BioStacks
Best for
Ingredients (5)
Vitamin B6
1%Dose
0.3 mg
Target
25–100 mg
Form
—
Caffeine
30%Dose
30 mg
Target
100–400 mg
Form
—
Niacin
3%Dose
0.8 mg
Target
25–500 mg
Form
—
Taurine
10%Dose
100 mg
Target
1000–3000 mg
Form
—
L-Citrulline
7%Dose
200 mg
Target
3000–6000 mg
Form
—
Other Ingredients (14)
Glucose SyrupSweetener
High glycemic load; source typically corn (generally gluten-free)
SucroseSweetener
Added sugars and high glycemic load; dental caries risk
SorbitolSweetener
A FODMAP sugar alcohol that may trigger GI discomfort (bloating, gas) in individuals with IBS or sorbitol malabsorption, even at small amounts found in supplements. Avoided in low-FODMAP diets.
Beet ColorColorant
Natural red-pink colorant from dehydrated beets or beet juice; the pigment is betanin
Natural FlavorsFlavor
Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.
Natural FlavorsFlavor
Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.
Citric AcidAcidulant
Natural acid derived from citrus fruits
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
How to Take It
Best taken in the morning
Contains Caffeine, which is stimulating — keep it to the morning. Take it with food — the niacin in it is what makes this kind of product feel nauseating on an empty stomach.
With food
General guidance based on the ingredients, not a substitute for the label or your doctor.
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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.