BioStacks
Best for
Ingredients (3)
Vitamin D3
100%Dose
5000 IU
Target
1000–5000 IU
Form
Premium
Vitamin K2
100%Dose
500 mcg
Target
90–200 mcg
Form
Premium
Vitamin A
100%Dose
1500 mcg RAE
Target
700–1500 mcg
Form
Standard
Other Ingredients (8)
Natural FlavorsFlavor
Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.
Oleic Acid PolyglycerideEmulsifier
A polyglycerol ester of oleic acid used as a non-ionic emulsifier
Rosmarinic AcidFood
A polyphenolic antioxidant compound found in rosemary and other Lamiaceae herbs.
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
PotassiumMineral
Essential mineral naturally present in many plant-based supplement ingredients
Sunflower LecithinEmulsifier
Non-GMO, non-allergenic emulsifier derived from sunflower seeds
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
Xanthan GumThickener
Natural thickener from fermented carbohydrates
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
On the label
As a dietary supplement, take 1 ml daily, or use as directed by your healthcare practitioner. Shake vigorously before each use.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$71.38
Pricier than 99% of 79 vitamin A 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. studied 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.