Is Bare Performance Nutrition Flight underdosed?

• Vitamin CLabel: Vitamin C (Ascorbic Acid)Per scoop 500 mgStudies Not setNot gradedEvidence: Not graded

  Contains 500 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.

• Beta-AlanineLabel: CarnoSyn (Beta-Alanine)Per scoop 3.2 gStudies 3.2–6.4 g/dayEffective doseEvidence: Strong

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

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

  Contains 2.5 g; studies use 2.5 g/day.

• L-CitrullinePer scoop 2 gStudies 4–5.33 gBelow research doseEvidence: Weak

  Contains 2 g; studies use 4–5.33 g.

• N-Acetyl-L-TyrosinePer scoop 1.5 gStudies Not setNot gradedEvidence: Not graded

  Contains 1.5 g. Not graded: a form of L-tyrosine, which isn't graded either (see the L-tyrosine guide).

• TaurineLabel: L-TaurinePer scoop 1 gStudies 1–6 gEffective doseEvidence: Moderate

  Contains 1 g; studies use 1–6 g.

• CaffeineLabel: Caffeine Anhydrous; Infinergy (Dicaffeine Malate)Per scoop 300 mgStudies 3–6 mg/kgEffective doseEvidence: Strong

  Contains 300 mg (4 mg/kg at 75 kg); studies use 3–6 mg/kg.

• Club Moss Extract (Huperzia serrata Extract) [std. min. 1% Huperzine A]Per scoop 5 mgStudies Not setNot gradedEvidence: Not graded

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

• BioPerine (black pepper extract)Label: BioPerine (Piper nigrum Extract) [std. to 95% Piperine]Per scoop 5 mgStudies Not setNot gradedEvidence: Not graded

  Contains 5 mg. Not graded: added to help the body absorb other ingredients; it has no dose of its own to judge.

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. Beta-Alanine, 3.2–6.4 g/day: Harris et al., 2006Hobson et al., 2012Trexler et al., 2015.
2. Betaine Anhydrous, 2.5 g/day: Cholewa et al., 2013Hoffman et al., 2009Zawieja et al., 2024.
3. Caffeine, 3–6 mg/kg: Guest et al., 2021.
4. L-Citrulline, 4–5.33 g: Gough et al., 2021Vårvik et al., 2021.
5. Taurine, 1–6 g: Deng et al., 2025Waldron et al., 2018.
6. Vitamin C, 200–1000 mg/day: Frei et al., 2012Gonzalez et al., 2026Levine et al., 1996.
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 305219.

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