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Verified by IngredientMD/Legion Athletics/Legion Pulse Pre-Workout
VERIFIED BYingredientMD

Legion Pulse Pre-Workout.

Strong evidence, strong doseLegion Athletics, verified Oct 2026Formula verified. Independently reviewed.Independent review. Not commissioned by Legion Athletics.

L-Citrulline DL-Malate is the lead active here, studied most for oxygen delivery to working muscle. 16 human studies on L-Citrulline DL-Malate back this formula, each one cited. Each serving carries 8 g of L-Citrulline DL-Malate, inside the range the published research used. Who it fits: for everyone, adults.

Clinically dosedFull label disclosure
9Active ingredientsWell studiedResearch base107Human studies
Legion Pulse Pre-WorkoutVerified by IngredientMD
Legion AthleticsIngredientMD
The verdict
Strong evidence, strong dose
For everyone, adults.
How we verify

The brand submits the formula. We read the supplement facts panel and weigh dose, form and synergy against the clinical evidence. Labs test. IngredientMD verifies. The fee pays for review time, never for the outcome.

The formula
Calcium: Bone strengthExtensively studied
Sodium: EnduranceWell studied
Potassium: Electrolyte balanceExtensively studied
L-Citrulline DL-Malate: Oxygen delivery to working muscleKey driver
Beta-Alanine: Physical performanceWell studied
Betaine Anhydrous: StrengthWell studied
Caffeine Anhydrous: Physical performanceExtensively studied
L-Theanine: Focus and clear thinkingExtensively studied
Alpha-GPC: Power and repeat sprintsWell studied

How we read this product

Source: Supplement facts
Supplement Facts panel for Legion Pulse Pre-Workout
  1. 01
    We read the label.

    The panel on the left is the one we evaluated, line by line.

  2. 02
    Every active, separately.

    All 9 actives checked against the clinical evidence: dose, form, and what the research actually shows.

  3. 03
    Then the formula as a whole.

    Doses, ratios, and how the ingredients work together. That assessment is the verdict above: "Strong evidence, strong dose".

  4. 04
    Earned, not bought.

    The verdict is public and identical whether or not a brand pays. A formula that does not clear the bar gets nothing.

Read by the engine against 2.1 million data points from clinical trials, PubMed and more than a hundred vetted sources. No individual reviewer is named or implied.

The receipts

Well studied
Research base
107
Human studies
8 g
L-Citrulline DL-Malate
127 mg
Calcium
8 g per serving clears the studied 3 g minimum
L-Citrulline DL-Malate, Perez-Guisado 2010 + Bailey 2015 exercise study
3.6 g per serving clears the studied 2 g minimum
Beta-Alanine, Trexler 2015 ISSN position stand + Hobson 2012 meta
2.5 g per serving sits inside the studied 1,250 mg-2.5 g range
Betaine Anhydrous, Cholewa 2018 systematic review + Trepanowski 2011
350 mg per serving clears the studied 50 mg minimum
Caffeine Anhydrous, EFSA 2015 caffeine safety + Goldstein 2010 review

Cross-checked against 2,354 documented interactions for these actives.

Read the evidenceCalcium, the evidence →Sodium, the evidence →Potassium, the evidence →L-Citrulline DL-Malate, the evidence →Beta-Alanine, the evidence →Betaine Anhydrous, the evidence →

Inside the formula

Calcium
13 studies
Bone strength
Extensively studied
Sodium
11 studies
Endurance
Well studied
Potassium
16 studies
Electrolyte balance
Extensively studied
L-Citrulline DL-Malate
16 studies
Oxygen delivery to working muscle
Studied 3 g to 10 g a day
Key driver
Beta-Alanine
19 studies
Physical performance
Studied 2 g to 6.4 g a day
Well studied
Betaine Anhydrous
Strength
Well studied
Caffeine Anhydrous
Physical performance
Extensively studied
L-Theanine
14 studies
Focus and clear thinking
Studied 100 mg to 400 mg a day
Extensively studied
Alpha-GPC
Power and repeat sprints
Studied 300 mg to 1.2 g a day
Well studied
In context

The gap this formula speaks to.

