Pre-Workout Breezeberry
Backed by 34 studiesOverall grade based on research across 5 ingredients.
47out of 100Grade D
Research evidence score
Weighed against 34 published studies · led by Citrulline
- 'citrulline' claim is contradicted by evidence.
How the ingredients work together
Known interactions from published nutrition research — separate from the evidence grade.
Caffeine + L-TheanineWork together
L-theanine smooths caffeine's stimulant edge; trials show improved attention with fewer jitters versus caffeine alone.
Ingredient breakdown
D
CitrullineImproves blood flow and exercise performance
Research direction: Leans unsupportiveEvidence: 5 studiesDose: 6 GramEvidence strength: Weak - research is split or limited
D
Beta-alanineImproves exercise endurance and reduces fatigue
Research direction: Leans unsupportiveEvidence: 19 studiesDose: 1.6 GramEvidence strength: Weak - research is split or limited
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L-tyrosineSupports protein synthesis and metabolic function
Research direction: No studies foundEvidence: 0 studiesDose: 500 mgEvidence strength: Not enough research yet - no studies found for this specific claim
C
CaffeineImproves alertness and cognitive performance
Research direction: InconclusiveEvidence: 5 studiesDose: 200 mgEvidence strength: Moderate - supportive but mixed
C
L-TheaninePromotes relaxation without drowsiness
Research direction: InconclusiveEvidence: 5 studiesDose: 200 mgEvidence strength: Moderate - supportive but mixed
This summary describes only the ingredients and the research behind them — it is not a judgment of the product or its marketing. Grades reflect the weight of published evidence cross-referenced against 350M+ research papers. How we grade →
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