LEGION- All Natural Nitric Oxide Preworkout Drink to Boost Energy, Creatine Free, Naturally Sweetened, Beta Alanine, Citrulline, Alpha GPC (Watermelon)
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Thursday, Sep 18
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Flavor Name: Watermelon
Features
- Get the only naturally sweetened and flavored pre workout powder with clinically effective doses of 6 ingredients that increase energy, focus, strength, and stamina without any jitters or post-workout crash.
- 54 peer-reviewed scientific studies support the effectiveness of Pulse preworkouts precise combination of ingredients and doses. Thats 508 pages of scientific research that shows Pulse prework out works the way we say it does.
- Best preworkout with no artificial sweeteners, flavors, food dyes, fillers, or other unnecessary junk. 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.
- Clean pre workout and transparent label that shows exactly whats in every serving of our preworkout for men and women and whats not (no proprietary blends or hidden ingredients).
- Tested for purity and potency in an ISO 17025 accredited third-party lab, and independently certified to contain no contaminants or banned substances by Labdoor. Every bottle of our Pulse pre work out is guaranteed to provide exactly what the label claims and nothing else.
Brand: LEGION
Flavor: Watermelon
Primary Supplement Type: Potassium
Unit Count: 18.4 Ounce
Item Form: Powder
Item Weight: 1 Pounds
Item dimensions L x W x H: 5.2 x 4.5 x 4.5 inches
Product Benefits: Energy Management
Age Range (Description): Adult
Package Information: Jar
Is Discontinued By Manufacturer : No
Product Dimensions : 5.2 x 4.5 x 4.5 inches; 1 Pounds
Item model number : 7.48253E+11
Date First Available : September 9, 2015
Manufacturer : Legion Athletics
Best Sellers Rank: #2,151 in Health & Household (See Top 100 in Health & Household) #9 in Sports Nutrition Pre-Workout Powders
#9 in Sports Nutrition Pre-Workout Powders:
Customer Reviews: 4.2 4.2 out of 5 stars 17,310 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Sep 18
This item is non-returnable:
Non-returnable due to Food safety reasons
View our full returns policy here.
Non-returnable due to Food safety reasons
View our full returns policy here.
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Top Amazon Reviews
Flavor Name: Arctic Blast
I’ve been using this pre workout on and off for years, and I always find myself coming back to it. The energy is clean and steady; no jitters, no crash hours later, just solid focus and endurance. I really like that it’s a two-scoop formula, so I can adjust the dose depending on the day or workout. Some days I only need one scoop and still feel the boost. Flavor’s great too, no weird aftertaste or overly sweet nonsense. I buy whichever flavor is on sale. They go on sale pretty often. Overall, a consistent go to in my stack. Great for both seasoned gym goers and anyone new looking for something dependable.
