Calcium Mag & D Complex

Calcium Mag & D Complex

Nature's Way4.7 (913 ratings)
Format:Capsule Quantity: 100 Capsule(s) · 33 servings
Goals
$10.47 $0.31 per serving

Product analysis

59 out of 100

Calcium Mag & D Complex may help fill calcium and magnesium gaps that affect normal bone and muscle function. Undisclosed proportions of the mineral forms make their absorption harder to compare.

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

Nutrient Quality38

The calcium and magnesium mixtures contain forms with differing absorption potential. Their undisclosed proportions make it difficult to judge the mixtures as a whole.

Ingredient Transparency73

The nutrient amounts and mineral forms are disclosed. The share of each calcium and magnesium form is missing, limiting detailed comparison.

Value For Money53

The serving cost is favorable for calcium and less competitive for magnesium. There is not enough information to judge vitamin D’s value separately.

Customer Satisfaction80

Customer ratings are positive. The smaller review base gives a more limited picture of customer experience.

Product Focus69

Mineral nutrition for bone and everyday health is the clearest purpose. The small vitamin D contribution limits its support for calcium absorption, while broader stress or heart benefits remain uncertain.

Format
Capsule
Container
100 Capsule(s)
Per serving
$0.31
Customer rating
4.7 · 913 ratings
Report analysis

Goals

Impact
High effect
B- Ingredient FitD+ PathwaysA+ EvidenceA Formulation Logic
Magnesium · 250 mgCalcium · 500 mgVitamin D · 5 mcg

Calcium supplies material for bone mineralization, while magnesium contributes to normal bone metabolism when intake is low. The declared serving provides 500 mg calcium and 250 mg magnesium, making mineral supply the main contribution. Vitamin D is present at 5 mcg per serving, a small amount that limits calcium-absorption support in the saved findings. These nutritional roles do not establish routine fracture prevention.

How this product is rated for Bone Health

Ingredient fit75

Calcium and magnesium give the formula a clear mineral focus; vitamin D is present at a small serving amount.
Goal fit
The relevant formula centers on calcium and magnesium without unrelated actives diluting the mineral focus.
Dose adequacy
Calcium provides a practical gap-filling amount and magnesium a partial intake contribution; vitamin D is too small for inclusion.

Pathways55

Mineral supply is strongly represented, while calcium regulation is more limited.
Depth
Calcium and magnesium make mineral supply the strongest represented function.
Breadth
Only mineral supply is substantially represented; calcium regulation is weaker and other bone functions are not covered.

Evidence100

Calcium anchors the nutritional evidence and magnesium adds support for normal metabolism.
Evidence strength
Calcium supplies the strongest recognized nutritional evidence, without establishing fracture prevention in every user.
Studied preparation
The calcium and magnesium preparations are recognized in the supplied findings without implying one mineral form is superior.

Formulation logic92

Calcium and magnesium meet the inclusion threshold, but the small vitamin D serving leaves calcium's partner requirement unmet.
Partner coverage
Vitamin D is present but too small to satisfy calcium's supplied partner requirement.
Conflicts
No configured conflict was identified; the small vitamin D amount does not trigger the high-amount condition.
Effective doses
Both included minerals meet the amount threshold; the small vitamin D serving does not.
Study evidence
Calcium Supportive 144 studies
Magnesium Supportive 48 studies
Vitamin D Supportive 202 studies
Impact
High effect
B Ingredient FitD+ PathwaysA- EvidenceA+ Formulation Logic
Vitamin D · 5 mcgMagnesium · 250 mg

Calcium and magnesium can help fill dietary gaps, with calcium relevant to the bone loss associated with long-term inadequate intake. Their serving amounts contribute only part of broader intake needs. Vitamin D is present at 5 mcg per serving but receives no contribution in the saved result; no additional combination benefit is established.

How this product is rated for Everyday Health

Ingredient fit79

The relevant nutrient selection is focused, while other linked uses broaden the formula’s overall focus. The serving provides uneven nutrient amounts, with some contributing more toward the comparison references than others.
Goal fit
The relevant nutrient selection is focused, while other linked uses broaden the formula’s overall focus.
Dose adequacy
The serving provides uneven nutrient amounts, with some contributing more toward the comparison references than others.

