BioStacks
One A Day

Multi+ Complete Multivitamin Hair, Skin & Nails Support

2 Gummies · 60 servings · $0.27/serving

13 / 100Very Poor

Score Breakdown

Formulation
53
Safety
24
Final score
13/100

Ingredients (13)

Biotin

100%

Dose

1000 mcg

Target

1000–5000 mcg

Form

Vitamin D

80%

Dose

800 IU

Target

1000–5000 IU

Form

Premium

Vitamin A

100%

Dose

750 mcg RAE

Target

700–1500 mcg

Form

Standard

Vitamin B6

8%

Dose

2 mg

Target

25–100 mg

Form

Premium

Vitamin C

100%

Dose

30 mg

Target

25–200 mg

Form

Budget

Other Ingredients (13)

Artificial ColorsColorant

May trigger hyperactivity in sensitive children; potential link to allergic reactions

FD&C Red No. 40 LakeColorant

Same petroleum-derived azo dye as Red 40, linked to hyperactivity in children (Southampton study) and carrying an EU warning label; pure cosmetic color with zero benefit.

FD&C Yellow No. 6Colorant

May trigger sensitivity in some individuals; behavioral concerns in susceptible children

Glucose SyrupSweetener

High glycemic load; source typically corn (generally gluten-free)

MaltodextrinBinder

Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.

SucroseSweetener

Added sugars and high glycemic load; dental caries risk

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.

Carnauba WaxCoating

Hard plant wax from the carnauba palm used to glaze gummies and tablets

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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.