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Comparison · Dated labels

Legion Athletics Pulse vs Transparent Labs Bulk Black Pre-Workout

By the FormulaSignal Record Figures observed through Published 3,185 dated product states since 2017 No paid placement

THE SHORT ANSWER

It depends on what you want from the label.

  • Less caffeineTransparent Labs Bulk Black
  • Lower cost per servingTransparent Labs Bulk Black
  • More actives at researched dosesTransparent Labs Bulk Black
The full answer, in words

Less caffeine: Transparent Labs Bulk Black. Lower cost per serving: Transparent Labs Bulk Black. More actives at researched doses: Transparent Labs Bulk Black. Legion Athletics Pulse declares 350 mg of caffeine per serving and Transparent Labs Bulk Black Pre-Workout declares 325 mg, on labels both observed August 3, 2026. At the prices FormulaSignal observed, Legion Athletics Pulse costs $2.50 a serving and Transparent Labs Bulk Black Pre-Workout $1.83. They share 3 declared active ingredients; Legion Athletics Pulse lists 2 the other does not, and Transparent Labs Bulk Black Pre-Workout lists 9.

Every figure here is read from the FormulaSignal Record, from each brand's own product page, with the date it was observed. No winner is declared and no product is scored.

Save Legion Pulse to my LockerSave Transparent Labs Bulk Black

At a glance

Two labels, five facts.

Legion Athletics Pulse, front of packageLEGION ATHLETICSLegion Athletics PulseTransparent Labs Bulk Black Pre-Workout, front of packageTRANSPARENT LABSTransparent Labs Bulk Black Pre-Workout
Caffeine per serving
350 mg
325 mg
Price per servingLower costs less
$2.50
$1.83
Main actives at researched doses
2 of 3
3 of 3
Servings per container
20
30
Confirmed formula changes
1
0
Labels dated August 3, 2026 and August 3, 2026. A longer bar is a larger number, not a better product.Alternatives to Legion Athletics Pulse

Which fits you

Choose by what you care about.

Each line is a measured difference between the two labels, not a verdict. Nothing here says either product works, or is safe for you.

  • You want less caffeine per serving: Transparent Labs Bulk Black Pre-Workout

    325 mg against 350 mg declared per serving. Less is not safer and more is not better; how much suits you is a question for a clinician.

  • Cost per serving matters most: Transparent Labs Bulk Black Pre-Workout

    $1.83 against $2.50 a serving at the prices FormulaSignal observed (Aug 3, 2026 and Jul 25, 2026). Not every price here is established as a list price.

  • You want more of the main actives at researched doses: Transparent Labs Bulk Black Pre-Workout

    3 of 3 main actives on Transparent Labs Bulk Black Pre-Workout sit inside the dose range the cited research used, against 2 of 3 on Legion Athletics Pulse. A comparison of numbers, not of how well either works.

Side by side

Legion Pulse and Transparent Labs Bulk Black, line by line.

The same fields the FormulaSignal API and MCP server return for this pair.

FieldLegion PulseTransparent Labs Bulk Black
Caffeine per serving
The Record's total across every declared caffeine source. Neither direction is better.		350 mg325 mg
Price per serving
Observed package price divided by the stated serving count. The basis of each price is on the product's Record.		$2.50$1.83
Monthly cost at five uses a week$54.16$39.65
Servings per container2030
Ingredients with a disclosed amount
A proprietary blend total counts as one amount, and the split inside it stays undisclosed.		9 of 916 of 16
Main actives inside researched doses
Declared amounts measured against the range the cited research used. Not a measure of effectiveness.		2 of 33 of 3
Documented cautionsStimulant-load gate, Alpha-GPC 50% materialStimulant-load gate, Alpha-GPC 50% material
Regulatory records
A filing exists. It is not a finding about safety.		None on fileNone on file
Confirmed formula changes
Zero means none confirmed, not that the formula never changed.		10
Label observedAugust 3, 2026August 3, 2026

Ingredient by ingredient

What both declare, and what only one does.

Matched by FormulaSignal's normalized identity, so two brand names for the same compound line up and two forms of one ingredient do not. Vitamins, minerals and electrolytes are left out; caffeine is compared as a total above.

239
Declared by bothLegion PulseTransparent Labs Bulk Black
Beta-alanine3.6 g4000 mg
L-theanine350 mg200 mg
Alpha-GPC 50% material300 mg300 mg

Only on Legion Athletics Pulse

  • L-Citrulline DL-Malate 2:1: 8 g
  • Betaine anhydrous: 2.5 g

Only on Transparent Labs Bulk Black Pre-Workout

  • Zinc (as Zinc Chelate): 10 mg
  • Potassium (as Potassium Citrate): 130 mg
  • Citrulline malate: 8000 mg
  • Betaine Anhydrous (BetaPure): 2500 mg
  • L-tyrosine: 2000 mg
  • Senactiv Tienchi Ginseng (Panax notoginseng) (Root) Extract & Chestnut Rose (Rosa roxburghii) (Fruit) Extract: 50 mg
  • Bioperine (Black Pepper Extract) (Piper nigrum) (fruit): 5 mg
  • Boron (from Boron Citrate): 3 mg
  • Huperzine A (Huperzia serrata) (leaf): 200 mcg

Which label?

