Magnesium Chloride USP Grade (Hexahydrate)
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- $ 19.99
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99.9% Pure Dead Sea Magnesium Chloride Powder – USP Grade, 100% Edible, Ideal for Oral Use & Magnesium Oil
- USP Grade Magnesium Chloride Hexahydrate (MgCl₂·6H₂O) from the Dead Sea
- 100% edible magnesium chloride powder for oral solution & topical magnesium oil
- Repackaged and third-party lab tested in our FDA-registered facility in California
With so many magnesium supplements on the market, it can be hard to know what actually makes a difference. Magnesium Chloride USP Grade is one of the most versatile, highly absorbable ways to support your daily magnesium intake – ideal for both oral use and topical magnesium oil.
Our Magnesium Chloride is refined from mineral-rich Dead Sea brine and meets USP (United States Pharmacopeia) standards for purity and quality. It is 99.9% pure and 100% edible, making it a clean, reliable option for anyone looking to support sleep, relaxation, muscle comfort, and overall wellness.
- 99.9% pure Magnesium Chloride Hexahydrate (MgCl₂·6H₂O), USP Grade
- Sourced from the Dead Sea and third-party lab tested
- 100% edible – suitable for oral and topical use
- Dissolves quickly and clearly in water
- Free from fillers, anti-caking agents, and artificial additives
What Is Magnesium Chloride Hexahydrate?
Magnesium Chloride (MgCl₂) is an inorganic salt composed of magnesium and chloride ions. In its hexahydrate form (MgCl₂·6H₂O), each unit is associated with six water molecules, which makes it highly soluble and easy to work with in solution.
USP Grade vs Food Grade Magnesium Chloride
This product is USP Grade, which means it meets strict pharmacopeial standards for identity, purity, and quality. USP Grade requirements are generally more stringent than typical food-grade standards.
- Higher purity specifications and tighter impurity limits
- 99.9% purity for our Magnesium Chloride USP
- Batch testing for heavy metals and contaminants
- Suitable for both internal consumption and topical formulations
Premium Magnesium from the Dead Sea
Our Magnesium Chloride is refined from the mineral-dense waters of the Dead Sea, a unique inland salt lake long known for its high magnesium content and wellness traditions.
- Mineral-Rich Origin: Dead Sea brines are naturally high in magnesium and other minerals.
- Carefully Refined: The raw material is purified and standardized to USP specifications.
- Third-Party Tested: Each batch is lab tested for heavy metals and impurity levels.
- Consistent Quality: Same source, same specifications, batch after batch.
Why Choose Greenway Biotech Magnesium Chloride USP?
🌊 Dead Sea Source
Refined from mineral-rich Dead Sea brines, known for high natural magnesium content.
⚗️ USP Pharmaceutical Grade
Meets USP standards and is 99.9% pure Magnesium Chloride Hexahydrate.
🍽️ 100% Edible
Suitable for oral magnesium solutions as well as topical applications.
💧 Ideal for Magnesium Oil
Dissolves quickly to create clear, smooth magnesium oil and foot soaks.
🧪 Lab Tested
Each batch is third-party tested and screened for heavy metals and impurities.
🇺🇸 FDA-Registered Facility
Repackaged in our FDA-registered facility in Madera, California with quality checks at every step.
Magnesium Chloride vs Other Forms of Magnesium
Different forms of magnesium can behave differently in the body. Here's a general overview of how Magnesium Chloride compares to other common forms:
| Form | Typical Use | General Tolerance | Notes |
|---|---|---|---|
| Magnesium Chloride (USP, Hexahydrate) | Oral solutions, magnesium oil, foot soaks | Generally gentle when dosed appropriately | Highly soluble; versatile for oral and topical use |
| Magnesium Citrate | Oral supplements, occasional laxative | Commonly well tolerated | Often used for digestive support; can loosen stools |
| Magnesium Glycinate | Capsules for relaxation & sleep support | Generally gentle | Amino acid chelate; popular for sensitive digestion |
| Magnesium Oxide | Tablets, antacids | More likely to cause digestive upset | Less soluble; primarily used as an osmotic laxative |
| Magnesium Sulfate (Epsom Salt) | Bath soaks, limited oral use | Topically well tolerated; oral use can be strong | Traditionally used in baths; oral use often for short-term needs |
Magnesium Chloride Calculator
Use our calculator to determine the right amounts for preparing your oral solution or topical magnesium oil.
How to Use Magnesium Chloride USP
Oral Magnesium Solution (General Reference)
Follow the instructions printed on your bag. A commonly used preparation method is:
| Step | Instructions | Notes |
|---|---|---|
| 1 | Dissolve 33 grams (about 5 level teaspoons) of Magnesium Chloride USP in 1 liter of water. | Use a glass container; stir until fully dissolved. |
| 2 | Take 45 ml (about 1.5 oz) of the prepared solution once per day, or as directed. | This serving (45 ml) provides approximately 180 mg of elemental magnesium. |
- Use glass, ceramic, or food-grade plastic – avoid metal containers and utensils.
- Store the prepared solution in a glass bottle at room temperature, away from direct sunlight.
- If you have kidney disease, are pregnant, nursing, or take medications, consult your healthcare provider before use.
- Adjust serving size only under professional guidance.
Topical Magnesium Oil
Magnesium oil is simply a concentrated magnesium chloride solution used on the skin. You can make your own or try our ready-to-use Magnesium Oil Spray for convenience.
- Mix equal parts Magnesium Chloride USP powder and warm distilled water (for example, 1/2 cup each).
- Stir until completely dissolved and allow to cool.
- Transfer to a glass spray bottle.
- Spray onto arms, legs, or feet and gently massage into the skin.
