BioStacks
Best for
Ingredients (4)
Natural Caffeine
75%Dose
75 mg
Target
100–400 mg
Form
—
Guarana Seed Extract
100%Dose
53 mg
Target
50–500 mg
Form
—
Gotu Kola Extract
20%Dose
50 mg
Target
250–750 mg
Form
—
Yerba Mate Powder
25%Dose
250 mg
Target
1000–3000 mg
Form
—
Other Ingredients (4)
Rice ExtractFiller
Rice-based ingredients carry risk of inorganic arsenic contamination. Vague labeling — 'rice extract' does not specify what is extracted or standardized. Used as a cheap filler with no supplemental benefit.
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
HypromelloseCapsule
Plant-derived capsule material from cellulose
Gum AcaciaBinder
Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements
How to Take It
Best taken in the morning
Morning or early afternoon only — caffeine within 8 hours of bed measurably disrupts sleep.
With or without food
On the label
Take 1 capsule daily.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$12.95
Cheaper than 84% of 239 energy supplements
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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.