Peptidchem supplies high-purity Magnesium Oxide Powder (MgO) for dietary supplements, functional foods. Our factory provides Food Grade, USP, FCC, BP, and customized specifications, supporting global brands, contract manufacturers, and ingredient distributors with stable quality and export documentation.
With professional manufacturing, strict quality control, and flexible packaging from 25kg to 100kg, Peptidchem offers reliable bulk magnesium oxide solutions for capsules, tablets, powders, sachets, and mineral premixes.
Magnesium Oxide contains one of the highest percentages of elemental magnesium (about 60.3%) among common magnesium salts.
Magnesium Oxide Powder Manufacturing Process Flow

Magnesium Oxide Powder Specification
Bulk Magnesium Oxide Supplements Powder Manufacturer, USP/FCC food grade, OEM & private label support, COA, and worldwide export.
| Test Item | Specification |
| Appearance | White fine powder |
| Identification | Positive |
| Assay (MgO, ignited basis) | 96.0–100.5% |
| Elemental Magnesium | Approximately 60% |
| Loss on Ignition | ≤10.0% |
| Free Alkali | Passes USP |
| Soluble Salts | ≤10 mg |
| Acid Insoluble Substances | ≤2 mg |
| Calcium | ≤1.1% |
| Iron | ≤0.05% |
| Lead | ≤0.1 ppm (typical) |
| Heavy Metals | Complies with USP/FCC |
| Particle Size | 100% through 80 mesh (customizable) |
| Bulk Density | Light: ~0.23 g/mL; Heavy: customizable |
| pH (1% suspension) | 9.0–11.0 |
Magnesium Oxide Powder to Supplements Formulation
Magnesium Oxide is commonly used in capsules, tablets, powdered drink mixes, and multivitamin formulas because of its high elemental magnesium content. A 400 mg serving of Magnesium Oxide provides approximately 240 mg elemental magnesium.
Standard Magnesium Capsule
| Ingredient | Amount |
| Magnesium Oxide | 400 mg |
| Silicon Dioxide | 5 mg |
| Magnesium Stearate | 5 mg |
| HPMC Capsule | Size 00 |
High-Strength Magnesium Capsule
| Ingredient | Amount |
| Magnesium Oxide | 500 mg |
| Microcrystalline Cellulose | 60 mg |
| Silicon Dioxide | 5 mg |
| Magnesium Stearate | 5 mg |
| HPMC Capsule | Size 00 |
Magnesium Oxide vs Other Magnesium Forms
| Magnesium Form | Elemental Mg | Use |
| Magnesium Oxide | ~60.3% | Mineral supplements |
| Magnesium Citrate | ~16% | Daily supplementation |
| Magnesium Glycinate | ~14% | Premium formulations |
| Magnesium Malate | ~15% | Sports nutrition |
| Magnesium Acetyl Taurate | ~9% | Specialty formulas |
| Magnesium L-Threonate | ~7% | Cognitive formulations |
Why Choose Peptidchem?
1. Free sample available: Magnesium Oxide Powder Suppliers 10-30g samples could be offered for your R&D trial. Qty: 1ton, Delivery method: FOB/CIF.
2. Quality and Purity: Contract Supplements Manufacturer ensures that their Heavy Magnesium Oxide is of the highest quality and purity. They often use third-party testing and provide a Certificate of Analysis (COA) to guarantee the product’s safety and efficacy.
3. Our Certificates: Over the years, we have been committed to product manufacture optimization and quality system establishment. We’ve set up the quality management system and obtained certificates for it. We provide ISO9001, Halal, Kosher, etc.
4. Customized Bulk Supply
We support:
Small trial orders
Bulk container supply
Private label manufacturers
Ingredient distributors
5. Global Export Capability
Markets served:
USA
Europe
Australia
Canada
Middle East
Asia-Pacific
Peptidchem can supply bulk Magnesium Oxide Powder with customized active specifications, formulation support, COA documentation, and export-ready quality systems. Contact us today!