Pathways50

The strongest assigned connection is energy metabolism cofactors, reflecting a specific role rather than broad improvement in health.
Depth
The strongest assigned connection is energy metabolism cofactors, reflecting a specific role rather than broad improvement in health.
Breadth
The assigned contributions concentrate on one area, leaving other general-health roles less covered.

Evidence86

Magnesium anchors this finding; the supplied evidence supports conditional nutritional or population-specific relevance rather than universal benefit.
Evidence strength
Magnesium anchors this finding; the supplied evidence supports conditional nutritional or population-specific relevance rather than universal benefit.
Studied preparation
The evaluated preparations meet the saved criteria; no chemical form or delivery advantage is established.

Formulation logic100

No conflict is identified by the evaluated rules. Partner requirements are satisfied; the included serving amounts have differing nutritional relevance.
Partner coverage
The included ingredients work alone or have required partners, without establishing additional combination benefit.
Conflicts
No conflict is identified by the evaluated rules.
Effective doses
The counted ingredients meet the configured amount threshold; that does not establish a treatment dose or greater benefit above adequacy.
Study evidence
Magnesium Supportive 114 studies
Vitamin D Supportive 115 studies
Impact
High effect
C Ingredient FitD- PathwaysB EvidenceA+ Formulation Logic
Magnesium · 250 mgVitamin D · 5 mcg

Magnesium has a plausible role in vascular function, especially with low magnesium status or elevated blood pressure. Trials of arterial stiffness and blood pressure have been inconsistent. The declared magnesium salts have no established superior cardiovascular efficacy. The 250 mg per serving receives partial amount recognition.

How this product is rated for Cardiovascular Support

Ingredient fit64

Magnesium provides the principal recognized connection. Amount or disclosure limitations reduce the combined finding.
Goal fit
Relevant ingredients sit within a broader formula with several actives not established for this goal.
Dose adequacy
The declared amounts receive partial combined recognition; lower or unresolved amounts limit comparison with the supplied reference exposures.

Pathways43

The strongest recognized area is vascular tone and sodium balance. Coverage remains concentrated in one area.
Depth
Vascular tone and sodium balance is the strongest recognized area; this is a marker connection, not a prediction of clinical-event prevention.
Breadth
One area meets the supplied coverage requirement, leaving limited breadth across other cardiovascular outcomes.

Evidence79

Magnesium leads the saved evidence finding. The supplied preparation, population and outcome limitations constrain the practical claim.
Evidence strength
Magnesium has the strongest recognized evidence among counted ingredients; marker changes and essential functions do not automatically establish fewer cardiovascular events.
Studied preparation
The saved findings recognize the eligible preparations; this does not establish identical exposure, population or outcomes to the cited interventions.

Formulation logic100

No required partner is missing and no assessed conflict is recorded.
Partner coverage
The counted ingredients work without an additional missing partner; no extra combination benefit is established.
Conflicts
No assessed conflict is recorded; this does not establish comprehensive interaction testing.
Effective doses
All counted ingredients meet the saved minimum amount criterion, which is not proof of a clinically effective cardiovascular dose.
Study evidence
Magnesium Supportive 123 studies
Vitamin D Mixed 170 studies
Impact
Moderate effect
C Ingredient FitF PathwaysB EvidenceA+ Formulation Logic
Vitamin D · 5 mcgMagnesium · 250 mg

Magnesium may help you feel less stressed if you're low in it. The possible benefit is conditional, and lasting relief from everyday stress is uncertain when you already get enough. The mixture of magnesium salts doesn't tell you how much each contributes or guarantee better absorption, so its different forms aren't a reason to expect a stronger calming effect.

How this product is rated for Stress Relief

Ingredient fit64

Magnesium has a conditional connection to stress when levels are low.
Goal fit
Magnesium has a conditional connection to stress when levels are low. Other ingredients serve broader purposes.
Dose adequacy
Vitamin D 5 mcg; Magnesium 250 mg per selected serving.

Pathways20

The clearest connection is to calming nerve activity, with a smaller connection to stress-hormone regulation.
Depth
The clearest connection is to calming nerve activity, with a smaller connection to stress-hormone regulation.
Breadth
The clearest connection is to calming nerve activity, with a smaller connection to stress-hormone regulation.

