Magnesium Oxide Powder Supplier in China
99% Pure Ingredient, Bulk Wholesale 25kg/drum & OEM with Kosher, Halal, FDA-approved
Home / Products / Specialty Ingredients / Wholesale Magnesium Oxide Powder
What is Magnesium Oxide?
Magnesium Oxide (MgO), also known as Magnesia, is an inorganic compound and the Most Concentrated Form of Magnesium, delivering the Highest Elemental Magnesium Content at around 60%. With the molecular formula MgO, molecular weight 40.30 g/mol, and CAS number 1309-48-4, it appears as a fine white, odorless powder with excellent stability, making it the Most Stable Form among magnesium supplements. ProVita Biotech offers Pharmaceutical Grade Magnesium Oxide with 99% purity, packaged securely in 25kg/drum for bulk buyers worldwide. While magnesium does not have botanical sources, MgO is produced industrially and is sometimes enhanced as ozonated magnesium oxide for oxygen-releasing applications. Known for its Best Cost-Effectiveness and versatility, pure Magnesium Oxide is widely used in antacids, laxatives, dietary supplements, and fortified foods, making it the Most Commonly Used in Antacids & Laxatives across global markets. With relatively lower bioavailability compared to chelated forms, its high concentration and multifunctional benefits make it a preferred choice in both nutraceutical and pharmaceutical applications. As the leading bulk Magnesium Oxide powder supplier in China, ProVita Biotech delivers consistent quality and also provides OEM services for capsules, tablets, and private label formulations to meet international customer needs.
Magnesium Oxide vs Magnesium Glycinate
Magnesium Oxide (MgO) is the Most Concentrated Form of Magnesium, offering the Highest Elemental Magnesium Content (60%), excellent cost-effectiveness, and the Most Stable Form for bulk supplements, antacids, and laxatives. However, its bioavailability is relatively lower compared to chelated forms.
Magnesium Glycinate, a chelated form of magnesium bound to the amino acid glycine, provides much higher bioavailability and is gentler on the stomach, making it ideal for nutraceuticals targeting stress, sleep, and neurological support. However, it is more expensive and contains less elemental magnesium.
- Best for bulk manufacturing, high concentration, and cost savings, choose Magnesium Oxide
- Best for absorption, premium supplements, and sensitive consumers, choose Magnesium Glycinate
| Feature | Magnesium Oxide (MgO) | Magnesium Glycinate |
|---|---|---|
| CAS Number | 1309-48-4 | 14783-68-7 |
| Other Names | Magnesia, Ozonated Magnesium Oxide | Magnesium bisglycinate, Mg-glycinate |
| Molecular Formula | MgO | C4H8MgN2O4 |
| Molecular Weight | 40.30 g/mol | 172.43 g/mol |
| Appearance | White, odorless powder | White crystalline or powder |
| Food Sources | Not naturally occurring in foods (industrial production) | Found in trace amounts in protein-rich foods (via glycine) |
| Specifications | ≥ 98–99% Pharmaceutical Grade Magnesium Oxide | ≥ 98% Magnesium Glycinate |
| Purity | 99% (ProVita Biotech bulk grade) | 98%+ |
| Elemental Magnesium Content | ~60% (Most Concentrated Form of Magnesium) | ~14% |
| Bioavailability | Low (4–10%) | High (up to 70–80%) |
| Potency | Strong per gram (high elemental Mg) | Lower per gram, but highly absorbed |
| Dosage (typical) | 250–400 mg/day (higher needed for effect due to absorption) | 100–400 mg/day (lower dose effective due to better absorption) |
| Half-Life (in body) | Several hours (slow absorption) | Longer sustained absorption due to chelation |
| Stability | Most Stable Form, resistant to humidity/heat | Stable but less so than MgO |
| Popularity | Most Commonly Used in Antacids & Laxatives, supplements | Increasingly popular in premium supplements (sleep, stress, mood) |
| Pricing (bulk range) | Lowest cost: $2–5/kg (very economical) | High cost: $20–50/kg (premium pricing) |
| Main Benefits | Cost-effective, high potency, antacid/laxative use, supplement base | High absorption, gentle on stomach, supports sleep, relaxation, mood |
| Best Applications | Antacids, laxatives, fortified foods, basic supplements | Stress relief, sleep, anxiety, neurological support, premium supplements |
Magnesium Oxide vs Citrate
Magnesium Citrate, on the other hand, is a salt of magnesium and citric acid with higher absorption rates, making it a popular choice for supplements targeting digestion, constipation relief, and general magnesium replenishment. It contains much less elemental magnesium (~16%), requires larger serving sizes, and is generally more expensive than oxide.
