BioStacks
Best for
Ingredients (4)
Spirulina
100%Dose
3000 mg
Target
1000–3000 mg
Form
—
Vitamin A
39%Dose
270 mcg RAE
Target
700–1500 mcg
Form
Budget
Vitamin K2
16%Dose
14 mcg
Target
90–200 mcg
Form
Standard
Iron
1 mgTrace amount — not scored
Other Ingredients (3)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Spirulina Extract (Color)Colorant
Natural blue colorant derived from the cyanobacterium Arthrospira platensis (spirulina); the pigment is phycocyanin
Vegetable StearateLubricant
A plant-derived salt of stearic acid (typically magnesium or calcium) used as a tablet lubricant
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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.