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Reviewed in the United States on June 28, 2025 by Hhuynh923
Flavor Name: Fruit Punch
The LEGION Pulse Pre Workout Supplement has become my ultimate workout companion, providing me with the natural energy and focus needed to crush my fitness goals. As someone who prefers clean and natural supplements, this product ticks all the boxes and has quickly become a staple in my fitness routine. One of the standout features of this pre-workout is its all-natural formula. It is creatine-free and does not contain any artificial sweeteners or additives. The use of natural ingredients gives me confidence in the quality and effectiveness of the product, without any unwanted side effects or jitters. The energy boost from LEGION Pulse is remarkable. Unlike other pre-workouts that rely on excessive caffeine, this supplement utilizes natural sources of energy, such as caffeine from green tea extract and theacrine. This provides me with a sustained and smooth energy lift, helping me power through even the most intense workouts without the dreaded crash afterward. The nitric oxide boosting properties of this pre-workout are also impressive. The combination of L-citrulline and ornithine increases blood flow and pumps, enhancing my overall workout performance and muscle endurance. I've noticed improved vascularity and strength gains since incorporating this product into my routine. I appreciate that LEGION Pulse is naturally sweetened with stevia and erythritol, avoiding the use of artificial sugars and providing a pleasant taste without the excessive sweetness. The transparency of the product's label is commendable. LEGION provides full disclosure of all ingredients and their dosages, allowing me to make an informed decision about what I'm putting into my body. Another standout aspect of this pre-workout is its versatility. I can easily adjust the serving size based on my energy needs for the day. On days when I need an extra boost, I take a full scoop, and on lighter workout days, half a scoop suffices. As a fitness enthusiast, I prioritize my health and well-being. The fact that LEGION Pulse is free from banned substances and third-party tested for purity and potency provides me with peace of mind, knowing that I'm using a safe and reliable product. In conclusion, LEGION Pulse Pre Workout Supplement has exceeded my expectations and stands out as one of the best all-natural pre-workouts on the market. Its clean and effective formula, combined with natural energy sources and nitric oxide boosters, make it a superior choice for anyone seeking a reliable and performance-enhancing pre-workout. With LEGION Pulse, I've experienced enhanced focus, energy, and muscle pumps during my workouts, allowing me to push my limits and achieve my fitness goals. Whether you're a seasoned athlete or a fitness enthusiast, I highly recommend giving LEGION Pulse a try and experiencing the difference it can make in your training sessions!
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Reviewed in the United States on August 2, 2023 by Real Deal
Flavor Name: Fruit Punch
I'm a big fan of Legion products and their overall mission. You can see all the ingredients below, although Mike always does a great job of breaking everything down. So why not a perfect five stars? Well, it's expensive...I know you get what you pay for..but still (especially at only 21 servings). I also wish there was a bigger energy boost. I find it to be a little lacking. Part of that is probably my fault as I should regularly take a break from all stimulants, but I find that hard to do because of the immediate headaches and withdrawal symptoms from caffeine. Overall, you can't go wrong with trying this at least once. L-Citrulline Malate Citrulline is a precursor to the amino acid Arginine, which is a precursor to Nitric Oxide (NO). As demonstrated in a 2007 study, supplemental Citrulline is significantly more effective at raising plasma Arginine than supplemental Arginine itself, and while results with Arginine are mixed, Citrulline has demonstrated clear efficacy as a performance enhancer. The problem with supplemental Arginine is that it is metabolized in the intestines and liver into other substances such as Ornithine and Urea. The intestines and liver contain relatively high levels of Arginase, the enzyme that converts Arginine to Ornithine and Urea. As a result, very little goes on to be involved with the synthesis of NO because it is being diverted for other purposes. Citrulline, on the other hand, is able to bypass the liver and is metabolized into Arginine elsewhere, where not as much Arginase is present. Thus, more of the Arginine is able to go on to convert into Nitric Oxide. A 2002 study, published in the “British Journal of Sports Medicine” found that Citrulline Malate supplementation (6g/day for 15 days) significantly increased ATP production during exercise in healthy adult males. A 2008 study from “The Journal of Strength & Conditioning” found that 8g of Citrulline Malate was able to progressively increase the amount of reps performed later