Public health figures the engine matched to this formula's ingredients. Reported by their source, cited and dated, never written by the brand.

The people it speaks toFieldwork 2023

21.1% of the US population

aged 15 and over took part in sports, exercise, or recreation on an average day in 2023, in the American Time Use Survey.

US Bureau of Labor Statistics, 2024
This formulaNHANES 2017-2018, published 2021

57.6%

During 2017 to 2018, 57.6% of US adults aged 20 and over reported using a dietary supplement in the past 30 days.

CDC National Center for Health Statistics
42 more
Daily use

59 to 66 days

was the median time it took adults to make a new daily health habit automatic across the studies a 2024 review pooled, with individuals ranging from 4 to 335 days.

Systematic review and meta-analysis, 2024
Caffeine Anhydrous

Randomised trial, 2026

In 38 active men, caffeine before a 10 km run or 40 km cycling improved completion time by 1.8 percent, though a gene difference in caffeine levels didn't affect performance.

European Journal of Sport Science
Beta-Alanine

Systematic review and meta-analysis, 2020

Combining individual data across trials, about 99 percent of people taking beta-alanine raised their muscle carnosine, though modelling suggests typical doses don't fully saturate muscle stores.

Frontiers in Physiology
L-Theanine

Randomised trial, 2024

Over 28 days, 15 healthy adults with moderate stress taking a branded L-theanine ingredient had perceived-stress scores fall 17.98%, alongside routine safety monitoring.

Neurology and Therapy
L-Theanine

Randomised trial, 2025

Over five days, 15 young women with menstrual discomfort drinking a chamomile and theanine beverage had self-reported pain ratings fall 57.17%, with mood and sleep ratings also changing.

Journal of Food and Drug Analysis
L-Citrulline DL-Malate

Meta-analysis, 2025

Pooling 8 trials in 176 middle-aged and older adults, l-citrulline improved how well blood vessels widen by about 1.8 percentage points, with no clear change in artery stiffness.

Frontiers in Nutrition
Betaine Anhydrous

Meta-analysis, 2024

Pooling 17 trials in 317 healthy adults, at least 7 days of betaine raised maximal strength with a standardized effect of 0.47, most clearly in the lower body.

Journal of Sports Sciences
Beta-Alanine

Meta-analysis, 2026

Across 11 trials in 312 women, beta-alanine improved time to exhaustion, though several other performance measures were too imprecise to call, with very low certainty.

Front Nutr
Caffeine Anhydrous

Systematic review, 2019

Across 10 studies at matched doses, caffeine gave similar aerobic and fatigue benefits to men and women, while 4 of 7 studies found bigger strength and sprint gains in men.

Nutrients
Caffeine Anhydrous

Meta-analysis, 2022

Across 21 trials at 3 to 9 mg per kg, caffeine lengthened time to exhaustion in running and shortened race completion time compared with placebo.

Nutrients
Caffeine Anhydrous

Systematic review, 2021

Across 37 blinded crossover studies, caffeinated drinks improved several aspects of sports performance once the drink supplied at least 3 mg of caffeine per kg of body mass.

Nutrients
Beta-Alanine

Randomised trial, 2024

In 20 male volleyball players given 4.8 g of beta-alanine daily for 8 weeks of sprint training, vertical and horizontal jump gains were larger than with training alone.

Scientific Reports
Beta-Alanine

Randomised trial, 2026

In 22 resistance-trained adults given 6.4 g of beta-alanine daily for 4 weeks, repetitions completed during drop-set and bi-set training increased, with no detected change in psychological responses.

Journal of Strength and Conditioning Research
L-Theanine

Meta-analysis, 2025

In healthy adults, across trials, L-theanine with caffeine modestly improved accuracy on an attention-switching task, and L-theanine alone modestly sped up choice reaction time.

