BioStacks
Best for
Ingredients (6)
Cranberry fruit extract
100%Dose
500 mg
Target
500–1500 mg
Form
—
Vitamin C
40%Dose
100 mg
Target
250–2000 mg
Form
Budget
Pumpkin seed extract
47%Dose
150 mg
Target
320–1000 mg
Form
—
Hibiscus flower powder
40%Dose
100 mg
Target
250–1500 mg
Form
—
D-Mannose
50%Dose
500 mg
Target
1000–2000 mg
Form
—
Other Ingredients (3)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
HypromelloseCapsule
Plant-derived capsule material from cellulose
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Take it anytime
Studied as a twice-daily dose — its effect on bacterial adhesion is short-lived, so one big dose isn't equivalent.
With or without food
On the label
As a dietary supplement, take two capsules once daily, preferably with a full glass of water (8-12 fl oz) or as directed by a healthcare practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$21.56
Near the median of 544 vitamin C 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.