in the workout (by as much as 52%) and significantly reduced muscle soreness. A 2009 study, published in the “Journal of Free Radical Research”, found that 6 grams of Citrulline Malate given to male cyclists before a race increased “plasma Arginine availability for NO synthesis and PMNs priming for oxidative burst without oxidative damage”. A 2011 study, the subjects of which were rats, found that supplemental Citrulline increased muscular contraction efficiency (less ATP was required for the same amount of power), in-line with the findings of the above-mentioned human study. Citrulline is generally considered to be most effective at doses of 6-8g, though it is rare to find that much in pre-workout supplements (it gets kind of expensive). Pulse contains a highly effective 8 gram dose of Citrulline (as Citrulline Malate) per serving, consistent with the dose used in the above mentioned 2008 study and beyond that used in most other studies. Beta-Alanine Beta-Alanine is a precursor to the amino acid Carnosine, which functions as a lactic acid buffer capable of reducing fatigue in the working muscle. Though it takes time to accumulate in muscle tissue, Beta-Alanine supplementation, for at least two weeks, is highly effective at increasing muscular Carnosine concentration. One study in particular that measured the Carnosine levels of sprinters found that individuals with higher muscular Carnosine levels exhibited higher power output in the latter half of a 30m sprint (because they had less lactic acid build-up). Multiple studies have confirmed that Beta Alanine supplementation increases muscular Carnosine in a dose dependent manner. In particular, a 2012 study published in “Amino Acids” found that subjects who consumed 1.6 or 3.2 grams of Beta Alanine daily experienced significant increases in muscle carnosine in as little as two weeks, with the higher dose achieving a higher concentration of Carnosine. The doses used in this study, 1.6 and 3.2g, are the most common doses seen in supplements. A 2008 study, published in the International Journal of Sports Medicine, noted improvements in power in resistance trained males using 4.8g daily for 30 days. This same 4.8 gram dose was also shown to increase muscular endurance in sprinters in a 2007 study from the “Journal of Applied Physiology”. Generally speaking, the highest dose used in most pre-workouts is 3.2g because that is, after all, an effective dose. However, Legion has gone the extra mile with Pulse by including 4.8 grams of Beta-Alanine per serving, in-line with the highest, most effective dose used in studies, and more than we’ve ever seen in any pre-workout. Betaine Anhydrous Betaine (also known as Trimethylglycine) is the amino acid Glycine with the addition of three methyl groups attached. Betaine is alleged to increase power output and strength by increasing cellular swelling, a phenomenon well established with Creatine supplementation, which can drastically reduce the damaging effect of outside stimuli (such as exercise) on the working muscle. So far, Betaine has been investigated in several human studies, and has had some pretty encouraging results in most. A 2009 study, published in the “Journal of the International Society of Sports Nutrition”, found that 2.5g Betaine (split into two 1.25mg doses) over the course of 15 days increased muscle endurance during squats and appeared to improve the quality of each rep (likely because they were easier). A 2010 study, again from the “Journal of the International Society of Sports Nutrition”, found that the same supplementation protocol (2.5g daily in two equal doses) effectively increased isometric bench press and squat force as well as bench throw and vertical jump power. A 2011 study, published in “The Journal of Strength & Condition Research” noted improvements in number of bench press repetitions and total volume load with same 2.5g dosing protocol for 14 days. However, another 2011 study from the same journal noted no such improvements in power output or number of reps performed, though there were subjective reports of fatigue reduction. A 2012 study from the “Journal of the International Society of Sports Nutrition” noted improvements in cycling sprint power after just one week of supplementation at the standard 2.5g dose. Most recently, a 2013 study published in the Journal of the International Society of Sports Nutrition” noted increases in arm size, bench press work capacity, overall body composition, and a trend toward increased power (but not strength). This was the first study to specifically measure the effects of Betaine supplementation on body composition, so further study is needed to corroborate these findings. Pulse contains the standard dose of Betaine used in the above mentioned studies of 2.5g, a highly effective amount which eliminates the need to take two daily doses. Ornithine Ornithine is an amino acid used alongside Arginine and Citrulline in the Urea Cycle, the process by which Ammonia is metabolized into the harmless substance Urea. Prolonged exercise generally brings about increases in Ammonia, which causes