$19.99 $0.66 per serving
Product analysis
Bone Collagen + D3 & K2 combines nutrients involved in calcium use and bone structure. Its unidentified collagen preparation makes the expected added benefit harder to judge.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality49
Vitamin K is supplied in the favorable MK-7 form. The specific collagen preparation and some mineral details remain unclear, limiting comparison across the formula.
Ingredient Transparency75
Amounts and most ingredient sources are stated. Missing blend contents and magnesium-source proportions leave the complete composition unclear.
Value For Money49
Collagen offers reasonable value, while MK-7 provides a more middling value contribution. The other nutrients do not support a firm value conclusion.
Customer Satisfaction79
Customer feedback is very positive. Several hundred ratings offer a useful view of satisfaction, without showing bone or skin improvements.
Product Focus38
Bone support is the clearest purpose, particularly through vitamin D and K. Its wider links to skin, nails and cardiovascular measures remain limited or dependent on the exact preparation.
- Format
Tablet - Container
- 180 Tablet(s)
- Per serving
- $0.66
- Customer rating
- 4.7 · 655 ratings
Goals
Impact
Highest effect
Vitamin K · 180 mcgMagnesium · 20 mgCalcium · 200 mgVitamin D · 50 mcgCollagen · 2500 mg
Impact
Highest effect
Vitamin D · 50 mcgMagnesium · 20 mgVitamin K · 180 mcgCollagen · 2500 mg
Impact
High effect
Vitamin K · 180 mcgMagnesium · 20 mgVitamin D · 50 mcg
Impact
High effect
Vitamin K · 180 mcgMagnesium · 20 mgVitamin D · 50 mcg
Impact
Moderate effect
Vitamin D · 50 mcgCollagen · 2500 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin D3 (Cholecalciferol) | 50 mcg | |
Vitamin K2 (Menaquinone-7) | 180 mcg | |
Calcium (Aquamin) | 200 mg | |
Magnesium (Aquamin Sea Minerals, Magnesium Citrate) | 20 mg | |
hydrolyzed Collagen | 2500 mg | |
Aquamin Sea Minerals (mineralized Red Algae) | 666 mg |
Vitamin K (Menaquinone-7) · 180 mcg OverallScore83
A serving provides 180 mcg of MK-7 at a somewhat high cost per serving. It uses vitamin K2 as MK-7. The MK-7 isomer is not specified.
How this ingredient is rated
Active Ingredient Quality & Bioavailability82
It uses vitamin K2 as MK-7. The MK-7 isomer is not specified.
Vitamin K Form (MK-7 vs. MK-4 vs. K1)
It contains MK-7; MK-7 stays in the bloodstream longer than other vitamin K forms.
MK-7 Isomer Disclosure
The MK-7 isomer is not specified as trans or all-trans.
Dose, Safety & Label Transparency100
A serving provides 180 mcg of MK-7. The form and amount are stated.
Vitamin K2 (MK-7) Dosage Efficacy
The serving provides 180 mcg of MK-7.
Form and Subtype Transparency
The MK-7 form and amount are stated.
Value50
The cost per serving is somewhat high.
Price per Effective MK-7 Serving
The cost per serving is somewhat high.
Collagen · 2500 mg OverallScore57
Alternative products
Report alternatives
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.
- Effect of Calcium and Vitamin D Supplementation With and Without Collagen Peptides on Volumetric and Areal Bone Mineral Density, Bone Geometry and Bone Turnover in Postmenopausal Women With Osteopenia.
- Bone turnover and bone collagen maturation in osteoporosis: effects of antiresorptive therapies.
- A calcium-collagen chelate dietary supplement attenuates bone loss in postmenopausal women with osteopenia: a randomized controlled trial.
- Assessment of Osteoporosis in Lumbar Spine: In Vivo Quantitative MR Imaging of Collagen Bound Water in Trabecular Bone.
- Effect of calcium and vitamin D supplementation with and without collagen peptides on bone turnover in postmenopausal women with osteopenia.
- Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies.
- Bioabsorbable Magnesium-Based Materials Potential and Safety in Bone Surgery: A Systematic Review.
- Vascularized bone grafting fixed by biodegradable magnesium screw for treating osteonecrosis of the femoral head.
- An update on magnesium and bone health.
- Sex-specific differences in the association of magnesium intake with femoral neck bone mineral density among older adults.
- 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.