BioStacks
Best for
Ingredients (3)
Vitamin C
100%Dose
450 mg
Target
50–250 mg
Form
Budget
Quercetin Dihydrate
50%Dose
250 mg
Target
500–1000 mg
Form
—
Citrus Bioflavonoid Complex
50%Dose
125 mg
Target
250–1000 mg
Form
—
Other Ingredients (4)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Calcium LaurateEmulsifier
Calcium salt of lauric acid used as a lubricant
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
HypromelloseCapsule
Plant-derived capsule material from cellulose
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
On the label
Adults take 2 capsules one to three times daily,or as recommended by your healthcare professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$40.50
Pricier than 73% of 66 quercetin 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.