Nutrition Reviews
L-Theanine

Randomised trial, 2019

In a 4-week trial in 30 healthy adults, 200 mg a day of L-theanine improved sleep quality scores, with faster sleep onset and less disturbance.

Nutrients
L-Citrulline DL-Malate

Systematic review and meta-analysis, 2019

Across 8 trials, L-citrulline lowered the top blood pressure number by about 4 points, with a drop in the bottom number only at doses of 6 grams a day or more.

Avicenna Journal of Phytomedicine
L-Citrulline DL-Malate

Meta-analysis, 2025

Across 15 trials in middle-aged and older adults, l-citrulline or watermelon intake lowered blood pressure by about 4 points on the top number and about 2.5 points on the bottom number.

Clinical Nutrition ESPEN
Beta-Alanine

Systematic review and meta-analysis, 2017

Across 40 placebo-controlled studies in 1,461 people, beta-alanine produced a small but significant overall gain in exercise outcomes (effect size 0.18), with the clearest benefit for high-intensity efforts lasting roughly 0.5 to 10 minutes.

British Journal of Sports Medicine
Caffeine Anhydrous

Systematic review, 2010

In a Cochrane review of 13 randomized trials in shift workers, caffeine improved orientation and attention (SMD -0.55) and reduced the number of errors made during simulated night or shifted work versus placebo.

Cochrane Database of Systematic Reviews
L-Citrulline DL-Malate

Systematic review, 2026

The review of citrulline supplementation in postmenopausal women reports vascular measures as the most consistently affected domain, with muscular and metabolic findings less consistent across the included studies.

BMC Women's Health
Betaine Anhydrous

Meta-analysis, 2021

Across randomized trials, betaine supplementation lowered plasma homocysteine by about 1.3 micromol/L, and at doses under 4 g a day it did so without the rise in total and LDL cholesterol seen at higher doses.

Critical Reviews in Food Science and Nutrition
L-Theanine

Meta-analysis, 2025

Pooling the randomised trials, L-theanine was linked to small improvements in self-reported sleep quality, while objective sleep measures showed no detectable difference.

Meta-analysis
Sodium

Randomised trial, 2026

Microencapsulated sodium butyrate was tested against abdominal symptom scores and carbohydrate metabolism markers in adults with high blood sugar. Again a butyrate trial in which sodium is the carrier salt.

Scientific Reports
Sodium

Systematic review, 2026

A systematic review catalogued gastrointestinal symptoms reported across sodium bicarbonate dosing protocols and described how symptom burden varies with dose, timing and whether the dose is split or given with food.

European Journal of Sport Science
L-Citrulline DL-Malate

Meta-analysis, 2025

Across 21 randomised trials, l-citrulline showed no overall effect on body weight, fat mass or fat-free mass, with reductions in fat mass only in exploratory subgroups over age 40 or above 6 g a day.

Nutrients
Alpha-GPC

Cohort study, 2024

A genetic-instrument analysis of serum metabolites and a dermatological outcome that names glycerophosphocholine among the metabolites examined. This is an association between a circulating measure and an outcome, not evidence that supplementation changes anything.

Frontiers in Immunology
Sodium

Randomised trial, 2026

A randomised trial tested an algorithm-driven sodium supplementation protocol against usual care and measured growth in infants born preterm.

Pediatrics Open Science
Alpha-GPC

Randomised trial, 2026

Comparing four choline forms in preterm infants, the study measured blood choline levels only, a marker of delivery rather than a health outcome.

European Journal of Nutrition
Alpha-GPC

Randomised trial, 2024

A single 630 mg dose of alpha-GPC improved attention and processing speed on the Stroop test in healthy resistance-trained men, with a score change of 13.0 versus 5.2 for placebo.

Nutrients
Betaine Anhydrous

Randomised trial, 2022

In 18 recreationally trained men, 14 days of 6 g a day betaine anhydrous did not change the number of one-leg press repetitions completed, though the post-exercise rise in the marker IGF-1 was greater than with placebo.

