Bone Food Unflavored

Bone Food Unflavored

California Gold Nutrition4.7 (7,124 ratings)
Format:Powder Quantity: 14 Ounce(s) · 60 servings
Goals
$34.64 $0.57 per serving

Product analysis

63 out of 100

Bone Food Unflavored combines collagen with vitamins and minerals, including favorable calcium and vitamin K forms. Its collagen form is unspecified, which makes comparisons with other collagen supplements harder.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality49

Calcium citrate and MK-7 vitamin K are favorable features of the formula. The unspecified collagen form leaves an important part of the combination uncertain.

Ingredient Transparency69

Amounts and most forms are disclosed, helping with comparisons. The collagen form and shares of the declared vitamin D and K forms remain unclear.

Value For Money59

Collagen, vitamin K and hyaluronic acid compare favorably for the cost, while calcium offers moderate value. Value for the remaining nutrients is uncertain.

Customer Satisfaction90

Customer feedback is very positive. The substantial review base gives a useful picture of satisfaction.

Product Focus63

The combination appears moderately aligned with its intended goals. Its broad ingredient list makes it less targeted than a single-ingredient supplement.

Format
Powder
Container
14 Ounce(s)
Per serving
$0.57
Customer rating
4.7 · 7,124 ratings
Report analysis

Goals

Longevity
Impact
High effect
B- Ingredient FitD PathwaysC+ EvidenceA+ Formulation Logic
Magnesium · 75 mgVitamin K · 120 mcgVitamin D · 5 mcgCollagen · 5 Gram(s)
Study evidence
Collagen Supportive 33 studies
Magnesium Supportive 12 studies
Vitamin C Supportive 30 studies
Vitamin D Supportive 50 studies
Vitamin K Supportive 27 studies
Zinc Supportive 10 studies
Bone Health
Impact
High effect
C+ Ingredient FitD PathwaysA EvidenceA Formulation Logic
Vitamin K · 120 mcgMagnesium · 75 mgCalcium · 250 mgVitamin D · 5 mcgZinc · 2.75 mgVitamin C · 90 mgCollagen · 5 Gram(s)
Study evidence
Calcium Supportive 144 studies
Collagen Supportive 16 studies
Magnesium Supportive 48 studies
Vitamin C Supportive 46 studies
Vitamin D Supportive 202 studies
Vitamin K Supportive 78 studies
Zinc Supportive 33 studies
Everyday Health
Impact
High effect
B- Ingredient FitC PathwaysA- EvidenceA+ Formulation Logic
Vitamin D · 5 mcgMagnesium · 75 mgVitamin K · 120 mcgCollagen · 5 Gram(s)Zinc · 2.75 mgVitamin C · 90 mg
Study evidence
Collagen Supportive 31 studies
Magnesium Supportive 114 studies
Vitamin C Supportive 56 studies
Vitamin D Supportive 115 studies
Vitamin K Supportive 34 studies
Zinc Supportive 60 studies
Heart Health
Impact
Moderate effect
D- Ingredient FitD- PathwaysB EvidenceA+ Formulation Logic
Vitamin K · 120 mcgMagnesium · 75 mgVitamin D · 5 mcg
Study evidence
Magnesium Supportive 158 studies
Vitamin D Mixed 164 studies
Vitamin K Mixed 62 studies
Cardiovascular Support
Impact
Moderate effect
D Ingredient FitD- PathwaysC+ EvidenceA+ Formulation Logic
Vitamin K · 120 mcgMagnesium · 75 mgVitamin D · 5 mcgVitamin C · 90 mg
Study evidence
Magnesium Supportive 123 studies
Vitamin C Supportive 101 studies
Vitamin D Mixed 170 studies
Vitamin K Supportive 40 studies

Ingredients

IngredientAmount per servingScore
Calories
20 Calorie(s)
Protein
4 Gram(s)
Vitamin C (Calcium Ascorbate)
90 mg
Vitamin D (Cholecalciferol, Vitamin D3)
5 mcg
Vitamin K (Menaquinone-7, Vitamin K2)
120 mcg 89
Calcium (Calcium Citrate)
250 mg 77
Magnesium (Magnesium Citrate)
75 mg
Zinc (Zinc Methionine)
2.75 mg
Sodium
10 mg
Marine Collagen Peptides, Hydrolyzed
5 Gram(s)
Hyaluronic Acid (Sodium Hyaluronate)
60 mg 66
Gluten Free Adults 18–50 Dairy Free
Report overview
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
The serving provides 120 mcg of vitamin K2 as MK-7 at a moderate cost. The MK-7 isomer is not specified.
How this ingredient is rated

Active Ingredient Quality & Bioavailability82

It provides vitamin K2 as MK-7. The MK-7 isomer is not specified.
Vitamin K Form (MK-7 vs. MK-4 vs. K1)
It provides vitamin K2 as MK-7.
MK-7 Isomer Disclosure
The MK-7 isomer is not specified.

