This capsule delivers **Vitamin D3** at 5,000 IU as cholecalciferol — the same form your skin makes from sunlight and the most effective form for raising blood levels. At 5,000 IU you're at the top of the clinically supported range (1,000–5,000 IU), well above the conservative 600 IU RDA. D3 is essential for calcium absorption, immune regulation, and bone maintenance. It also includes **Vitamin K2** as MK-7, the long-acting form that stays active in your body for roughly 96 hours, directing calcium into your bones and away from your arteries.
The D3 and K2 pairing is a well-established synergy: D3 pulls more calcium from your gut, and K2 ensures that calcium ends up in your skeleton. However, the K2 dose here is 50 mcg — below the 100–200 mcg range used in most studies. You're getting high-quality MK-7, but at roughly half the researched dose.
Because D3 is fat-soluble, taking this with a meal that includes some fat will improve your absorption. The 5,000 IU dose exceeds the official upper limit (4,000 IU), though it's common for people with low levels. If you haven't had your vitamin D blood level tested, checking before committing to this dose is worth considering.
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Ingredients (4)
Vitamin D3
100%Dose
5000 IU
Target
1000–5000 IU
Form
Premium
Phosphorus
85%Dose
85 mg
Target
100–500 mg
Form
Budget
Vitamin K2
56%Dose
50 mcg
Target
90–200 mcg
Form
Premium
Calcium
110 mgTrace amount — not scored
Other Ingredients (6)
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.
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
StarchBinder
Carbohydrate polymer used as a binder, filler, and disintegrant in tablets and capsules
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in 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.