Nutrients
Sodium

Randomised trial, 2025

In a trial of 104 very preterm infants, oral sodium supplementation raised daily weight gain by 3.6 grams per kilogram compared with placebo.

BMJ Paediatrics Open

Population figures from public health data. Context for the category, not a statement about any individual and not a claim about this product.

What this formula earned

Every one of these is a fact the engine could ground.

Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.

  • Studied in people19 human studies on Beta-Alanine back this formula, each one cited.
  • A mechanism that is settledHow Calcium and Sodium work is settled pharmacology.
  • Studied together, not just separatelyCalcium and Potassium have been studied together, not only separately.
  • Recent work on the recordThe most recent study on this record was published in 2026.
  • Serving amount inside the studied rangeEach serving carries 8 g of L-Citrulline DL-Malate, inside the range the published research used.
  • A stated daily maintenance amountL-Citrulline DL-Malate is here at a daily maintenance amount, which is what a daily supplement is for.
  • Why this formatIt is a powder, so the serving scales to the amount you want and mixes into something you already drink.
  • The exact form, describedThe label names its forms exactly: Calcium carbonate, Sodium chloride, table salt, sea salt, Potassium chloride. The record says what each one is and what it suits.
  • Full label disclosureEvery ingredient on this label carries its own declared amount.
  • Where it comes from and how it is madeCalcium is made by mineral.
  • Positions this formula already qualifies forThis formula already qualifies for positions beyond the one it is sold into, on the evidence it carries.
  • A position nobody is holding yetSome of those positions are ones almost nobody is selling to yet.
  • Interaction screen on the recordEvery active on this label was screened against the interaction record, and the screen is published with it.
How much it moves the numbers

The size of the effect, in plain numbers.

Where a trial measured an actual number, we show it next to the claim. It is the average across the trials, never a promise about one person.

Beta-Alanineexercise capacity
Average change in the trials

A median improvement of about 2.85 percent in exercise measures.

Measured in
efforts lasting about one to four minutes
Confidence interval
interquartile range -0.4 to 10.5 percent

Read at the source. The magnitude sits beside the same trial the claim already cites. It describes what the trials measured, never what any one person will feel.

What the trials show

What the trials show about timing.

Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.

  • Calciumwithin about one to six hours of a single doseMeasured within a day

    A randomised cross-over trial in ten women of mean age 69 gave a single 500 mg dose of calcium as citrate fasting, citrate with a meal, fortified juice or a dairy product meal, with blood drawn before and at 1, 2, 4 and 6 hours. Serum ionised and total calcium increased significantly from baseline over six hours, with the rise similar after fortified juice, delayed when citrate was taken with a meal and smaller after the dairy meal. A separate double-blind cross-over trial in 25 postmenopausal women measured parathyroid hormone and a bone resorption marker 12 hours after a single calcium dose. Ten participants is a small sample, and what moved was blood chemistry, not a sensation.

    Promising
  • Sodiumabout 3 days to 4 weeks of steady intakeBuilds with daily use

    In the excretion studies the EFSA reference opinion reviews, urinary output closely tracked dietary sodium once intake was held steady: 98% of dietary sodium appeared in 24-hour urine in a 3-day study, and 86% of sodium ingested over 4 weeks was recovered in 24-hour urine collected during the same period.

    Early
  • Sodiumabout 29 days at each fixed intake levelBuilds with daily use

    In the controlled metabolic study the EFSA reference opinion reviews, young men held at constant sodium intakes for 29 days per level showed rising average daily urinary aldosterone excretion as intake was stepped down from 4.9 g/day to 2.5 g/day.

    Promising
  • L-Citrulline DL-Malatewithin about 1 hour of a single doseMeasured within a day

    In a randomised double-blind crossover trial in 19 recreationally active women, a single 8 g dose of citrulline malate taken 60 minutes before testing raised total work in a 5-repetition isokinetic leg extension protocol compared with placebo, with no difference in peak torque and no difference in the 50-repetition protocol. A separate crossover trial in 10 well-trained men using 12 g 60 minutes before high-intensity cycling found no change in time to exhaustion or power.