Dose, Safety & Label Transparency100

120 mcg of MK-7 is provided per serving. The amount and form are stated.
Vitamin K2 (MK-7) Dosage Efficacy
120 mcg of MK-7 is provided per serving.
Form and Subtype Transparency
The amount and MK-7 form are stated.

Value80

The cost per serving is moderate.
Price per Effective MK-7 Serving
The cost per serving is moderate.
A- Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyD+ Value
Each serving provides 250 mg of calcium, a moderate amount, at a fairly high cost per serving. It uses Calcium Citrate. No specified artificial additives or flow agents are listed; sugar content is unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability86

The calcium amount is clearly stated. It uses Calcium Citrate.
Calcium Form & Absorption Potential
It uses Calcium Citrate.
Elemental Calcium Transparency
The label states 250 mg of elemental calcium per serving.

Dose, Safety & Label Transparency82

The serving provides 250 mg of calcium. No specified artificial additives or flow agents are listed; sugar content is unknown.
Absorption-Optimized Serving Dose
The serving provides 250 mg of calcium.
Formulation Purity & Additives
No specified artificial additives or flow agents are listed; sugar content is unknown.

Value50

The cost per serving is fairly high.
Price Per Serving Efficiency
The cost per serving is fairly high.
D+ Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyB+ Value
A serving provides 60 mg hyaluronic acid at a moderate cost. It uses sodium hyaluronate, and its source and production method are unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability53

The form is sodium hyaluronate, a salt of hyaluronic acid. The source and production method are unknown.
Molecular Weight & Form Optimization
It uses sodium hyaluronate, a salt form.
Source Transparency & Purity Signals
The source and production method are unknown.

Dose, Safety & Label Transparency72

The serving contains 60 mg hyaluronic acid, with the amount clearly stated.
Hyaluronic Acid Dosage Potency
A serving provides 60 mg hyaluronic acid.
Label Precision & Transparency
The hyaluronic acid amount is stated.

