$16.99 $0.28 per serving
Product analysis
Vitamin D3 & K2 supplies nutrients involved in calcium use and normal bone maintenance, particularly when vitamin D intake is low. Their combination does not by itself establish extra bone or heart protection.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality86
Vitamin D3 and clearly identified MK-7 are strengths of the ingredient selection. Calcium carbonate is named, although a firm conclusion about its form quality is unavailable.
Ingredient Transparency100
All ingredient amounts and forms are disclosed. Those details make the serving straightforward to compare with other D and K supplements.
Value For Money62
The MK-7 contribution offers favorable value, while vitamin D offers more moderate value. The calcium contribution has no firm value conclusion.
Customer Satisfaction74
Customer feedback is strongly positive. The relatively small review base provides useful buying context, without establishing bone or heart effects.
Product Focus65
The compact formula has a clear central purpose in bone and mineral nutrition. Its wider heart and longevity uses have more limited or preparation-specific support.
- Format
Capsule - Container
- 60 Capsule(s)
- Per serving
- $0.28
- Customer rating
- 4.8 · 128 ratings
Goals
Impact
High effect
Vitamin D · 2500 IUVitamin K · 90 mcg
Impact
Highest effect
Vitamin K · 90 mcgCalcium · 100 mgVitamin D · 2500 IU
Impact
Moderate effect
Vitamin K · 90 mcgVitamin D · 2500 IU
Impact
Moderate effect
Vitamin K · 90 mcgVitamin D · 2500 IU
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin D3 (Cholecalciferol) | 2500 IU | |
Vitamin K2 (Menaquinone-7) | 90 mcg | |
Calcium (Calcium Carbonate) | 100 mg |
Vitamin K (Menaquinone-7) · 90 mcg OverallScore93
A serving provides 90 mcg of vitamin K at a low cost per serving. It uses vitamin K2 as MK-7. The MK-7 isomer is not specified as trans or all-trans.
How this ingredient is rated
Active Ingredient Quality & Bioavailability82
The vitamin K includes MK-7. Its trans or all-trans isomer is not specified.
Vitamin K Form (MK-7 vs. MK-4 vs. K1)
MK-7 is a form of vitamin K2 that remains in the bloodstream longer than other forms.
MK-7 Isomer Disclosure
The MK-7 isomer is not specified as trans or all-trans.
Dose, Safety & Label Transparency100
The label states 90 mcg of MK-7 per serving.
Vitamin K2 (MK-7) Dosage Efficacy
The serving provides 90 mcg of MK-7.
Form and Subtype Transparency
The amount and MK-7 subtype are stated.
Value100
The cost per serving is low.
Price per Effective MK-7 Serving
The cost per serving is low.
Vitamin D (Cholecalciferol) · 2500 IU OverallScore72
A serving provides 2500 IU of vitamin D per serving at a high cost per 1,000 IU. The vitamin D is cholecalciferol, or D3. Independent certification or batch-specific testing is not documented.
How this ingredient is rated
Active Ingredient Quality & Bioavailability87
The vitamin D is cholecalciferol, or D3. The raw material source is not specified.
Vitamin D3 vs. D2 Superiority
The vitamin D is cholecalciferol, or D3.
Sourcing and Active Marker Disclosure
The raw material source is not specified.
Dose, Safety & Label Transparency68
The serving provides 2500 IU of vitamin D per serving. No qualifying independent certification or batch-specific testing is documented.
Daily Dosage Appropriateness
The serving provides 2500 IU of vitamin D per serving.
Excipient and Additive Purity
Titanium dioxide, artificial colors and hydrogenated oils are not listed.
Purity and Quality Certification
No qualifying independent certification or batch-specific testing is documented.
Value50
The cost per 1,000 IU of vitamin D is high, and vitamin K2 as MK-7 is included.
Price per 1,000 IU Efficiency
The cost per 1,000 IU of vitamin D is high, and vitamin K2 as MK-7 is included.
Alternative products
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- What is the impact of daily oral supplementation of vitamin D3 (cholecalciferol) plus calcium on the incidence of hip fracture in older people? A systematic review and meta-analysis.
- Calcium supplementation prevents seasonal bone loss and changes in biochemical markers of bone turnover in elderly New England women: a randomized placebo-controlled trial.
- The effects of calcium supplementation (milk powder or tablets) and exercise on bone density in postmenopausal women.
- The efficacy of calcium supplementation alone in elderly Thai women over a 2-year period: a randomized controlled trial.
- Calcium-enriched foods and bone mass growth in prepubertal girls: a randomized, double-blind, placebo-controlled trial.
- Pregnancy vitamin D supplementation and offspring bone mineral density in childhood follow-up of a randomized controlled trial.
- Vitamin D analogs and bone: preclinical and clinical studies with eldecalcitol.
- Efficacy of vitamin D fortified foods on bone mineral density and serum bone biomarkers: A systematic review and meta-analysis of interventional studies.
- Cholecalciferol Supplementation Attenuates Bone Loss in Incident Kidney Transplant Recipients: A Prespecified Secondary Endpoint Analysis of a Randomized Controlled Trial.
- Vitamin D supplementation and bone health in post-menopausal women: a 24-month randomized controlled intervention with enhanced bioavailability formulations.
- Vitamin K and the prevention of fractures: systematic review and meta-analysis of randomized controlled trials.
- Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women.
- Effect of combined administration of vitamin D3 and vitamin K2 on bone mineral density of the lumbar spine in postmenopausal women with osteoporosis.
- Efficacy and safety of vitamin K2 for postmenopausal women with osteoporosis at a long-term follow-up: meta-analysis and systematic review.
- Low-dose vitamin K2 (MK-4) supplementation for 12 months improves bone metabolism and prevents forearm bone loss in postmenopausal Japanese women.
- Comparative Efficacy of Nutraceuticals on Endothelial Function: A Systematic Review and Network Meta-Analysis.
- A Randomized Trial of Vitamin D Supplementation on Vascular Function in CKD.
- Randomized, placebo-controlled, double-blind clinical trial on the contributions of vitamin D in the control of cardiovascular risk factors, depressive symptoms and suicide risk.
- Dose responses of vitamin D3 supplementation on arterial stiffness in overweight African Americans with vitamin D deficiency: A placebo controlled randomized trial.
- Paricalcitol and endothelial function in chronic kidney disease trial.