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Cal-Mag Citrate 1:1 ratio

Solaray

4.6
(1334 ratings)
Calcium 1000 mg
Magnesium 1000 mg
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Score 68.0

A high-dose calcium and magnesium supplement with a 1:1 ratio, but critically lacks Vitamin D and uses poorly absorbed forms (hydroxide, oxide) for a significant portion of its minerals, leading to limited bioavailability and effectiveness for its high price.

Quantity: 180 VegCap(s)Servings size: 6 VegCap(s) (30 servings)
Selected goals:
Other goals:
Bone Health
Joint Health
Heart Health
Fitness
Stress Relief

Score 68.0

A high-dose calcium and magnesium supplement with a 1:1 ratio, but critically lacks Vitamin D and uses poorly absorbed forms (hydroxide, oxide) for a significant portion of its minerals, leading to limited bioavailability and effectiveness for its high price.

Analysis

Solaray's Cal-Mag Citrate 1:1 ratio product provides an exceptionally high dose of both calcium (2000mg) and magnesium (2000mg) in a balanced 1:1 elemental ratio. It includes both calcium citrate and magnesium citrate, which are highly bioavailable forms and generally well-tolerated. However, the formulation is significantly hampered by the inclusion of calcium hydroxide and magnesium oxide. Both of these forms are known for their very poor systemic absorption; calcium hydroxide can be particularly irritating and magnesium oxide primarily acts as a laxative, meaning that a substantial portion of these high doses may not be effectively absorbed or utilized by the body for its intended physiological functions. Furthermore, a critical oversight for a bone health supplement is the complete absence of Vitamin D, which is essential for calcium absorption. Without Vitamin D, the body struggles to integrate calcium into bones, severely limiting the benefits of even the absorbable citrate components. The high price per serving ($0.71) is not fully justified given these bioavailability limitations and the lack of Vitamin D.

Pros
  • Offers a very high dose of calcium (2000mg) and magnesium (2000mg) in a 1:1 ratio.
  • Includes calcium citrate and magnesium citrate, which are highly bioavailable forms.
  • Available from a reputable brand (Solaray).
Cons
  • Does not contain any Vitamin D, which is essential for calcium absorption and utilization for bone health.
  • Contains calcium hydroxide and magnesium oxide, both of which are poorly absorbed and can cause digestive issues.
  • The exceptionally high doses may be unnecessary for many individuals and could lead to digestive upset.
  • High price per serving ($0.71) given the inclusion of less bioavailable forms and absence of Vitamin D.
Warnings
  • Due to the high doses and inclusion of poorly absorbed forms, digestive upset (e.g., diarrhea) is a significant possibility.
  • Must be supplemented with Vitamin D to facilitate calcium absorption for bone health.
  • These very high doses are typically meant to be split into multiple servings throughout the day, which may not be clear to all users.
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$23.04($0.76 per serving)
Amazon
$ 23.04
Walmart
$ 23.69
iHerb
$ 23.69
Vitacost
$ 23.69
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Effectiveness for goals

Dosage, timing & forms

Safety & interactions

Ingredients

IngredientAmount per serving
Protein 1 Gram(s)
Calcium (Calcium Hydroxide, Calcium Citrate) 1000 mg
Magnesium (Magnesium Oxide, Magnesium Citrate) 1000 mg
Adults 18–50 Vegan Dairy Free Vegetarian
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Categories

While calcium citrate is a good form, a significant portion comes from calcium hydroxide, which is poorly absorbed and can be irritating, limiting overall bioavailability.
The blend includes good magnesium citrate, but the very large amount of poorly absorbed magnesium oxide significantly reduces its overall systemic bioavailability and effectiveness.

Goals

Contains calcium and magnesium but the significant reliance on poorly absorbed oxide and hydroxide forms limits its potential to effectively support cardiovascular function and blood pressure regulation.
Magnesium citrate offers some calming benefits, but the very large dose of poorly absorbed magnesium oxide means its overall effectiveness for stress reduction is diluted and may cause digestive issues.
Magnesium citrate can promote relaxation for sleep, but the very large dose of poorly absorbed magnesium oxide reduces its overall effective support for improving sleep quality and may cause digestive discomfort.
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Report alternatives