For a detailed step-by-step guide, see: How to Make Magnesium Oil Using Magnesium Chloride .
Baths & Foot Soaks
- Add 1/2–1 cup of Magnesium Chloride USP to a warm bath for a relaxing soak.
- For foot baths, add 1/4–1/2 cup to a basin of warm water and soak feet for 20–30 minutes.
- For enhanced relaxation, combine with our Epsom Salt in baths.
How Magnesium Chloride May Support Your Wellness
Magnesium is involved in hundreds of biochemical reactions in the body, and many people do not meet recommended intake levels. While individual results vary, Magnesium Chloride is commonly used to support:
😴 Restful Sleep
Many users take magnesium in the evening to help unwind and support deeper, more restful sleep.
💪 Muscle Comfort
Magnesium plays a role in normal muscle contraction and relaxation and may help with occasional tension.
🧠 Relaxation & Calm
Often used as part of a routine to support a sense of calm and help the body cope with everyday stress.
🍽️ Digestive Support
The chloride component helps support normal stomach acid production, which is important for digestion.
⚡ Energy & Metabolism
Magnesium is a cofactor in ATP production and supports overall energy metabolism.
✨ Skin & Topical Use
Topical magnesium is popular for foot soaks, magnesium oil, and general skin application routines.
Magnesium Chloride USP – Frequently Asked Questions
What is Magnesium Chloride Hexahydrate?
Magnesium Chloride Hexahydrate (MgCl₂·6H₂O) is a highly soluble form of magnesium that includes six water molecules in its crystal structure. This makes it ideal for oral supplements, magnesium oil, and topical uses because it dissolves easily in water and is gentle on the digestive system.
Is this Magnesium Chloride safe to take internally?
Yes. This product is USP Grade and 100% edible, meeting pharmaceutical standards for purity and safety. USP Grade certification means it has been tested to strict pharmacopeial standards. Always follow mixing and dosing instructions and consult your healthcare provider if you have medical conditions or take medications.
What is the recommended oral magnesium chloride dose?
A common preparation is to dissolve 33 grams in 1 liter of water and take 45 ml (1.5 oz) per day, providing roughly 180 mg of elemental magnesium. This can be adjusted based on individual needs.
Read More Details
Always follow the directions on your product label. The recommended daily intake of magnesium for adults is 310–420 mg, so one 45 ml serving provides about half your daily needs. Consult with a healthcare professional to determine the appropriate dosage for your specific situation.
Can I use this to make magnesium oil at home?
Yes. To make magnesium oil, mix equal parts magnesium chloride powder and warm water, stir until dissolved, let cool, and store in a glass spray bottle. For convenience, we also offer ready-to-use Magnesium Oil Spray. See our detailed guide: How to Make Magnesium Oil.
What's the difference between magnesium oil and magnesium cream?
Magnesium oil is a concentrated water solution that absorbs quickly and feels wet initially, while magnesium cream is blended with moisturizing ingredients for a smoother, more nourishing application. Oil is best for quick absorption and larger areas, while cream is ideal for massage and targeted dry areas.
Why is Dead Sea magnesium chloride considered high quality?
Dead Sea brines are naturally rich in magnesium and minerals. Our Magnesium Chloride USP is refined from these brines to pharmaceutical standards and third-party lab tested for heavy metals and impurities, providing a clean, consistent, high-purity source.
Why should I avoid metal containers with magnesium chloride?
Magnesium chloride can react with certain metals and cause corrosion. Always use glass, ceramic, or food-grade plastic containers and utensils when mixing and storing magnesium chloride solutions.
How long does it take to notice benefits?
Many people notice improvements in sleep, muscle relaxation, or overall calm within 1–2 weeks of consistent use. Deeper magnesium repletion may take several weeks to a few months. Individual experiences vary based on baseline magnesium status and consistency of use.
How long does one liter of prepared solution last?
When prepared at 33 g per liter and taken at 45 ml per day, one liter lasts approximately 22 days. Always follow the directions on your product label.
How should I store the powder and prepared solution?
Store dry powder in a cool, dry place with the bag sealed tightly. Store prepared solution in a glass container at room temperature, away from direct sunlight. The powder is very stable when kept dry. If the solution crystallizes, warm the bottle gently in a bowl of warm water and shake until the crystals dissolve.
Can I use oral and topical magnesium together?
Yes. Many people use both oral and topical magnesium together. Transdermal absorption provides localized benefits and bypasses the digestive system. Introduce changes gradually and consult a healthcare professional if unsure about total magnesium intake.
Quality, Testing & Documentation
🏭 Manufacturing & Quality Practices
- USP Grade Magnesium Chloride Hexahydrate (MgCl₂·6H₂O)
- Originally produced in a GMP-certified manufacturing facility
- Repackaged in our FDA-registered facility in Madera, California
- Quality checked and packaged in various sizes for your convenience
🔬 Purity & Heavy Metal Testing
Our Magnesium Chloride USP is produced in a GMP-certified manufacturing facility and tested according to USP guidelines, including checks for impurities and heavy metals. We then repackage this tested material in our FDA-registered facility in Madera, California into convenient sizes while maintaining the same high-quality standards.
A Certificate of Analysis (COA) is available so you can review typical specifications and impurity limits.
View the Certificate of Analysis: Magnesium Chloride USP Certificate of Analysis .
📄 Product Documentation
Learn More About Magnesium Chloride
Educational Articles & Guides
- How to Make Magnesium Oil Using Magnesium Chloride
- The Benefits of Magnesium Chloride
- What Are the Benefits of Magnesium Oil on Feet? And How to Apply It
Related Magnesium Products
Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider before starting any new supplement regimen, especially if you are pregnant, nursing, taking medications, or have a medical condition.
