BioStacks
Best for
Ingredients (3)
Berberine Hydrochloride
100%Dose
1000 mg
Target
500–1500 mg
Form
Premium
Zinc
100%Dose
30 mg
Target
15–30 mg
Form
Standard
Vitamin C
48%Dose
120 mg
Target
250–2000 mg
Form
Budget
Other Ingredients (3)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
How to Take It
Take it anytime
Take with meals — its glucose effects act on the food you're eating. Usually split 2–3 times daily.
With food
Space it a couple of hours from Iron and Calcium
On the label
As a dietary supplement, take two (2) capsules daily with food, or as directed by your qualified healthcare professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$19.99
Near the median of 502 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.