BioStacks
Best for
Ingredients (4)
Vitamin D3
100%Dose
2000 IU
Target
1000–5000 IU
Form
Premium
Selenium
100%Dose
200 mcg
Target
100–200 mcg
Form
Premium
Olive Leaf Extract
100%Dose
1000 mg
Target
150–500 mg
Form
—
Nigellin Black Cumin Seed Extract
100%Dose
360 mg
Target
200–2000 mg
Form
—
Other Ingredients (5)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Vegetable OilCarrier
Edible oils used as carriers in softgels and as processing aids
How to Take It
Take it anytime
Fat-soluble — take with your largest fat-containing meal. Time of day doesn't matter.
With a meal containing fat
On the label
As a dietary supplement, take 3 capsules daily, or as directed by a healthcare practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$57.99
Pricier than 95% of 79 selenium supplements
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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.