BioStacks
Best for
Ingredients (4)
Black Elderberry
100%Dose
600 mg
Target
300–600 mg
Form
—
Phosphorus
100%Dose
170 mg
Target
100–500 mg
Form
Budget
Calcium
100%Dose
210 mg
Target
200–600 mg
Form
Budget
Vitamin C
80%Dose
200 mg
Target
250–2000 mg
Form
Budget
Other Ingredients (3)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
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
Take it anytime
Take with food and split doses above 500 mg — absorption drops at higher single doses.
With food
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron, Magnesium and Zinc
On the label
Take 2 capsules daily, or as recommended by a healthcare practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$27.00
Pricier than 87% of 68 elderberry supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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.