Magnesium Chloride Hexahydrate

Magnesium chloride hexahydrate is a highly water-soluble magnesium salt that provides bioavailable magnesium ions (Mg²⁺) for cellular functions. The hexahydrate form contains six water molecules per magnesium chloride unit, enhancing dissolution and potential absorption.

Origin & History

Magnesium chloride hexahydrate (MgCl₂·6H₂O) is a white, crystalline inorganic salt composed of magnesium chloride bound to six water molecules. It is produced industrially from magnesium-rich sources like seawater, brines, or minerals such as bischofite through evaporation, crystallization, and purification processes.

Historical & Cultural Context

No historical or traditional medicinal uses for magnesium chloride hexahydrate were documented in the research dossier.

Health Benefits

• No clinical health benefits documented - No human clinical trials or RCTs were found in the research dossier
• Potential magnesium supplementation - As a source of magnesium ions (Mg²⁺), though no specific evidence provided
• High water solubility - May offer good absorption potential in aqueous formulations, but no clinical data available
• Pharmaceutical grade purity - Meets Ph. Eur., BP, FCC standards with ≥99% purity
• No evidence-based therapeutic claims - Research dossier contains no clinical efficacy data

How It Works

Magnesium chloride hexahydrate dissociates in aqueous solutions to release magnesium ions (Mg²⁺) and chloride ions (Cl⁻). The released magnesium ions serve as cofactors for over 300 enzymatic reactions, including ATP synthesis, protein synthesis, and calcium channel regulation. The hexahydrate crystalline structure with six bound water molecules facilitates rapid dissolution and ionization in biological fluids.

Scientific Research

No human clinical trials, randomized controlled trials, or meta-analyses were found in the research dossier for magnesium chloride hexahydrate. No PubMed PMIDs are available for clinical studies on this specific compound.

Clinical Summary

No human clinical trials or randomized controlled trials specifically investigating magnesium chloride hexahydrate have been documented in current research databases. While the compound theoretically provides magnesium supplementation through highly bioavailable Mg²⁺ ions, no clinical evidence supports specific health benefits or efficacy claims. The lack of clinical data represents a significant evidence gap for this particular magnesium form. Research on other magnesium compounds cannot be directly extrapolated to magnesium chloride hexahydrate without specific comparative studies.

Nutritional Profile

Magnesium Chloride Hexahydrate (MgCl₂·6H₂O) is a pure inorganic mineral salt with a molecular weight of 203.30 g/mol. Elemental composition: Magnesium (Mg²⁺) content approximately 11.96% by weight (meaning a 1g dose delivers ~120mg elemental magnesium), Chloride (Cl⁻) approximately 34.9% by weight, and water of crystallization approximately 53.2% by weight. Contains no macronutrients (zero protein, fat, or carbohydrates), no dietary fiber, no vitamins, and no organic bioactive compounds. As a mineral source, the sole nutritional contributor is elemental magnesium. Bioavailability notes: Magnesium chloride dissociates readily in aqueous solution into free Mg²⁺ and Cl⁻ ions; the chloride salt form is generally considered to have higher solubility and potentially superior bioavailability compared to less soluble forms such as magnesium oxide (~4% absorption) or magnesium hydroxide. Ionic magnesium absorption occurs primarily in the small intestine via active transport (TRPM6/TRPM7 channels) and passive paracellular diffusion; absorption efficiency is approximately 30–50% under normal physiological conditions but is dose-dependent and decreases at higher intakes. No calories, no organic phytonutrients, no antioxidants, and no fiber content. Chloride ions contribute to normal gastric acid production and electrolyte balance but are not considered a nutritional limitation in typical supplemental doses.

Preparation & Dosage

No clinically studied dosage ranges are available as no clinical trials were found in the research. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

No synergistic ingredients documented in research

Safety & Interactions

Safety data specific to magnesium chloride hexahydrate supplementation is limited due to lack of clinical studies. General magnesium supplementation may cause gastrointestinal effects including diarrhea, nausea, and abdominal cramping, particularly at doses exceeding 350mg elemental magnesium daily. Magnesium can interact with antibiotics (tetracyclines, quinolones), bisphosphonates, and diuretics by affecting absorption or excretion. Individuals with kidney disease should avoid magnesium supplementation without medical supervision due to impaired renal magnesium clearance.