    Early
  • Beta-Alanineabout 4 to 10 weeks of daily useBuilds with daily use

    In the trial record, muscle carnosine rises about 59% over 4 weeks of daily beta-alanine, with further gains, about 80%, by 10 weeks.

    Promising
  • Betaine Anhydrousat least 1 week of daily use, measured at 14 days in the trialBuilds with daily use

    In a randomised double-blind crossover trial in 12 resistance-trained men, 14 days of betaine at 1.25 g twice daily raised bench throw power and isometric bench press force compared with placebo, with no change in jump squat power or repetitions completed. A meta-analysis of 17 trials in 317 participants reported a modest pooled effect on maximal strength of 0.47 standardised mean difference for regimens of at least 7 days.

    Promising
3 more
  • Caffeine Anhydrouswithin about 45 to 60 minutes of a single doseMeasured within a day

    In a double-blind placebo-controlled crossover trial, 15 resistance-trained women took 4 mg per kg body mass of caffeine 60 minutes before a strength and power battery. Squat one-repetition maximum rose 4.5 percent and countermovement jump height 7.6 percent against placebo. A separate crossover trial in 11 active adults began its cycling tests 45 minutes after a 3 mg per kg capsule and recorded a peak-power increase of about 4 percent on the first day of ingestion.

    Norum et al., 2020PMID 32681596
    Lara et al., 2019PMID 30673725
    Promising
  • Caffeine Anhydrousheld for about 15 to 18 days of daily use, then narrowedBuilds with daily use

    One crossover trial mapped the day-to-day time course in 11 healthy active adults taking 3 mg per kg per day for 20 consecutive days. Peak cycling power in the incremental test stayed about 4.0 percent above placebo for the first 15 days and the difference then lessened. Wingate peak power was still raised on days 1, 4, 15 and 18 by about 4.9 percent. The authors describe the shrinking margin as progressive tolerance. This is one trial with 11 participants.

    Lara et al., 2019PMID 30673725
    Early
  • L-Theaninewithin about 45 to 50 minutes of a single doseMeasured within a day

    Two double-blind placebo-controlled crossover trials measured attention at a fixed interval after one oral dose. In 24 overnight sleep-deprived adults aged 20 to 25, a 200 mg dose tested 45 minutes post-dose reduced false alarms on a traffic-scene recognition task and raised target-distractor discriminability. In 27 healthy young adults tested 50 minutes post-dose, 400 mg shortened the parietal P3b event-related potential latency against placebo, with no significant change at 100 or 200 mg. Both trials measured task and electrophysiological markers, not a subjective feeling.

    Promising

Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.

General timing

How each ingredient usually behaves over time.

9 ingredients, from each one's own page.

3 more
  • Caffeine AnhydrousAbout five minutes

    Fifteen to forty five minutes for most people, peaking around the hour. How long it lasts depends on liver enzyme activity and varies several fold between people.

    Its own page, the plain answer on timing

  • L-TheanineThirty to sixty minutes

    For most people, with blood levels peaking inside the first hour. Nothing accumulates, so each dose stands on its own.

    Its own page, the plain answer on timing

  • Alpha-GPCWithin one to two hours

    Focus effects land within one to two hours of a dose. The power output work measured on that same acute timescale, so this is a same-day ingredient rather than a slow build.

    Its own page, the plain answer on timing

How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.

Chemical form

The same ingredient, carried differently.

What each form is, and where it fits in a formula. Measured findings carry the study that reported them.

  • Citrulline malate

    L-citrulline combined with malic acid, sold most often as a 2:1 or 1:1 blend by weight of citrulline to malate. The malate is the salt of the same acid found in tart fruit.

