StimRush V3


Finding the perfect pre workout is no easy task. Goldilocks thought she had it tough having to choose between 3 options, but the modern day athlete literally has thousands of different pre workouts to choose from when purchasing their training fuel.


The problem with 99% of the pre workouts on the market is that they’re poorly formulated -- over-stimmed, under-stimmed, or improperly dosed. On top of that, the ones that are decently formulated are pretty much undrinkable by modern supplement standards.


BPS Nutrition surveyed the current landscape of pre workouts and said, ENOUGH!


They’ve created the ultimate pre workout that hits all the right notes, at all the right doses.


StimRush is the result of countless hours of research and development to deliver the most complete, well rounded pre workout that also tastes great. Each serving delivers the energy you need to survive the most intense workouts and the pumps to match. One sip of StimRush and you’ll wonder why no other supplement tastes this phenomenal.


Are you ready for the rush?!

Benefits of StimRush

Supplementing with BPS StimRush may lead to:


  • Increased motivation

  • Heightened focus

  • Immediate and prolonged energy

  • Monstrous pumps

  • Accelerated performance

  • Increased Nitric Oxide production

  • Enhanced fat burning

  • Supports muscle growth

  • Greater endurance

  • Phenomenal flavoring




Nothing is better than getting a massive, raging pump during your workout. Something about those gorging veins and bulging muscles  just makes you feel unstoppable in the gym.

You’re guaranteed to have a tremendous pump during your workout thanks to 4 grams of pure L-Citrulline, one of the most effective nitric oxide boosting compounds available.


L-Citrulline has been shown to be significantly better for increasing nitric oxide production than L-Arginine due to its superior bioavailability in the body.[1] Greater nitric oxide production means you’ll have superior vascularity, blood flow, vasodilation, and most important of all, PUMPS!


Citrulline also increases oxygen utilization and exercise performance and, it even reduces feelings of muscle fatigue and soreness after training.[2,3]


Betaine Anhydrous (2.5g)


Betaine has quickly become one of the many “staple” ingredients natural athletes use to enhance their power and strength. The active metabolite of choline, betaine first gained notoriety when researchers discovered in it increased strength and lean mass in a similar manner to that of creatine. Betaine has been shown to work synergistically with creatine to enhance endogenous creatine production, enabling you to perform at a higher level for longer periods of time.[4,5]

Beta Alanine (2g)


At the beginning of a workout, you’re firing on all cylinders and performance is at an all-time high. However, the deeper you get into your workout, the faster you begin to fatigue and your endurance is rapidly fleeting. That doesn’t always have to be the case though, if you’ve got beta alanine by your side!


Beta alanine is the incredibly popular endurance-boosting supplement that increases your stamina by increasing carnosine concentrations in your muscles.[6] Carnosine is a powerful compound that buffers acidic ion accumulation in your muscles, offsetting the “burn” that hits mid-set, enabling you to sustain your high level of performance all workout long. This promotes greater endurance, strength, and performance[7,8,9], qualities important to any athlete.


Taurine (1g)

Taurine is a conditionally essential amino acid found abundantly in the brain and skeletal muscle tissue. In skeletal muscle, taurine functions as an osmolyte[10], regulating fluid balance and cell volume as well as supporting cellular hydration. This amino acid improves performance, helps reduce the onset of fatigue, and aids hydration.


Taurine also interacts with GABA receptors in the brain[11], which researchers believe is the reason taurine exerts anxiolytic (anxiety-reducing) effect. Combining it with caffeine, our next ingredient, may help to tighten the focus and offset jitters some individuals experience when taking caffeine, providing a sustained and controlled energy experience.


Caffeine Anhydrous (350mg total)


Few things give you the increased energy, motivation, and desire to train hard like caffeine. It’s been around for thousands of years and has been powering athletes to greatness since the first caveman outran a ravenous cheetah.

StimRush includes a robust 350mg pure caffeine anhydrous giving you an immediate surge of energy, motivation, and aggression. But, StimRush isn’t all about the caffeine, as you’ll soon see, there’s several other stimulants included to support the intense energy experience that is StimRush.


Hordenine (50mg)


Found in Citrus Aurantium and barley, hordenine is a powerful beta-2 adrenergic agonist that stimulates the body’s natural fat burning processes[12], helping your body to use fat for fuel while training, thereby sparing your glycogen stores for the really intense work.

Hordenine also helps relax bronchial passages and increase blood flow, which supports easier breathing and better oxygen and nutrient delivery during training, both of which aid athletic performance.


It’s also worth noting that hordenine serves as a noradrenaline reuptake modulator, which prolongs noradrenaline activity in the body leading to increased energy, alertness, and focus.[13,14]


Theobromine (50mg)


Theobromine is a chemical relative of caffeine, another xanthine molecule. It’s found naturally in dark chocolate, kola nut, and tea leaves.


While structurally similar to caffeine, theobromine provides a much more subtle energy boost compared to the harsh, immediate energy rush of caffeine. Combining the two provides a “best of both worlds” approach, where caffeine gives you the instant energy to get to work in the gym, while theobromine provides the sustained energy that may help offset any potential crash users experience from caffeine.


