Magnesium Chloride vs. Magnesium Hydroxide

Attribute	Magnesium Chloride	Magnesium Hydroxide
Chemical Formula	MgCl2	Mg(OH)2
Physical State	Solid	Solid
Uses	De-icing agent, dust control, food additive	Antacid, laxative
Solubility	Highly soluble in water	Insoluble in water
pH	Neutral	Basic

Introduction

Magnesium is an essential mineral that plays a crucial role in various bodily functions, including muscle and nerve function, blood sugar regulation, and bone health. Two common forms of magnesium supplements are magnesium chloride and magnesium hydroxide. While both compounds contain magnesium, they have different properties and are used for different purposes.

Chemical Composition

Magnesium chloride is a compound made up of one magnesium ion and two chloride ions. It has the chemical formula MgCl2. On the other hand, magnesium hydroxide is a compound made up of one magnesium ion and two hydroxide ions. It has the chemical formula Mg(OH)2. The difference in the composition of these two compounds gives them distinct properties and uses.

Solubility

Magnesium chloride is highly soluble in water, which means it can be easily absorbed by the body when taken orally. This makes it a popular choice for magnesium supplements. On the other hand, magnesium hydroxide is less soluble in water and has a laxative effect when taken in high doses. This property makes magnesium hydroxide a common ingredient in over-the-counter antacids and laxatives.

Acidity

Magnesium chloride is acidic in nature, which means it can help neutralize excess stomach acid and provide relief from heartburn and indigestion. On the other hand, magnesium hydroxide is a base and can help raise the pH of the stomach, making it an effective antacid. The acidity or basicity of these compounds determines their therapeutic uses.

Absorption

When it comes to absorption, magnesium chloride is more readily absorbed by the body compared to magnesium hydroxide. This is because magnesium chloride is highly soluble and can be easily broken down into its constituent ions for absorption. On the other hand, magnesium hydroxide is less soluble and may not be absorbed as efficiently, especially in high doses.

Therapeutic Uses

Magnesium chloride is commonly used as a dietary supplement to prevent or treat magnesium deficiency. It is also used topically in the form of magnesium oil for muscle relaxation and pain relief. On the other hand, magnesium hydroxide is primarily used as an antacid to relieve heartburn, indigestion, and acid reflux. It is also used as a laxative to relieve constipation.

Side Effects

Both magnesium chloride and magnesium hydroxide can cause side effects when taken in high doses. Magnesium chloride may cause diarrhea, nausea, and abdominal cramping. On the other hand, magnesium hydroxide may cause diarrhea, stomach cramps, and dehydration. It is important to follow the recommended dosage guidelines when taking these supplements to avoid adverse effects.

Conclusion

In conclusion, magnesium chloride and magnesium hydroxide are two common forms of magnesium supplements with distinct properties and uses. While magnesium chloride is more soluble and readily absorbed, magnesium hydroxide has a laxative effect and is commonly used as an antacid. Both compounds have therapeutic benefits but may also cause side effects when taken in high doses. It is important to consult a healthcare provider before starting any magnesium supplement regimen to ensure safe and effective use.