BioStacks
Best for
Ingredients (5)
Lutein
100%Dose
10 mg
Target
10–20 mg
Form
—
Vitamin A
29%Dose
200 mcg
Target
700–1500 mcg
Form
Budget
Riboflavin
1%Dose
0.2 mg
Target
25–100 mg
Form
Budget
Zinc
10%Dose
1.5 mg
Target
15–30 mg
Form
Not listed
Bilberry Extract
19%Dose
15 mg
Target
80–500 mg
Form
—
Other Ingredients (3)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Best taken in the morning
The Vitamin B2 in it is what pulls this toward the morning. Take it with a meal containing fat — the vitamin A in it absorbs poorly without one.
With a meal containing fat
Space it a couple of hours from Iron and Calcium
On the label
Take 1 tablet daily.
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.