Additionally, theobromine also differs from caffeine in that it is a vasodilator. As a vasodilator, theobromine helps widen and relax blood vessels, reducing blood pressure and promoting greater blood flow.[15,16,17] With greater blood flow, comes increased oxygen and nutrient delivery to working muscles, which enhances athletic performance, endurance, and pumps!


Cocoabuterol (25mg)


Cocoabuterol is a patented cocoa extract standardized to 50% cocoa alkaloids, supplying N-Coumaroyldopamine, N-Caffeoyldopamine, EGCG and Theobromine.


N-coumaroyldopamine and N-caffeoyldopamine can stimulate β2 adrenoceptors[18], increasing cAMP levels, which support fat loss and muscle growth.


The inclusion of EGCG in cocoabuterol is highly important, as it inhibits the enzyme COMT (catechol-O-methyltransferase) that breaks down N-coumaroyldopamine and N-caffeoyldopamine.[19,20]


Through COMT inhibition, N-coumaroyldopamine and N-caffeoyldopamine can stay active longer, promoting increased cAMP levels via beta-adrenoceptor agonism, supporting muscle growth and fat burning.


Yohimbine (2.5mg)


To bring the complete energy rush experience of StimRush together, BPS Nutrition includes the powerful CNS stimulant yohimbine. Used in combination with caffeine and the other powerful beta receptor agonists, yohimbine gives StimRush the kick that really sends its energy surge over the top.


Yohimbine is an Alpha-2-Adrenergic receptor antagonist that increases adrenaline (epinephrine) and noradrenaline (norepinephrine) levels in the body, activating the “fight or flight” response. This prominent energy booster also supports fat burning by inhibiting the fat storing mechanisms of your body.[16]

With yohimbine, you’ll be more alert, focused, and energized, while also torching fat at the same time!





To assess tolerance, mix 1 scoop StimRush with 6oz of water 15-20 minutes prior to training. If well tolerated, mix 2 scoops with 12oz of water 15-20 minutes before training. DO NOT exceed 2 scoops per day.


Get Ready for the Rush!


There’s no denying that StimRush provides the most balanced and comprehensive formula on the market. Energy, pumps, focus, and performance -- StimRush gives it all to you, along with next-level flavoring.


You’ve demanded the best, and we’ve delivered it to you with StimRush. Now, it’s up to you to put in the work!



  1. Curis E., et. al; “Citrulline and the gut;”; Current Opinion in Clinical Nutrition and Metabolic Care; September 2007

  2. Bailey SJ, Blackwell JR, Lord T, Vanhatalo A, Winyard PG, Jones AM. l-Citrulline supplementation improves O2 uptake kinetics and high-intensity exercise performance in humans. J Appl Physiol (1985). 2015 Aug 15;119(4):385-95

  3. Suzuki T, Morita M, Kobayashi Y, Kamimura A. Oral L-citrulline supplementation enhances cycling time trial performance in healthy trained men: Double-blind randomized placebo-controlled 2-way crossover study. Journal of the International Society of Sports Nutrition. 2016;13:6. doi:10.1186/s12970-016-0117-z.

  4. Lee EC, Maresh CM, Kraemer WJ, et al. Ergogenic effects of betaine supplementation on strength and power performance. Journal of the International Society of Sports Nutrition. 2010;7:27. doi:10.1186/1550-2783-7-27.

  5. Trepanowski JF, Farney TM, McCarthy CG, Schilling BK, Craig SA, Bloomer RJ. The effects of chronic betaine supplementation on exercise performance, skeletal muscle oxygen saturation and associated biochemical parameters in resistance trained men. J Strength Cond Res. 2011;25. doi:10.1519/JSC.0b013e318217d48d.

  6. Baguet, A et al.; Journal of Applied Physiology; “Important role of muscle carnosine in rowing performance;” July 2010;” 2005

  7. Roger C. Harris; et al.; “The effect of a supplement containing β-alanine on muscle carnosine synthesis, ventilatory threshold and exercise capacity in Korean cyclists, during 12 weeks combined endurance and weight training

  8. Hill, CA et al.; Amino Acids; “Influence of beta-alanine supplementation on skeletal muscle carnosine concentrations and high intensity cycling capacity ;” February 2007

  9. Kendrick IP, et al. The effects of 10 weeks of resistance training combined with beta-alanine supplementation on whole body strength, force production, muscular endurance and body composition. Amino Acids. (2008)

  10. Burg MB, Ferraris JD. Intracellular Organic Osmolytes: Function and Regulation. The Journal of Biological Chemistry. 2008;283(12):7309-7313. doi:10.1074/jbc.R700042200.

  11. Dombovy-johnson, M. (2012). The Effects of Taurine and Caffeine Alone and in Combination on Locomotor Activity in the Rat. Colgate Academic Review, 7(Spring 2010), 170–188.

