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Calcium Magnesium Zinc + Vitamin D3

Best Naturals
4.8
★ ★ ★ ★ ★
(385 ratings)
Calcium 1000 mg
Magnesium 400 mg
Zinc 25 mg
Product Image
Score94

This supplement offers a blend of calcium, magnesium, zinc, and Vitamin D3 with exceptionally high dosages, particularly for magnesium (800mg) and zinc (50mg), which exceed safe supplemental intake levels and pose significant health risks.

How scoring works
Quantity:300 Tablet(s) • (100 servings)
Goals:
Bone Health
General Health
Testosterone Support
Sleep Support
Stress Relief
Hair Health
Metabolism Boost
Immunity

Score 94

This supplement offers a blend of calcium, magnesium, zinc, and Vitamin D3 with exceptionally high dosages, particularly for magnesium (800mg) and zinc (50mg), which exceed safe supplemental intake levels and pose significant health risks.

How scoring works
$17.99($0.17 per serving)
iHerb
$ 19.55
Vitacost
$ 18.59
Walmart
$ 17.99
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Analysis

Best Naturals' Calcium Magnesium Zinc + Vitamin D3 supplement aims to combine these four essential nutrients in a single tablet. It features a blend of calcium from carbonate and citrate forms, magnesium from citrate and oxide, and zinc from gluconate and oxide, alongside 15mcg of Vitamin D3. These ingredients are typically chosen for their roles in supporting bone health, muscle function, and immune system vitality.

A critical issue with this formulation is the remarkably high concentration of each mineral per serving. With a total of 2000mg of calcium, 800mg of magnesium, and 50mg of zinc, both the magnesium and zinc dosages significantly exceed the generally accepted safe upper intake levels for supplemental use. This aggressive dosing strategy carries substantial risks of adverse effects, including severe digestive distress and nutrient imbalances, especially with consistent consumption.

While the inclusion of more bioavailable forms like calcium citrate, magnesium citrate, and zinc gluconate is a positive, their benefits are overshadowed by the dangerously high cumulative quantities. The product's overall design makes it challenging for most individuals to use safely and effectively for balanced daily mineral intake.

Pros

  • Combines calcium, magnesium, zinc, and Vitamin D3 in one supplement.
  • Includes more bioavailable forms such as calcium citrate, magnesium citrate, and zinc gluconate.
  • Provides a good dose of Vitamin D3 (15mcg) to support calcium absorption.
  • Available in a larger quantity for extended use at a low price per serving.

Cons

  • Magnesium (800mg) and Zinc (50mg) dosages are well above the generally recognized safe upper intake levels for supplemental forms.
  • The total Calcium dosage (2000mg) is very high and close to the overall tolerable upper intake limit for adults, especially when combined with dietary sources.
  • Excessive magnesium can cause severe digestive issues like diarrhea.
  • High zinc intake can interfere with copper absorption and lead to other adverse effects.
  • The inclusion of less bioavailable forms like magnesium oxide and zinc oxide detracts from overall quality despite other good forms.

Warnings

  • Consult a healthcare professional before taking this product due to the extremely high dosages of magnesium and zinc.
  • Excessive intake of zinc can lead to copper deficiency and severe gastrointestinal upset.
  • High doses of magnesium can cause severe digestive disturbances such as diarrhea and cramping.
  • Individuals with kidney disease or other medical conditions should strictly avoid high mineral supplementation without direct medical guidance.

Nutrient quality

90 Highest impact

The combination of multiple mineral forms and Vitamin D3 is a significant quality driver. Potent dosages for all active ingredients support multiple skeletal health pathways.

Ingredient transparency

98 Highest impact

Labeling clearly specifies the multiple chemical forms and total nutrient weights for each mineral included. This comprehensive disclosure provides consumers with clear information regarding the mineral sources.

Customer satisfaction

89 Highest impact

High ratings across a solid review base indicate strong consumer confidence. Feedback suggests the mineral blend is effective and well-received for daily structural support.

Value for money

99 Highest impact

The cost per serving is exceptionally low for such a diverse and potently dosed mineral blend. It offers outstanding value for individuals seeking long-term skeletal support.

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Goals

General Health
Impact
Highest effect
A Goal FitB Strength of SupportB CoverageB+ Formula Quality

This mineral-focused supplement provides high doses of Calcium and Magnesium along with Zinc and Vitamin D3. These nutrients are essential for maintaining foundational structural health and supporting immune readiness.

