BioStacks
Best for
Ingredients (10)
Vitamin C
100%Dose
1000 mg
Target
250–2000 mg
Form
Standard
L-Lysine
100%Dose
1100 mg
Target
1000–3000 mg
Form
Premium
L-Proline
100%Dose
1100 mg
Target
500–2000 mg
Form
—
Grape Seed Extract
67%Dose
100 mg
Target
150–600 mg
Form
—
Hawthorn Berry Extract
63%Dose
100 mg
Target
160–900 mg
Form
—
Other Ingredients (5)
SorbitolSweetener
A FODMAP sugar alcohol that may trigger GI discomfort (bloating, gas) in individuals with IBS or sorbitol malabsorption, even at small amounts found in supplements. Avoided in low-FODMAP diets.
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
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
How to Take It
Take it anytime
Fiber is easier on the stomach taken with food.
With food
Lysine does better on an empty stomach, but something else in this bottle needs food. Taking the whole product with a meal is the better trade — an upset stomach is why most people stop.
Keep it away from medication and mineral supplements
On the label
Take 2 to 4 tablets daily with meals.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$17.14
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.