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Calcium Magnesium plus Boron

Solgar
4.8
(1086 ratings)
Boron 3 mg
Magnesium 400 mg
Calcium 1000 mg
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Score 15.0

Solgar's Calcium Magnesium plus Boron provides dangerously high levels of calcium and magnesium, far exceeding safe daily limits, and lacks essential co-factors like Vitamin D3 and K2 for proper mineral absorption and utilization, making it a potentially risky choice.

Quantity: 250 Tablet(s)Servings size: 3 Tablet(s) (83 servings)
Selected goals:
Other goals:
Bone Health
Joint Health
Muscle Gain
Brain Health
Fitness

Score 15.0

Solgar's Calcium Magnesium plus Boron provides dangerously high levels of calcium and magnesium, far exceeding safe daily limits, and lacks essential co-factors like Vitamin D3 and K2 for proper mineral absorption and utilization, making it a potentially risky choice.

Analysis

This product, despite its reputable brand, presents a highly problematic formulation due to the exceptionally high dosages of calcium (3000mg) and magnesium (1200mg) per serving. These amounts drastically exceed the safe tolerable upper intake levels for most adults, leading to potential risks like hypercalcemia, kidney stones, and severe digestive issues. Furthermore, the inclusion of less bioavailable forms like magnesium oxide and calcium carbonate, alongside better forms like citrate and gluconate, without the critical co-nutrients Vitamin D3 and K2, severely compromises the effective and safe utilization of the calcium, making it poorly suited for its stated bone and heart health goals. Online reviews praising the brand may overlook these critical formulation flaws.

Pros
  • Contains three key minerals (Calcium, Magnesium, Boron) known for synergistic benefits.
  • Includes some highly bioavailable forms of calcium and magnesium (citrate, gluconate).
Cons
  • Dangerously high doses of calcium (3000mg) and magnesium (1200mg) per serving, significantly exceeding Tolerable Upper Intake Levels and posing substantial health risks.
  • Crucially lacks synergistic nutrients like Vitamin D3 and K2, which are essential for directing calcium to bones and preventing its deposition in soft tissues and arteries, a risk amplified by the extremely high calcium content.
  • Includes less absorbable mineral forms (Magnesium Oxide, Calcium Carbonate) in the blend, despite the presence of more bioavailable ones.
Warnings
  • Daily intake of 3000mg Calcium significantly exceeds the UL of 2500mg, increasing risks of hypercalcemia, kidney stones, and cardiovascular complications.
  • Daily intake of 1200mg Magnesium significantly exceeds the UL of 350mg from supplements, likely causing severe diarrhea, abdominal cramping, and other adverse effects.
  • The absence of Vitamin D3 and K2 makes the high calcium dose particularly problematic for bone health, as calcium may not be properly absorbed and directed.
$15.19($0.18 per serving)
Pure Formulas
$ 16.79
Daily Vita
$ 18.47
Amazon
$ 47.49
iHerb
$ 15.83
Vitacost
$ 15.19
Ingredients
IngredientAmount per serving
Calcium (Calcium Gluconate, Calcium Citrate, Calcium Carbonate) 1000 mg
Magnesium (Magnesium Oxide, Magnesium Gluconate, Magnesium Citrate) 400 mg
Boron (Boron Citrate) 3 mg
Gluten Free Adults 18–50 Kosher Dairy Free Sugar Free Vegetarian
Categories
Boron 70.0
The 3mg dose of Boron Citrate is a good, safe, and effective amount of boron, which is the only well-formulated part of this product.
Calcium 10.0
The 3000mg per serving is dangerously high and significantly exceeds the UL, increasing risks of hypercalcemia, kidney stones, and unwanted calcium deposition in soft tissues, especially without D3/K2.
Magnesium 10.0
The 1200mg per serving is far above the safe UL for supplemental magnesium, almost guaranteeing severe digestive side effects such as diarrhea.
Goals
Joint Health 30.0
While boron supports joint health and magnesium can aid in discomfort, the overall extreme mineral dosages and the lack of essential co-factors create a problematic profile that outweighs potential joint benefits.
Stress Relief 30.0
Magnesium is known for stress reduction; however, the extremely high dose could lead to side effects like diarrhea, counteracting any potential calming effects and adding physical stress.
Sleep Support 30.0
While magnesium can aid sleep, the excessive dosage increases the likelihood of side effects such as gastrointestinal distress, which would interfere with restful sleep.
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(2209 ratings)
This option provides high doses of highly bioavailable Calcium and Magnesium amino acid chelates, crucially paired with Vitamin D3 and K2, which are essential cofactors for optimal calcium absorption and bone and heart health, offering a more complete bone support formula.
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(97627 ratings)
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ConcenTrace Trace Mineral Tablets

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(1073 ratings)
Providing Calcium, Magnesium, and Boron along with a wide spectrum of trace minerals, this product is cheaper per serving (14 vs 19) and offers a broader mineral profile for general health, albeit with lower doses of the primary ingredients.
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Calcium Magnesium & Zinc

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4.7
(25011 ratings)
At a slightly lower price per serving (16 vs 19), this product still delivers a substantial 1000mg of Calcium (Gluconate, a somewhat better form than carbonate) and 400mg of Magnesium (Oxide), offering a cost-effective mineral combination.
78 Value

Magnesium & Calcium

NOW
4.8
(16706 ratings)
While slightly more expensive per serving (24 vs 19), this product offers Calcium and Magnesium sourced from Aquamin TG seaweed, providing a natural, highly absorbable form of both minerals with a beneficial magnesium-to-calcium ratio, offering better bioavailability for general mineral support.
90 Value

Magnesium Caps 500 mg

Life Extension
4.8
(71611 ratings)
Though it solely provides magnesium, its exceptionally bioavailable TRAACS Magnesium Lysyl Glycinate Chelate form at a remarkably low price per serving (9 vs 19) makes it a superior value for addressing the Solgar product's primary weakness in magnesium absorption, and can be combined with a separate calcium.
82 Value

Calcium (Carbonate Aspartate & Citrate) 500 mg

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(307 ratings)
This alternative offers highly bioavailable Calcium Citrate at an extremely low price per serving (4 vs 19), enabling consumers to pair it with a separate, high-quality magnesium supplement for a potentially more effective and customized mineral intake at a better overall cost.
85 Performance

Vegan Cal Mag Plus

DEVA
4.7
(849 ratings)
This alternative matches the price per serving while offering vastly superior, highly bioavailable forms of both Calcium (Malate) and Magnesium (Chelate), ensuring much better absorption and utilization, particularly for systemic health benefits.
90 Performance

Calcium Bone Maker Complex with MCH-Cal and VitaMK7

Doctor's Best
4.7
(6735 ratings)
Featuring MCHA (Microcrystalline Hydroxyapatite), a superior whole-food calcium source, alongside highly bioavailable DiMagnesium Malate and Boron, this product offers a more holistic and absorbable approach to comprehensive bone and mineral support.
92 Performance

Cal/Mag/Vit D3 with Vitamin K2

NaturesPlus
4.6
(2209 ratings)
This option provides high doses of highly bioavailable Calcium and Magnesium amino acid chelates, crucially paired with Vitamin D3 and K2, which are essential cofactors for optimal calcium absorption and bone and heart health, offering a more complete bone support formula.