Sports Nutr. 2021;18(1):39. Published 2021 May 26. doi:10.1186/s12970-021-00438-0. ↑
da Silva LA, Tromm CB, Bom KF, et al. Appl Physiol Nutr Metab. 2014;39(1):101-104. doi:10.1139/apnm-2012-0229. ↑
Ra SG, Akazawa N, Choi Y, et al. Adv Exp Med Biol. 2015;803:765-772. doi:10.1007/978-3-319-15126-7_61.↑
McLeay Y, Stannard S, Barnes M. Antioxidants (Basel). 2017;6(4):79. Published 2017 Oct 17. doi:10.3390/antiox6040079.↑
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. ↑
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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. ↑
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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. ↑