Check a label

PEScience · Pre-workout · Sold as stim-free

Is PEScience High Volume underdosed?

2 scoops = 14 g36 scoopsLabel as of 22 Nov 2024 · NIH DSLD
Verdict

Effective dose on its 1 key ingredient.

2 ingredients sit in an undisclosed blend.

Effective dose
1
Below research dose
1
Hidden in a blend
2
Too much
0

Ingredient by ingredient

Per scoop · bodyweight 75 kg (default)
  • Vitamin CPer scoop 125 mgStudies Not setNot gradedNot graded

    Contains 250 mg. 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-CitrullinePer scoop 2 gStudies 4–5.33 gEffective doseWeak

    Contains 4 g; studies use 4–5.33 g.

  • TaurinePer scoop In a blendStudies 1–6 gHidden in a blendModerate

    Amount not disclosed. As the 1st of 3 ingredients in the 3.75 g Performance Pump Matrix, it contains 1250–3750 mg. Studies use 1–6 g.

  • GlycerolLabel: Hydromax (Glycerol) [65% Glycerol]Per scoop In a blendStudies Not setHidden in a blendNot graded

    Amount not disclosed. As the 2nd of 3 ingredients in the 3.75 g Performance Pump Matrix, it contains ≤1875 mg.

  • Ferula asafoetida Root Extract (Ferulic Acid) [95% Ferulic Acid]Per scoop In a blendStudies Not setNot gradedNot graded

    Not graded: we have no research dose for it from exercise studies.

  • L-ArginineLabel: NO3-T (Arginine Nitrate)Per scoop 734 mgStudies 0.15 g/kgBelow research doseWeak

    Contains 1.47 g (19.6 mg/kg at 75 kg); studies use 0.15 g/kg.

    ASSUMPTION: arginine nitrate (1:1) is counted as the L-arginine in it: 174.20 ÷ 237.21 g/mol = 73.4% of the printed weight. Used only when the label does not state the arginine itself.

  • Agmatine SulfatePer scoop 500 mgStudies Not setNot gradedNot graded

    Contains 1 g. Not graded: no human study has tested it for exercise; human studies are for nerve pain.

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.

Performance Pump Matrix
Proprietary blend · 3 ingredients · amounts not disclosed
3.75 g total

US labels must list blend ingredients heaviest first (21 CFR 101.36). So the 1st is at least 1/3 of the blend, the 2nd can be at most half, the 3rd at most a third.

  • Taurine · 1st1250–3750 mg
  • Glycerol · 2nd≤1875 mg

Where the reference doses come from

  1. L-Arginine, 0.15 g/kg: Viribay et al., 2020.
  2. L-Citrulline, 4–5.33 g: Gough et al., 2021Vårvik et al., 2021.
  3. Taurine, 1–6 g: Deng et al., 2025Waldron et al., 2018.
  4. Vitamin C, 200–1000 mg/day: Frei et al., 2012Gonzalez et al., 2026Levine et al., 1996.
  5. Daily caffeine reference, 400 mg: US FDA, Spilling the Beans.
  6. Blend order rule: 21 CFR 101.36.
  7. Label data: National Institutes of Health, Office of Dietary Supplements. Dietary Supplement Label Database, 2026. https://dsld.od.nih.gov/. Label 318594.

Assumptions used on this page: ASSUMPTION: arginine nitrate (1:1) is counted as the L-arginine in it: 174.20 ÷ 237.21 g/mol = 73.4% of the printed weight. Used only when the label does not state the arginine itself.

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