BioStacks
Best for
Ingredients (2)
Zinc
100%Dose
25 mg
Target
15–30 mg
Form
Budget
Quercetin
40%Dose
200 mg
Target
500–1000 mg
Form
—
Other Ingredients (7)
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.
Potassium SorbatePreservative
Natural preservative derived from sorbic acid
Citric AcidAcidulant
Natural acid derived from citrus fruits
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
Stevia ExtractSweetener
Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
Xanthan GumThickener
Natural thickener from fermented carbohydrates
How to Take It
Take it anytime
What's in this absorbs poorly without a fat-containing meal — take it with one.
With a meal containing fat
Space it a couple of hours from Iron and Calcium
On the label
Take 1 tbsp daily with food or at mealtime. Mix with water, your favorite beverage, or take straight.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$14.20
Near the median of 219 zinc 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.