BioStacks
Best for
Ingredients (5)
Vitamin D
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Vitamin C
24%Dose
60 mg
Target
250–2000 mg
Form
Standard
Livaux Gold Kiwifruit Powder
100%Dose
600 mg
Target
600–2400 mg
Form
—
Digesten Kiwifruit Complex
83%Dose
500 mg
Target
600–2400 mg
Form
—
L-Glutamine
6%Dose
300 mg
Target
5000–15000 mg
Form
—
Other Ingredients (8)
Rice ExtractFiller
Rice-based ingredients carry risk of inorganic arsenic contamination. Vague labeling — 'rice extract' does not specify what is extracted or standardized. Used as a cheap filler with no supplemental benefit.
Rice HullsAnti-caking
Ground outer husk of rice grains used as a plant-based flow and anti-caking agent
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Gum AcaciaBinder
Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Sunflower Seed OilCarrier
Common vegetable oil from sunflower seeds used as a carrier in softgels for fat-soluble nutrients
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
How to Take It
Take it anytime
Fat-soluble — take with your largest fat-containing meal. Time of day doesn't matter.
With a meal containing fat
Glutamine 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.
On the label
2 capsules taken together or 1 capsule twice daily. Take after a meal.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$42.95
Pricier than 88% 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.