Evidence76

Magnesium may help in low-magnesium situations; broad, lasting relief from everyday stress remains uncertain.
Evidence strength
Magnesium may help in low-magnesium situations; broad, lasting relief from everyday stress remains uncertain.
Studied preparation
The declared ingredients and forms are identified; this does not guarantee the same benefit for every person.

Formulation logic100

The relevant ingredients can act without an additional required partner, and no particular ingredient conflict is identified. Their combination does not guarantee extra stress relief.
Partner coverage
No additional partner ingredient is required for the relevant ingredients to act individually.
Conflicts
No particular ingredient conflict is identified in this combination.
Effective doses
Vitamin D 5 mcg; Magnesium 250 mg per selected serving.
Study evidence
Magnesium Supportive 13 studies
Vitamin D Supportive 41 studies
Impact
High effect
C Ingredient FitD- PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 250 mgVitamin D · 5 mcg

Magnesium contributes to electrolyte balance and has limited, inconsistent evidence for small blood-pressure effects. The supplied trials include a null result, so its physiological role does not establish reliable blood-pressure improvement. This product's declared elemental magnesium contributes to the saved amount comparison. Its form is not shown to provide a superior heart benefit.

How this product is rated for Heart Health

Ingredient fit64

The relevant ingredients provide a mixed heart-health connection. Declared amounts partly meet the saved amount references.
Goal fit
Broader product aims and ingredients outside the credited heart-health roles reduce its specific focus.
Dose adequacy
The declared amounts provide partial coverage of the saved references; these are exposure comparisons rather than proven treatment doses.

Pathways45

The strongest saved connection is electrolyte and vascular-tone balance. Only this pathway reaches the breadth threshold.
Depth
The strongest saved connection concerns electrolyte and vascular-tone balance, without establishing a corresponding clinical outcome.
Breadth
Only one assessed pathway reaches the breadth threshold.

Evidence89

Magnesium provides the leading evidence contribution in the saved findings. The preparation check is satisfied for included ingredients, without establishing prevention of heart attacks or strokes.
Evidence strength
Magnesium supplies the leading evidence contribution, subject to the ingredient's population and outcome limitations.
Studied preparation
Included ingredients satisfy the saved preparation check; this does not establish efficacy of the finished product.

Formulation logic100

No required partner is missing, and no configured conflict was matched. Included amounts clear the saved minimum comparison threshold.
Partner coverage
No required partner is missing from the included contributions.
Conflicts
No configured ingredient conflict was matched.
Effective doses
All included ingredients clear the saved minimum amount threshold; this cutoff does not establish effective cardiovascular treatment.
Study evidence
Magnesium Supportive 158 studies
Vitamin D Mixed 164 studies
Energy
Impact
Moderate effect
C Ingredient FitF PathwaysA- EvidenceA+ Formulation Logic
Vitamin D · 5 mcgMagnesium · 250 mg

Magnesium at 250 mg supports normal energy metabolism and can help meet a dietary gap associated with fatigue or weakness. Extra energy benefit is not established when magnesium status is already adequate. The small 5 mcg vitamin D serving adds nutritional intake, with no assumed routine fatigue effect.

How this product is rated for Energy

Ingredient fit64

Several assessed ingredients support energy-related nutritional needs. The amounts provide partial alignment with the saved exposure comparison.
Goal fit
Several assessed ingredients support energy-related nutritional needs.
Dose adequacy
The amounts provide partial alignment with the saved exposure comparison.

Pathways0

No specific energy mechanism has meaningful coverage in the saved findings. The findings do not show broad coverage of the assessed energy mechanisms.
Depth
No specific energy mechanism has meaningful coverage in the saved findings.
Breadth
The findings do not show broad coverage of the assessed energy mechanisms.

Evidence88

Magnesium provides the strongest assessed evidence contribution at its amount. The assessed ingredient preparations at adequate amounts match the saved criteria.
Evidence strength
Magnesium provides the strongest assessed evidence contribution at its amount.
Studied preparation
The assessed ingredient preparations at adequate amounts match the saved criteria.

