Is Legion Pulse underdosed?

• Calcium (Calcium Silicate) [and naturally occurring]Per scoop 14 mgStudies Not setNot gradedEvidence: Not graded

  Not graded: a vitamin or mineral. We grade a pre-workout’s ingredients against exercise studies; vitamins and minerals are graded only on their own supplement pages.

• Sodium (Sodium Citrate) [and naturally occurring]Per scoop 200 mgStudies Not setNot gradedEvidence: Not graded

  Not graded: a vitamin or mineral. We grade a pre-workout’s ingredients against exercise studies; vitamins and minerals are graded only on their own supplement pages.

• Potassium (Tripotassium Citrate) [and naturally occurring]Per scoop 220 mgStudies Not setNot gradedEvidence: Not graded

  Not graded: a vitamin or mineral. We grade a pre-workout’s ingredients against exercise studies; vitamins and minerals are graded only on their own supplement pages.

• L-CitrullineLabel: L-Citrulline DL-Malate [2:1]Per scoop 2.67 gStudies 4–5.33 gEffective doseEvidence: Weak

  Contains 5.33 g; studies use 4–5.33 g.

  ASSUMPTION: "2:1" is read as a weight ratio (2 parts L-citrulline to 1 part malic acid), so 2/3 of the stated weight is counted as L-citrulline. Applied only when the label does not state the citrulline amount itself. If 2:1 were a molar ratio the share would be about 72% (2 x 175.19 / (2 x 175.19 + 134.09)); the weight reading gives the lower citrulline figure.

• Beta-AlaninePer scoop 1.8 gStudies 3.2–6.4 g/dayEffective doseEvidence: Strong

  Contains 3.6 g; studies use 3.2–6.4 g/day.

• Betaine AnhydrousPer scoop 1.25 gStudies 2.5 g/dayEffective doseEvidence: Moderate

  Contains 2.5 g; studies use 2.5 g/day.

• CaffeineLabel: Caffeine AnhydrousPer scoop 175 mgStudies 3–6 mg/kgEffective doseEvidence: Strong

  Contains 350 mg (4.7 mg/kg at 75 kg); studies use 3–6 mg/kg.

• L-TheaninePer scoop 175 mgStudies 100–200 mgEffective doseEvidence: Weak

  Contains 350 mg; studies use 100–200 mg.

• Alpha-GPCLabel: Alpha-Glycerylphosphorylcholine [50%]Per scoop 75 mgStudies 250–600 mg/dayBelow research doseEvidence: Weak

  Contains 150 mg; studies use 250–600 mg/day. Trials gave it daily, for weeks.

Use “Check it for your dose” to see this table for your own scoops and bodyweight. Only caffeine is dosed per kilogram in the studies we cite; the other research doses are fixed amounts, so your weight doesn't change them.

How many scoops would it take?

To reach the low end of the research dose for each underdosed ingredient.

Taking more doesn't fix this product. Reaching those doses means more than 400 mg of caffeine from the scoops alone, above the FDA's 400 mg daily reference for most adults, before any coffee.

Where the reference doses come from

1. Alpha-GPC, 250–600 mg/day: Bellar et al., 2015Marcus et al., 2017.
2. Beta-Alanine, 3.2–6.4 g/day: Harris et al., 2006Hobson et al., 2012Trexler et al., 2015.
3. Betaine Anhydrous, 2.5 g/day: Cholewa et al., 2013Hoffman et al., 2009Zawieja et al., 2024.
4. Caffeine, 3–6 mg/kg: Guest et al., 2021.
5. L-Citrulline, 4–5.33 g: Gough et al., 2021Vårvik et al., 2021.
6. L-Theanine, 100–200 mg: Owen et al., 2008Payne et al., 2025.
7. Daily caffeine reference, 400 mg: US FDA, Spilling the Beans.
8. Label data: National Institutes of Health, Office of Dietary Supplements. Dietary Supplement Label Database, 2026. https://dsld.od.nih.gov/. Label 303533.

Assumptions used on this page: ASSUMPTION: "2:1" is read as a weight ratio (2 parts L-citrulline to 1 part malic acid), so 2/3 of the stated weight is counted as L-citrulline. Applied only when the label does not state the citrulline amount itself. If 2:1 were a molar ratio the share would be about 72% (2 x 175.19 / (2 x 175.19 + 134.09)); the weight reading gives the lower citrulline figure.

Methodology 1.11. Read the full methodology or the corrections log.