The 50 mg dose of Zinc is quite high and may require monitoring for long-term use due to the risk of copper depletion. It appears well aligned for structural support but lacks balance in its trace mineral profile.

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Bone Health
Impact
Highest effect
A- Goal FitB Strength of SupportC+ CoverageA Formula Quality

Calcium carbonate and citrate provide a substantial elemental mineral load to support skeletal density and structural integrity. Including magnesium and zinc offers necessary cofactors for mineral metabolism and enzymatic functions in bone tissue.

Vitamin D3 is present to facilitate intestinal calcium absorption, though the dose is relatively modest for therapeutic needs. The mix of mineral forms provides a balance between high yield and better solubility.

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Testosterone Support
Impact
Highest effect
A Goal FitB Strength of SupportC+ CoverageB+ Formula Quality

Magnesium, Zinc, and Vitamin D3 represent a trifecta of essential micronutrients for testosterone production. This formula provides high doses of all three, addressing multiple fundamental building blocks.

The use of mineral oxides and very high dosages for long-term use requires caution. The high Zinc levels and lack of Copper may lead to mineral imbalances over time.

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Sleep Support
Impact
Highest effect
A- Goal FitB- Strength of SupportB- CoverageA- Formula Quality

Magnesium, zinc, and vitamin D3 are the active sleep-relevant components in this mineral complex, providing a broad range of nutritional support. The 400 mg magnesium dose may contribute to physical relaxation, while zinc serves as a cofactor for melatonin synthesis.

The inclusion of both citrate and oxide forms of minerals provides a mix of absorption profiles. This formulation supports the foundational nutritional requirements for healthy sleep, although the high calcium content should be noted for its potential impact on magnesium absorption.

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Stress Relief
Impact
High effect
A- Goal FitB Strength of SupportB CoverageB- Formula Quality

Magnesium and Vitamin D3 serve as foundational nutrients for regulating the nervous system and promoting systemic relaxation. A dose of 400mg of magnesium appears well-aligned with therapeutic requirements for muscle tension relief and modulating the cortisol response.

Zinc is included to support hormonal balance and contribute to long-term neurological resilience. However, the high ratio of calcium in this formula may lead to competition for absorption, potentially reducing the overall efficiency of the magnesium component.

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Hair Health
Impact
High effect
A- Goal FitB+ Strength of SupportD CoverageB+ Formula Quality

This multi-mineral formulation provides high-dose zinc to support follicle tissue growth and cellular repair. It targets the core mineral requirements for maintaining healthy hair follicles and ensuring strong fiber production.

A concentrated dose of zinc is combined with calcium and magnesium for broad metabolic support. While it addresses foundational mineral gaps, the lack of copper balance should be noted when using high doses over long periods.

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Ingredients

IngredientAmount per serving
Vitamin D3 (Cholecalciferol)
 15 mcg
Calcium (Calcium Carbonate, Calcium Citrate)
 1000 mg
Magnesium (Magnesium Citrate, Magnesium Oxide)
 400 mg
Zinc (Zinc Gluconate, Zinc Oxide)
 25 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Calcium (Calcium Carbonate, Calcium Citrate) · 1000 mg OverallScore74
A- Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyA+ Value
This multi-nutrient tablet provides a blend of calcium forms along with magnesium, zinc, and vitamin D3. It is a very affordable option for those looking for basic multi-mineral support.
View ingredientView products
Magnesium (Magnesium Citrate, Magnesium Oxide) · 400 mg OverallScore59
F Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyB- Value
Economical tablets provide a blend of magnesium citrate and oxide alongside calcium and Vitamin D3. This formula is designed for budget-friendly daily mineral support over a long duration.
View ingredientView products
Zinc (Zinc Gluconate, Zinc Oxide) · 25 mg OverallScore58
D+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyB+ Value
This combination formula provides a significant dose of zinc alongside other essential minerals. It includes a mix of zinc forms, though the high total amount and lack of copper suggest it may be best for short-term use.
View ingredientView products
93 Value

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★★★★★
(25011 ratings)
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(9217 ratings)
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(33692 ratings)
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Other sellers (6)
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ZMX2

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★★★★★
(2289 ratings)
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92 Performance

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Solaray
4.8
★★★★★
(22092 ratings)
Featuring a complex of amino acid chelates and glutamic acid, this formula is specifically designed to support the digestive environment for mineral utilization. It provides a more advanced array of mineral forms for better systemic maintenance.
Other sellers (3)
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