Formulation logic100

All 1 assessed ingredients meet the saved minimum amount comparison. No assessed conflict was identified.
Partner coverage
The assessed ingredients can contribute independently or have their required partner.
Conflicts
No conflict was identified by the supplied ingredient checks.
Effective doses
All 1 assessed ingredients meet the saved minimum amount comparison.
Study evidence
Magnesium Supportive 4 studies
Vitamin D Supportive 32 studies
Impact
High effect
C+ Ingredient FitC PathwaysB- EvidenceA+ Formulation Logic
Magnesium · 250 mgVitamin D · 5 mcg

Magnesium has limited exercise-related hormone findings that do not establish a routine testosterone benefit.

How this product is rated for Testosterone Support

Ingredient fit67

The recognized ingredients are part of a broader formula with limited focus on testosterone support. Some amounts provide only partial coverage of the saved references; unresolved amounts cannot establish an individual contribution.
Goal fit
The recognized ingredients are part of a broader formula with limited focus on testosterone support.
Dose adequacy
Some amounts provide only partial coverage of the saved references; unresolved amounts cannot establish an individual contribution.

Pathways60

The strongest recorded connection is free-testosterone availability, without establishing an increase in circulating testosterone.
Depth
The strongest recorded connection is free-testosterone availability, without establishing an increase in circulating testosterone.
Breadth
Recorded coverage is concentrated in one hormone-related area.

Evidence74

The leading ingredient is recognized in the saved findings, while population and nutrient-status distinctions limit expectations for routine hormone improvement.
Evidence strength
The leading ingredient is recognized in the saved findings, while population and nutrient-status distinctions limit expectations for routine hormone improvement.
Studied preparation
The declared preparation is recognized in the saved comparison; this does not establish benefit for every population.

Formulation logic100

No configured ingredient conflict was identified from the supplied facts. No required partner is missing for the recognized ingredients.
Partner coverage
No required partner is missing for the recognized ingredient contributions; this does not establish synergy.
Conflicts
No configured ingredient conflict was identified from the supplied facts.
Effective doses
The counted ingredients meet the saved amount threshold, which is not a proven effective testosterone dose.
Study evidence
Magnesium Disputed 5 studies
Vitamin D Supportive 56 studies

Ingredients

IngredientAmount per servingScore
Total Carbohydrates
1 Gram(s)
Vitamin D3 (Cholecalciferol)
5 mcg
Calcium (Calcium Carbonate, Calcium Citrate, Calcium Malate)
500 mg 78
Magnesium (Magnesium Aspartate, Magnesium Citrate, Magnesium Oxide)
250 mg 58
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
B- Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyB+ Value
Each serving supplies 500 mg of calcium from carbonate, citrate, and malate. The amounts contributed by the individual forms are unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability72

The sources are calcium carbonate, calcium citrate and calcium malate; their proportions are unknown. The calcium amount is stated as 500 mg per serving.
Calcium Form & Absorption Potential
The sources are calcium carbonate, calcium citrate and calcium malate; their proportions are unknown.
Elemental Calcium Transparency
The calcium amount is stated as 500 mg per serving.

Dose, Safety & Label Transparency84

The serving provides 500 mg of calcium. A flow agent is recorded among the other ingredients.
Absorption-Optimized Serving Dose
The serving provides 500 mg of calcium.
Formulation Purity & Additives
A flow agent is recorded among the other ingredients.

Value80

The whole-product serving costs about $0.31.
Price Per Serving Efficiency
The whole-product serving costs about $0.31.
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD Value
A serving supplies 250 mg of magnesium from aspartate, citrate and oxide. Their individual proportions are unknown, and the serving also contains 500 mg of calcium.
How this ingredient is rated

Active Ingredient Quality & Bioavailability21

The magnesium sources are magnesium aspartate, magnesium citrate, and magnesium oxide; their individual proportions are unknown. A specific branded or fully reacted magnesium claim is not established in the saved facts.
Magnesium Form & Absorption Potential
The magnesium sources are magnesium aspartate, magnesium citrate, and magnesium oxide; their individual proportions are unknown.
Patented Materials & Chelation Quality
A specific branded or fully reacted magnesium claim is not established in the saved facts.

