Marketed for immune support, this gummy combines three ingredients — but none are dosed at levels with strong clinical backing. **Elderberry Extract** at 100mg is well below the 300-600mg range used in the few RCTs that showed modest cold-duration reduction. **Vitamin C** at 90mg covers your RDA but falls short of the 250-2,000mg supplemental range studied for immune outcomes. **Zinc** at 7.5mg as zinc citrate is about half the minimum clinical dose of 15mg.
The zinc citrate form is a reasonable mid-tier choice for absorption, and elderberry (Sambucus nigra) does have some preliminary evidence for shortening upper respiratory infections. But at these doses, you're getting partial amounts of each ingredient rather than a full clinical dose of any single one.
As a gummy, the format limits how much active ingredient can fit per serving. If immune support is your primary goal, you'd likely need to supplement your zinc and vitamin C intake from other sources to reach the doses that research has actually studied.
BioStacks
Other Ingredients (8)
SucroseSweetener
Added sugars and high glycemic load; dental caries risk
Tapioca SyrupSweetener
High glycemic index similar to glucose syrup. Adds significant sugars and calories — often the primary ingredient by weight in gummy supplements. 'Organic' labeling does not change the glycemic impact.
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.
Citric AcidAcidulant
Natural acid derived from citrus fruits
Carnauba WaxCoating
Hard plant wax from the carnauba palm used to glaze gummies and tablets
PectinGelling Agent
Plant polysaccharide from citrus peels or apple pomace used to gel pectin-based gummies
Sodium CitrateBuffer
Sodium salt of citric acid used for pH control, tartness, and chelation in gummies
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
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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.