BioStacks
Best for
Ingredients (19)
Choline
100%Dose
250 mg
Target
100–500 mg
Form
—
N-Acetyl-L-Carnitine HCl
100%Dose
1000 mg
Target
500–2000 mg
Form
—
Total Caffeine - from all sources
100%Dose
150 mg
Target
100–400 mg
Form
—
Vitamin B6
100%Dose
1.4 mg
Target
1.3–25 mg
Form
—
Green Tea Extract
100%Dose
650 mg
Target
200–500 mg
Form
—
Other Ingredients (9)
SucraloseSweetener
Dose context matters. As a trace excipient in a tablet coating or capsule, the amount is minimal and not a meaningful concern. The evidence below applies to the gram-level intakes typical of sweetened protein powders, pre-workouts, and drink mixes: a 2022 human trial (Suez et al., Cell) showed sucralose disrupts gut bacteria and worsens blood sugar control in healthy adults, and a 2023 study (Schiffman et al.) found that sucralose-6-acetate — a compound formed when sucralose is digested — was genotoxic to human cells in vitro. It remains an artificial sweetener with no nutritional purpose.
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
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.
InulinFiller
Prebiotic soluble fiber from chicory root, used as a filler and flow agent in capsules and tablets
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.
Folic AcidVitamin
Synthetic form of vitamin B9 used for fortification — supports red blood cell formation and neural tube development. Pharmacologically distinct from the natural/active form (5-methyltetrahydrofolate, methylfolate).
Fatty AcidsCarrier
Fatty acids derived from vegetable triglycerides, used as lipid carriers in enhanced-absorption vitamin formulations
How to Take It
Best taken in the morning
Contains Caffeine, which is stimulating — keep it to the morning. Take it with food — the zinc, niacin and choline in it are what makes this kind of product feel nauseating on an empty stomach.
With food
Keep it away from iron-rich meals and protein-heavy meals
Space it a couple of hours from Iron and Calcium
On the label
Mix 11g (approx. 1 scoop) with 400ml of water and consume 30 minutes before your workout. Consume once daily. Powder settles over time, we recommend weighing for the most accurate measure. Warning: Not recommended for children, pregnant or breastfeeding women. Consult with your doctor if taking medication or have a medical condition. Contains caffeine (portion as recommended for daily consumptionmg/150). Not recommended for children or pregnant women.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
£27.49≈ $34.91
Near the median of 798 multivitamins
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.