Dose, Safety & Label Transparency100

A serving provides 250 mg of magnesium. Calcium is recorded as 500 mg per serving; a magnesium-related cofactor is recorded.
Elemental Yield Transparency
The saved facts specify 250 mg of elemental magnesium per serving.
Therapeutic Dosage Alignment
A serving provides 250 mg of magnesium.
Synergistic Formulation Logic
Calcium is recorded as 500 mg per serving; a magnesium-related cofactor is recorded.

Value48

The whole-product serving costs about $0.32. The evaluation considers the magnesium form when assessing that price.
Price Per Elemental Quality
The whole-product serving costs about $0.32. The evaluation considers the magnesium form when assessing that price.
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. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. Pregnancy vitamin D supplementation and offspring bone mineral density in childhood follow-up of a randomized controlled trial.
    Moon RJ; D' Angelo S; Curtis EM; Ward KA; Crozier SR; Schoenmakers I; Javaid MK; Bishop NJ; Godfrey KM; Cooper C; Harvey NC; MAVIDOS Trial Group · The American journal of clinical nutrition · 2024
    Randomized trial454 participantsBone Health forVitamin D
  12. Vitamin D analogs and bone: preclinical and clinical studies with eldecalcitol.
    Matsumoto T; Takano T; Saito H; Takahashi F · BoneKEy reports · 2014
    Narrative reviewBone Health forVitamin D
  13. Efficacy of vitamin D fortified foods on bone mineral density and serum bone biomarkers: A systematic review and meta-analysis of interventional studies.
    Tangestani H; Djafarian K; Emamat H; Arabzadegan N; Shab-Bidar S · Critical reviews in food science and nutrition · 2020
    Meta-analysis1,786 participants20 studies pooledBone Health forVitamin D
  14. Cholecalciferol Supplementation Attenuates Bone Loss in Incident Kidney Transplant Recipients: A Prespecified Secondary Endpoint Analysis of a Randomized Controlled Trial.
    Tsujita M; Doi Y; Obi Y; Hamano T; Tomosugi T; Futamura K; Okada M; Hiramitsu T; Goto N; Isaka Y; Takeda A; Narumi S; Watarai Y · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2022
    Randomized trial193 participantsBone Health forVitamin D
  15. Vitamin D supplementation and bone health in post-menopausal women: a 24-month randomized controlled intervention with enhanced bioavailability formulations.
    Rasool N; Munir Y · European journal of clinical nutrition · 2026
    Randomized trial612 participantsBone Health forVitamin D
  16. Circulating and dietary magnesium and risk of cardiovascular disease: a systematic review and meta-analysis of prospective studies.
    Del Gobbo LC; Imamura F; Wu JH; de Oliveira Otto MC; Chiuve SE; Mozaffarian D · The American journal of clinical nutrition · 2013
    Meta-analysis313,041 participants16 studies pooledCardiovascular Support forMagnesium
  17. Magnesium and the risk of cardiovascular events: a meta-analysis of prospective cohort studies.
    Qu X; Jin F; Hao Y; Li H; Tang T; Wang H; Yan W; Dai K · PloS one · 2013
    Meta-analysis532,979 participants19 studies pooledCardiovascular Support forMagnesium
  18. Quantitative Association Between Serum/Dietary Magnesium and Cardiovascular Disease/Coronary Heart Disease Risk: A Dose-Response Meta-analysis of Prospective Cohort Studies.
    Zhao L; Hu M; Yang L; Xu H; Song W; Qian Y; Zhao M · Journal of cardiovascular pharmacology · 2020
    Meta-analysis544,581 participants18 studies pooledCardiovascular Support Heart Health forMagnesium
  19. Comparative Efficacy of Nutraceuticals on Endothelial Function: A Systematic Review and Network Meta-Analysis.
    Norouzzadeh M; Rashedi MH; Mahdavi-Mazdeh G; Kosari A; Shahinfar H · Current atherosclerosis reports · 2026
    Meta-analysisCardiovascular Support Heart Health forMagnesium Cardiovascular Support Heart Health forVitamin D
  20. Serum magnesium, mortality, and cardiovascular disease in chronic kidney disease and end-stage renal disease patients: a systematic review and meta-analysis.
    Xiong J; He T; Wang M; Nie L; Zhang Y; Wang Y; Huang Y; Feng B; Zhang J; Zhao J · Journal of nephrology · 2020
    Meta-analysis200,934 participants20 studies pooledCardiovascular Support forMagnesium