Nutrient quality
60 Moderate impact
While the quantity of elemental magnesium is high, magnesium oxide is generally considered less bioavailable than other forms, which lowers its overall nutrient quality score for absorption.
Analysis
This supplement is essentially a high-dose magnesium oxide product, with 483mg of elemental magnesium per serving. Magnesium oxide delivers a high percentage of elemental magnesium, making it a common choice for those needing a substantial amount. However, it tends to be less bioavailable compared to other forms like citrate or glycinate, meaning the body may not absorb as much of it.
It also contains a small amount of calcium carbonate (130mg), which is not enough to consider it a primary calcium supplement or a balanced calcium-magnesium product. This product is best suited for individuals whose primary goal is to boost magnesium intake economically, particularly if they tolerate magnesium oxide well.
Pros
- Offers a high dose of elemental magnesium
- Very economical price per serving
- Simple formulation focusing on magnesium
Cons
- Magnesium oxide is often less bioavailable than other magnesium forms
- Minimal calcium content, not a balanced Cal/Mag product
- May cause digestive upset or laxative effects in some individuals due to magnesium oxide
Warnings
- Magnesium oxide can have a laxative effect; start with a lower dose if sensitive.
- Consider pairing with a separate, more absorbable calcium supplement if bone health is a primary concern.
- Consult a healthcare professional if you have kidney conditions or are taking medications that interact with magnesium.