    Fits
    Suits pre-workout and endurance drink formulas, where the tart malic acid folds into a fruit-flavored mix, and it is the form most sports-performance dosing protocols were written around.
    Trade-off
    Part of each labelled gram is malic acid rather than citrulline, so a 2:1 gram delivers less citrulline than the same gram of free-form. The two common ratios (2:1 and 1:1) are not interchangeable on a label.

    In a randomized double-blind placebo-controlled crossover trial, 41 men took a single 8 g dose of citrulline malate before resistance training. Bench-press repetitions to fatigue rose across the later sets and reported muscle soreness at 24 and 48 hours was lower than placebo.

  • Beta-alanine

    The free beta amino acid, freely water soluble, supplied as a crystalline powder

    Fits
    Divided daily doses spread through the day, and anyone who wants to control the amount per serving exactly
    Trade-off
    A single larger dose commonly produces transient skin tingling, which is why the total is usually split
  • Betaine anhydrous

    Trimethylglycine, the amino acid glycine carrying three methyl groups on its nitrogen, supplied as a dry zwitterion with no bound water and no counter-ion.

    Fits
    Dissolves readily in water and blends into powders and pre-workout formulas at gram-scale doses, and it carries a high betaine content per gram because there is no bound water or acid weighing the compound down.
    Trade-off
    It is strongly hygroscopic, so it pulls in moisture and can clump or cake in humid conditions, which complicates tableting and storage, and it has a sweet-then-bitter taste that flavored products have to mask.

    In a double-blind randomised controlled trial, 23 untrained young women who took 2.5 g/day betaine anhydrous during 8 weeks of resistance training showed a greater reduction in fat mass and body fat percentage than a placebo group.

  • Caffeine anhydrous

    Dry crystalline free base with no water of crystallisation, close to a hundred percent caffeine by weight

    Fits
    Capsules, tablets and pre-workout powders where an exact milligram figure is needed
    Trade-off
    Potency by volume makes it unforgiving to measure by spoon and it dissolves slowly in cold water. The same potency is what makes accurate dosing possible on a scale
  • L-theanine

    The single L-enantiomer as a free amino acid, the form found in tea leaf and the form used in essentially all human trials.

    Fits
    Anyone matching what the trial literature actually tested, and anyone formulating with caffeine.
    Trade-off
    Hygroscopic powder with a faint umami taste that can come through in unflavoured drink mixes.

Descriptions of the form itself, read from the cited studies. Not a comparison between products and not a statement about any individual.

Format

Powder

It is a powder, so the serving scales to the amount you want and mixes into something you already drink.

Best forGram-scale actives: creatine, collagen, protein, electrolytes, beta-alanine.
From the same shelf

Studied alongside this brand's other formulas

Where two of this brand's products carry actives the literature has read together, the pairing and its basis are below. The evidence word is the corpus row's own confidence, never a score.

Legion Pulse Pre-Workout + Whey+ Protein IsolateEstablished

Caffeine modestly raises the amount of calcium passed in urine and slightly lowers how much the gut takes up, so keeping calcium intake adequate helps hold normal calcium balance. The effect per serving is small and easily offset by sufficient intake.

Established mineral pharmacology. No combination trial has tested this exact pairing.

Questions shoppers ask

Is Legion Pulse Pre-Workout independently verified?
Yes. IngredientMD reviewed this formula independently and verified it in Oct 2026. The verdict is earned, not bought: brands can't edit or purchase it.
What's in Legion Pulse Pre-Workout?
Legion Pulse Pre-Workout is built on Calcium, Sodium, Potassium, L-Citrulline DL-Malate, Beta-Alanine, Betaine Anhydrous, and more. Each ingredient links to its own evidence page on IngredientMD.
Were ingredient interactions checked?
Yes. The combination was screened against 2,354 documented interactions for these actives in IngredientMD's interaction database.
Who is IngredientMD?
IngredientMD is an independent supplement-science platform. We analyze ingredients and formulas against clinical research, and we verify products only when they clear our bar. Labs run the tests. We review the results.
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This record is not medical advice. Always consult your healthcare provider before starting any supplement regimen.

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