  12. Frank M, et al; Hordenine: pharmacology, pharmacokinetics and behavioural effects in the horse; Equine Vet J. (1990)

  13. Barwell CJ, Basma AN, Lafi MA, Leake LD. Deamination of hordenine by monoamine oxidase and its action on vasa deferentia of the rat. J Pharm Pharmacol. 1989;41(6):421-423.

  14. Nedergaard O.; British Journal of Pharmacology; Action of various sympathomimetic amines on the isolated stripped vas deferens of the guinea-pig. November 1968

  15. Baggott MJ, Childs E, Hart AB, et al. Psychopharmacology of theobromine in healthy volunteers. Psychopharmacology. 2013;228(1):109-118. doi:10.1007/s00213-013-3021-0.

  16. CORNISH, H. H., & CHRISTMAN, A. A. (1957). A study of the metabolism of theobromine, theophylline, and caffeine in man. The Journal of Biological Chemistry, 228(1), 315–323.

  17. Nehlig A. The neuroprotective effects of cocoa flavanol and its influence on cognitive performance. British Journal of Clinical Pharmacology. 2013;75(3):716-727. doi:10.1111/j.1365-2125.2012.04378.x.

  18. Park, J. B. (2005). N-coumaroyldopamine and N-caffeoyldopamine increase cAMP via beta 2-adrenoceptors in myelocytic U937 cells. FASEB Journal : Official Publication of the Federation of American Societies for  Experimental Biology, 19(6), 497–502.


  20. Lu, H., Meng, X., & Yang, C. S. (2003). Enzymology of Methylation of Tea Catechins and Inhibition of Catechol-<em>O</em>-methyltransferase by (−)-Epigallocatechin Gallate. Drug Metabolism and Disposition, 31(5), 572 LP-579. Retrieved from

  21. Berdeaux R, Stewart R. cAMP signaling in skeletal muscle adaptation: hypertrophy, metabolism, and regeneration. American Journal of Physiology - Endocrinology and Metabolism. 2012;303(1):E1-E17. doi:10.1152/ajpendo.00555.2011.

  22. Hedner T, et al. Yohimbine pharmacokinetics and interaction with the sympathetic nervous system in normal volunteers. Eur J Clin Pharmacol. (1992)

Write a Review

13 Reviews Hide Reviews Show Reviews

  • 5
    Best Pre-workout ever

    Posted by Q Rollins on Aug 15th 2018

    This is the best pre-workout I've tried. Not too much stim, perfect focus, no crash. I can't believe how good it is! I bought this on the BOGO sale, have been using it for most workouts for a while. Still works like it did the first time ,no burnout, no tolerance build up. Just a nice clean, clear, full workout every time. My only complaint IT'S SOLD OUT!!!!!!! Please get more soon. I'm completely out! Every time I have to use a different pre-workout it just reminds me of how good I once had it.

  • 4
    pre work out

    Posted by Dale McEntire on Jul 11th 2018

    good pre workout, had great focus and was able to get in a great workout, flavor was good as well, nice warm feeling but not to where your drenched really like this pre

  • 4
    Good Pre-Workout

    Posted by Chad on Jun 22nd 2018

    I normally don't write reviews but thought I should with this one. Like others have said this is not a powder more of a sticky clumpy mess in a bottle. How ever, mixes great, fruit punch flavor is very light, not sugary tasting like all the others. Energy levels are good and not out of control. I do like this one even though it looks bad once you open it.

  • 5
    Smooth focus and energy

    Posted by Dan on Jun 13th 2018

    Took 2 scoops about 60 minutes before my workout today and as the review subject says, both focus and energy were smooth. My only 'gripe' is that upon delivery the powder had become a bit sticky/clumpy. Mixability was unaffected, however. The 'Blue Smashberry' flavour is fantastic, too. Highly recommended!

  • 5
    Pre work out

    Posted by Gabriel Reyna on Jun 12th 2018

    Toss up between this and ape shit, both are killer for pump focus and blood flow. Great product.

  • 5
    Great Stuff

    Posted by David on Jun 11th 2018

    This is the best pre work I have used, other than Mega Pre.. Very good pumps and focus.. I highly recommend to anyone..

  • 5

    Posted by Dadski on Jun 11th 2018

    When I got the STIMPreWorkout I look at the container I though this PreWorkout was garbage because it was moisted. I try 1 scop of the StimRush before my workout and I Never expected the ENERGY and GOOD PUMP of this product. StimRush is now one of my best list in Pre Work. I recommend this to the other costumer. Try it and write your review after taking this PREWORKOUT

  • 5
    Great, hard hitting pre workout!

    Posted by Caleb on Jun 11th 2018

    This is one of the best pre workouts I have had. I am a storm junky, so this stuff is the real deal! The pumps were pretty good too, even though it's not very pump focused in the formula. Overall, it's a good all around pre workout with an insane energy blend!

  • 4

    Posted by Mae Couture on Jun 11th 2018

    Works very well, not too intense to the point where you feel you may have a heartattack during your workout, but still amps you up. Love it.

Statements on this website have not been evaluated by the Food and Drug Administration. Products are not intended to diagnose, treat, cure, or prevent any disease.