Magnesium Carbonate (Heavy, Bulk Density 0.5)
Magnesium Carbonate — Heavy grade; anti‑caking, pH regulator; Low solubility; grade-dependent bulk density.
Magnesium Carbonate (Heavy) Heavy grade food additive / mineral source
| Benefit |
Typical study dose* |
Key human findings |
High-quality sources |
| Magnesium fortification |
50–200 mg elemental Mg/day; per‑serving delivery depends on formulation |
Supports enzymatic, neuromuscular, cardiovascular functions in deficient populations |
ODS: Magnesium Fact Sheet |
| pH regulation / buffering |
Formulation‑specific; neutralizes acid (CO₂ release) to stabilize pH |
Helps moderate acidity and maintain flavor balance in beverages/foods |
Lohmann‑Minerals Technical Note |
| Anti‑caking / flow aid |
Typically 0.2–1.0% in powder systems under GMP |
Improves free‑flow behavior and reduces clumping in powders |
FAO GSFA — Magnesium carbonate |
*Doses vary by formulation and target population.
Mechanistic highlights
- Acid neutralization: Reacts with gastric/food acids to form Mg²⁺, CO₂, and water
- Poor water solubility: Remains largely insoluble at neutral pH; solubility ↑ with acidity
- Powder flow / moisture uptake: Porous particles help absorb moisture and improve flowability
Safety & practical use
- Grade note: Heavy; Low solubility; grade-dependent bulk density
- Usual supplemental range: 50–200 mg elemental Mg/day across diet/supplements
- Upper‑dose tolerance: High single doses may cause GI upset; split dosing preferred
- Drug interactions: May chelate with some drugs (e.g., tetracyclines); separate dosing
- Populations needing oversight: Renal impairment, electrolyte disorders, and those on interacting medications
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