BioStacks
Best for
Ingredients (10)
Tyrosine
100%Dose
500 mg
Target
500–2000 mg
Form
—
Selenium
100%Dose
100 mcg
Target
100–200 mcg
Form
Premium
Vitamin B12
40%Dose
100 mcg
Target
250–5000 mcg
Form
Premium
Vitamin A
100%Dose
3000 mcg RAE
Target
700–1500 mcg
Form
Budget
Vitamin C
100%Dose
250 mg
Target
40–200 mg
Form
Budget
Other Ingredients (3)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
Vegetable StearateLubricant
A plant-derived salt of stearic acid (typically magnesium or calcium) used as a tablet lubricant
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Best taken in the morning
The Tyrosine 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
Tyrosine does better on an empty stomach, but something else in this bottle needs food. Taking the whole product with a meal is the better trade — an upset stomach is why most people stop.
Keep it away from protein-heavy meals
Space it a couple of hours from Iron and Calcium
On the label
Take 2 capsules daily, preferably with a meal, as a dietary supplement, or as directed by a health practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$33.40
Near the median of 292 immune 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. 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.