Which label is a number from?

A figure without a date may describe a label that is no longer sold.

Confirmed change · Legion Athletics PulseBeta-alanine4.8 g3.6 gLabels observed November 19, 2017 and January 30, 2021 · 3 lines movedSee the change and both sources

A comparison written from the earlier label is describing a different formula.

Method

How this page was made.

What FormulaSignal did

  • Read Legion Athletics Pulse's label as Legion Athletics published it, observed August 3, 2026.
  • Read Transparent Labs Bulk Black Pre-Workout's label as Transparent Labs published it, observed August 3, 2026.
  • Matched 14 declared active ingredients by normalized identity, so two brand names for one compound line up.
  • Checked each main active's declared dose against the range the cited research used: 2 of 3 on Legion Athletics Pulse; 3 of 3 on Transparent Labs Bulk Black Pre-Workout.
  • Looked for confirmed formula changes on either product: 1 on file, each reviewed against two dated sources.

What it did not do

  • No taste test and no lab test. Every figure is what a label or a brand's own page declares, not what was measured in a tub.
  • No score and no winner. Differences are measured and shown; nothing is rated.
  • No payment and no preview. No brand paid to appear, and none saw this page before it was published.
  • No health advice. Whether an ingredient or an amount suits you is a question for a clinician.

Evidence

Open the sources behind every figure.

Each product's Record lists every capture, with both its observation and access dates.

  • Legion Athletics Pulse: label

    Legion Athletics · P1 · observed August 3, 2026

    Open the source

  • Legion Athletics Pulse: price

    Legion Athletics · the price shown · observed July 25, 2026

    Open the source

  • Transparent Labs Bulk Black Pre-Workout: label

    Transparent Labs · P1 · observed August 3, 2026

    Open the source

  • Transparent Labs Bulk Black Pre-Workout: price

    Transparent Labs · the price shown · observed August 3, 2026

    Open the source

Where to buy

Decided? Check the label on what you buy.

As an Amazon Associate FormulaSignal earns from qualifying purchases. The link goes to the Amazon listing for this product. It is not a recommendation, and it cannot change anything the Record says or how anything is ordered. Choose the flavor and size on the seller’s page; this link does not establish the price or package shown in the Record. A listing can show an older label, so compare its label photo before you buy.

Questions

Legion Pulse vs Transparent Labs Bulk Black: common questions

Which is better, Legion Pulse or Transparent Labs Bulk Black?

It depends on what you want from the label. Less caffeine: Transparent Labs Bulk Black. Lower cost per serving: Transparent Labs Bulk Black. More actives at researched doses: Transparent Labs Bulk Black. FormulaSignal names no winner: each line is a measured difference between the two dated labels, and what suits you is yours to weigh, with a clinician for anything about your health.

Which has more caffeine, Legion Pulse or Transparent Labs Bulk Black?

Legion Athletics Pulse declares 350 mg per serving and Transparent Labs Bulk Black Pre-Workout 325 mg, on the labels observed August 3, 2026 and August 3, 2026. More caffeine is not better; what suits you is a question for a clinician.

Is Legion Pulse stronger than Transparent Labs Bulk Black?

If “stronger” means caffeine, Legion Athletics Pulse declares more (350 mg against 325 mg). FormulaSignal does not rate how strong a product feels; that is an experience question the labels cannot answer.

Which is cheaper per serving?

Transparent Labs Bulk Black Pre-Workout, at $1.83 a serving at the price shown on Aug 3, 2026, against Legion Athletics Pulse at $2.50 a serving at the price shown on Jul 25, 2026.

Do Legion Pulse and Transparent Labs Bulk Black contain creatine?

Legion Athletics Pulse: none declared on its complete label. Transparent Labs Bulk Black Pre-Workout: none declared on its complete label.

Do they contain beta-alanine?

Legion Athletics Pulse: CarnoSyn Beta-Alanine (3.6 g). Transparent Labs Bulk Black Pre-Workout: Beta Alanine (4000 mg).

Has either formula changed?

Legion Athletics Pulse's label changed between the states FormulaSignal observed on November 19, 2017 and January 30, 2021: Sodium 124 mg to 230 mg; Beta-alanine 4.8 g to 3.6 g; Potassium 277 mg to 345 mg. A comparison written from the earlier label is describing a different formula.

Keep comparing

Lists that include both

Every comparison · Pre-workout lists · What the Record covers

Considering both?

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