BioStacks
GNC

Pro Performance Pre-Workout (Tropical Fruit Punch)

1 Scoop (11.3g) · 30 servings · $0.83/serving

53 / 100Average

Score Breakdown

Formulation
69
Safety
75
Final score
53/100

Ingredients (10)

CaffeineSynergy160 mg

Within effective range

L-TheanineSynergy200 mg

Optimal dose

Magnesium105 mg

Within effective range

Betaine Anhydrous2500 mg

Within effective range

L-Citrulline3000 mg

Within effective range

Other Ingredients

Fillers, coatings, and additives

4Safe1Avoid

SucraloseSweetener

Avoid

Natural FlavorsFlavor

Safe

Silicon DioxideAnti-caking

Safe

Calcium SilicateAnti-caking

Safe

Citric AcidAcidulant

Safe

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.