Value80

The cost per serving is moderate.
Price Per Active Dose
The serving cost is moderate.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. 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.
    Manoj P; Derwin R; George S · International journal of older people nursing · 2023
    Meta-analysis12,620 participants7 studies pooledBone Health forCalcium
  2. Calcium supplementation prevents seasonal bone loss and changes in biochemical markers of bone turnover in elderly New England women: a randomized placebo-controlled trial.
    Storm D; Eslin R; Porter ES; Musgrave K; Vereault D; Patton C; Kessenich C; Mohan S; Chen T; Holick MF; Rosen CJ · The Journal of clinical endocrinology and metabolism · 1998
    Randomized trial60 participantsBone Health forCalcium
  3. The effects of calcium supplementation (milk powder or tablets) and exercise on bone density in postmenopausal women.
    Prince R; Devine A; Dick I; Criddle A; Kerr D; Kent N; Price R; Randell A · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 1995
    Randomized trial168 participantsBone Health forCalcium
  4. The efficacy of calcium supplementation alone in elderly Thai women over a 2-year period: a randomized controlled trial.
    Rajatanavin R; Chailurkit L; Saetung S; Thakkinstian A; Nimitphong H · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2014
    Randomized trial404 participantsBone Health forCalcium
  5. Calcium-enriched foods and bone mass growth in prepubertal girls: a randomized, double-blind, placebo-controlled trial.
    Bonjour JP; Carrie AL; Ferrari S; Clavien H; Slosman D; Theintz G; Rizzoli R · The Journal of clinical investigation · 1997
    Randomized trial149 participantsBone Health forCalcium
  6. 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.
    Lampropoulou-Adamidou K; Karlafti E; Argyrou C; Makris K; Trovas G; Dontas IA; Tournis S; Triantafyllopoulos IK · Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry · 2022
    Randomized trial51 participantsBone Health forCollagen
  7. Bone turnover and bone collagen maturation in osteoporosis: effects of antiresorptive therapies.
    Byrjalsen I; Leeming DJ; Qvist P; Christiansen C; Karsdal MA · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2008
    Randomized trialBone Health forCollagen
  8. A calcium-collagen chelate dietary supplement attenuates bone loss in postmenopausal women with osteopenia: a randomized controlled trial.
    Elam ML; Johnson SA; Hooshmand S; Feresin RG; Payton ME; Gu J; Arjmandi BH · Journal of medicinal food · 2015
    Randomized trial39 participantsBone Health forCollagen
  9. Assessment of Osteoporosis in Lumbar Spine: In Vivo Quantitative MR Imaging of Collagen Bound Water in Trabecular Bone.
    Liu J; Liao JW; Li W; Chen XJ; Feng JX; Yao L; Huang PH; Su ZH; Lu H; Liao YT; Li SL; Ma YJ · Frontiers in endocrinology · 2022
    Methods validation study189 participantsBone Health forCollagen
  10. Effect of calcium and vitamin D supplementation with and without collagen peptides on bone turnover in postmenopausal women with osteopenia.
    Argyrou C; Karlafti E; Lampropoulou-Adamidou K; Tournis S; Makris K; Trovas G; Dontas I; Triantafyllopoulos IK · Journal of musculoskeletal & neuronal interactions · 2021
    Randomized trial51 participantsBone Health forCollagen
  11. Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies.
    Dominguez LJ; Veronese N; Ciriminna S; Pérez-Albela JL; Vásquez-López VF; Rodas-Regalado S; Di Bella G; Parisi A; Tagliaferri F; Barbagallo M · Nutrients · 2023
    Meta-analysis119,755 participants4 studies pooledBone Health forMagnesium
  12. Bioabsorbable Magnesium-Based Materials Potential and Safety in Bone Surgery: A Systematic Review.
    Hung CH; Kwok YC; Yip J; Wong HH; Leung YY · Craniomaxillofacial trauma & reconstruction · 2025
    Systematic review386 participants8 studies pooledBone Health forMagnesium
  13. Vascularized bone grafting fixed by biodegradable magnesium screw for treating osteonecrosis of the femoral head.
    Zhao D; Huang S; Lu F; Wang B; Yang L; Qin L; Yang K; Li Y; Li W; Wang W; Tian S; Zhang X; Gao W; Wang Z; Zhang Y; Xie X; Wang J; Li J · Biomaterials · 2016
    Randomized trial48 participantsBone Health forMagnesium
  14. An update on magnesium and bone health.
    Rondanelli M; Faliva MA; Tartara A; Gasparri C; Perna S; Infantino V; Riva A; Petrangolini G; Peroni G · Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2022
    Narrative reviewBone Health forMagnesium
  15. Sex-specific differences in the association of magnesium intake with femoral neck bone mineral density among older adults.
    Wang B; Tan X; Yao X; Zhu Z · Endocrine connections · 2025
    Cross-sectional study1,343 participantsBone Health forMagnesium
  16. Can Dietary Intake of Vitamin C-Oriented Foods Reduce the Risk of Osteoporosis, Fracture, and BMD Loss? Systematic Review With Meta-Analyses of Recent Studies.
    Zeng LF; Luo MH; Liang GH; Yang WY; Xiao X; Wei X; Yu J; Guo D; Chen HY; Pan JK; Huang HT; Liu Q; Guan ZT; Han YH; Zhao D; Zhao JL; Hou SR; Wu M; Lin JT; Li JH; Liang WX; Ou AH; Wang Q; Li ZP; Liu J · Frontiers in endocrinology · 2020
    Meta-analysis19,484 participants17 studies pooledBone Health forVitamin C
  17. Dietary vitamin C intake and the risk of hip fracture: a dose-response meta-analysis.
    Sun Y; Liu C; Bo Y; You J; Zhu Y; Duan D; Cui H; Lu Q · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2019
    Meta-analysis6 studies pooledBone Health forVitamin C
  18. Smoking, antioxidant vitamins, and the risk of hip fracture.
    Melhus H; Michaëlsson K; Holmberg L; Wolk A; Ljunghall S · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 1999
    Cohort study66,651 participantsBone Health forVitamin C
  19. Micronutrients and the risk of hip fracture: Case-control study.
    Torbergsen AC; Watne LO; Wyller TB; Frihagen F; Strømsøe K; Bøhmer T; Mowe M · Clinical nutrition (Edinburgh, Scotland) · 2018
    Case-control study189 participantsBone Health forVitamin C
  20. Favorable effect of dietary vitamin C on bone mineral density in postmenopausal women (KNHANES IV, 2009): discrepancies regarding skeletal sites, age, and vitamin D status.
    Kim YA; Kim KM; Lim S; Choi SH; Moon JH; Kim JH; Kim SW; Jang HC; Shin CS · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2016
    Cross-sectional study1,196 participantsBone Health forVitamin C