fatigue in the working muscle after enough has built up. As evidenced in a 2010 study published in the European Journal of Clinical Nutrition, supplemental Ornithine, at a dose of 100mg/kg, has failed to influence fatigue in short duration exercise. However, a 2008 study from “Nutrition Research” noted a significant reduction in fatigue during prolonged exercise in healthy volunteers who consumed 2g Ornithine daily for 6 days and 6g prior to testing. Unfortunately, because of the structure of this study, it is unclear whether Ornithine requires “build-up time” or if acute supplementation is effective. Either way, it appears Ornithine will only be noticeably effective during prolonged exercise, when Ammonia would usually cause fatigue. Pulse contains 2200mg of L-Ornithine, much more than the average Ornithine-containing pre-workout which may be somewhat synergistic with the hefty dose of Citrulline that Legion has also packed into the Pulse formula. Theanine In a 2008 study, published in “Nutritional Neuroscience”, researchers investigated the cognitive effects of a combination of Theanine and Caffeine compared to Caffeine alone on various measures of cognitive performance. Participants received either 50mg of Caffeine or 50mg of Caffeine and 100mg of Theanine before completing various tasks including word recognition, visual image processing, and attention switching. While Caffeine was able to increase alertness and accuracy during the attention switching tasks, the combination of Caffeine and Theanine was able to improve both performance and speed, while reducing the subjects’ susceptibility to distraction. Another 2008 study from “Biological Psychology” found that, while 150mg of Caffeine increased alertness and improved (decreased) reaction time, adding 250mg of Theanine further improved reaction time, alertness, and decreased the number of headaches reported from Caffeine. A 2010 study, also from “Nutritional Sciences”, found that the combination of 97mg of Theanine combined with 40mg Caffeine significantly improved focus and attention on various cognitive tests, compared to placebo. Another 2010 study, this one published in “Appetite”, noted an improvement in task-switching ability using the same 97mg Theanine/40mg Caffeine combination. Theanine is, in our view, a very under-utilized ingredient in pre-workout supplements these days. Despite a well-established synergistic relationship with Caffeine, supplement companies seem reluctant to include Theanine in effective doses mostly because of cost issues (it is relatively expensive). However, Pulse contains a highly effective 350mg of Theanine to go alongside the 350mg of Caffeine. Caffeine Anhydrous Caffeine is a well-established ergogenic aid, oral consumption of which triggers the release of Catcholamines (Noradrenaline, Dopamine, Adrenaline, etc.), generally inducing a state of increased alertness, focus, and perceived energy. A vast multitude of studies have concluded that Caffeine consumption prior to exercise can favorably impact performance and enhance muscle contractibility. Since habitual Caffeine consumption often leads to tolerance build-up, those seeking to get the most out of their Caffeine-containing pre-workout should limit Caffeine throughout other parts of the day. Pulse contains 350mg of Caffeine which is enough to make even a somewhat Caffeine-tolerant individual feel noticeably more focused and alert. Though 350mg would normally be considered “jitter territory”, the 350mg dose of Theanine present in the Pulse formula may partially (if not completely) reduce the likelihood of the Caffeine causing any negative effects.
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Reviewed in the United States on March 22, 2016 by Chris
Flavor Name: Peach
Love this stuff. Avid gym goer and this is my go to pre workout. Helps get me going and lasts whole workout. Flavor is great. Quality product
Reviewed in the United States on August 8, 2025 by Cory H.
Flavor Name: Strawberry Kiwi
This is the most effective pre-workout I’ve ever used. The L-Theanine balances out the caffeine perfectly—no jitters, just clean, focused energy. I feel sharp, energized, and ready for cardio or lifting every time I take it. The taste isn’t great, but honestly, who cares? You can either sip on a great-tasting but ineffective pre-workout, or knock back something that works. I’ll take results every time. This outperforms BSN, Ghost, and every other brand I’ve tried
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Reviewed in the United States on July 24, 2025 by Brent
Flavor Name: Cherry Limeade
Clinical effective levels for the win! Solid all around preworkout. Caffeine could be a bit stronger but this is nice mid to high stim pre. Been using it as an everyday workhorse and am pleased. 0 digestive issues which isn’t the case for a lot of preworkouts these days. Mixes perfectly, no clumping, and flavor is subtle in a really good way. Just trying to throw my pre back not sip sip sip.
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Reviewed in the United States on August 1, 2025 by Bradley Schaller