BioStacks
Doctor's Best
Sustained Release Vitamin C with PureWay-C 500 mg
1 Tablet · 60 servings · $0.14/serving
Best for
Ingredients (2)
Vitamin C
100%Dose
500 mg
Target
250–2000 mg
Form
Premium
Citrus Bioflavonoids Complex
20%Dose
50 mg
Target
250–1000 mg
Form
—
Other Ingredients (4)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
How to Take It
Take it anytime
Water-soluble — timing doesn't matter. Split doses above ~500 mg if you want to absorb more of it.
With or without food
On the label
For continuous 24 hour Vitamin C coverage take one tablet every 12 hours. Store in a cool dry place.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$8.19
Cheaper than 94% of 375 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.