| Feature | Magnesium Oxide (MgO) | Magnesium Citrate |
|---|---|---|
| CAS Number | 1309-48-4 | 3344-18-1 |
| Other Names | Magnesia, Ozonated Magnesium Oxide | Magnesium salt of citric acid |
| Molecular Formula | MgO | C6H6MgO7 (typically hydrated forms) |
| Molecular Weight | 40.30 g/mol | ~214.41 g/mol (anhydrous) |
| Appearance | White, odorless fine powder | White crystalline or granular powder |
| Food Sources | Not naturally in foods; produced industrially | Citric acid naturally occurs in citrus fruits (but Mg citrate is supplemental) |
| Specifications | ≥ 98–99% Pharmaceutical Grade Magnesium Oxide | ≥ 98% Magnesium Citrate |
| Purity | 99% (ProVita Biotech bulk grade) | 98%+ |
| Elemental Magnesium Content | ~60% (Most Concentrated Form) | ~16% |
| Bioavailability | Low (~4–10%) | Higher (~25–30%) |
| Potency | Very high per gram (strongest source of Mg) | Moderate (less Mg per gram, but more absorbed) |
| Dosage (typical) | 250–400 mg/day (higher to offset absorption) | 200–400 mg/day (effective at lower elemental dose) |
| Half-Life (in body) | Several hours (slower release) | Faster absorption, shorter half-time |
| Stability | Most Stable Form, excellent shelf life | Moderate stability, hygroscopic (absorbs moisture easily) |
| Popularity | Most Commonly Used in Antacids & Laxatives, fortified foods, supplements | Popular in consumer supplements, digestive health, constipation relief |
| Pricing (bulk range) | Lowest cost: $2–5/kg | Higher cost: $10–25/kg |
| Main Benefits | High Mg concentration, cost savings, stability, dual use in pharma | Better absorption, gentle laxative, supports digestion, consumer-preferred |
| Best Applications | Antacids, laxatives, fortified foods, basic magnesium supplements | Dietary supplements for general magnesium intake, gut health, constipation relief |
Magnesium Oxide Certificate of Analysis(COA)
The Certificate of Analysis for ProVita Biotech’s Magnesium Oxide Powder 99% confirms the highest quality standards for dietary supplement manufacturing. The assay (purity) result reached 100.2% (USP 96.0–100.5% standard), ensuring consistent potency and reliability. Heavy metals were strictly controlled, with lead, arsenic, cadmium, and mercury all well below USP limits, and the total heavy metals test showing <10 mg/kg, fully compliant with international safety requirements. No residual solvents were detected, and the product showed excellent stability with a 2-year shelf life. Packaged securely in 25kg drums, this Pharmaceutical Grade Magnesium Oxide meets USP standards and passes third-party quality testing. ProVita Biotech is committed to providing pure, safe, and compliant raw ingredients for supplement manufacturers and distributors worldwide, ensuring product safety and international standard compliance.
Application
Dietary Supplements
Magnesium Oxide is widely used in capsules, tablets, and powders thanks to its Highest Elemental Magnesium Content (~60%). It is the Most Concentrated Form of Magnesium, making it a cost-effective choice for supplement brands seeking potency in smaller doses.
Pharmaceuticals
As the Most Commonly Used in Antacids & Laxatives, Magnesium Oxide neutralizes stomach acid and provides gentle relief for indigestion and constipation. Its Pharmaceutical Grade Magnesium Oxide ensures safety, stability, and consistent therapeutic effects.
Food Fortification
In the food industry, Magnesium Oxide is valued for its stability and high magnesium content, making it an excellent fortifying agent in beverages, cereals, and nutritional products. It delivers essential magnesium while maintaining product quality and shelf life.
Magnesium Oxide Manufacturing Process
At ProVita Biotech, the production of Magnesium Oxide Powder 99% follows a strict USP-standardized manufacturing process, ensuring purity, stability, and international compliance.
Raw Material Procurement – The process begins with purchasing high-quality magnesium hydroxide, which is inspected for appearance and quality. Any nonconforming material is returned immediately.
Sampling & Incoming Inspection – Each batch undergoes sampling inspection to ensure compliance with specifications before being accepted into production.
Calcination – The raw magnesium hydroxide is conveyed to high-temperature calcination, where it is thermally decomposed to produce pure magnesium oxide (MgO) with high elemental content.
Screening & Separation – After calcination, the material is subjected to vibrating screening and magnetic separation to remove any impurities or foreign bodies, ensuring the Most Stable Form of magnesium oxide.
Quantitative Packaging – The purified powder is weighed, disinfected, and filled into 25kg food-grade fiber drums or bags under controlled conditions. Additional steps like metal detection, sealing, and foreign body collection guarantee product safety.
Quality Control & Testing – Rigorous in-process testing and third-party COA verification confirm assay/purity levels at 99%, with heavy metals, residual solvents, and contaminants far below international limits.
Warehousing & Shipment – Only after passing final quality judgment are the drums moved into certified storage. The final bulk Magnesium Oxide Powder 99% is then prepared for global distribution, including OEM capsules, tablets, and custom formulations.
Magnesium Oxide Benefits
- Magnesium Oxide for Constipation*: Helps relieve occasional constipation by drawing water into the intestines to promote regularity.
- Magnesium Oxide for Sleep*: Supports relaxation of muscles and nerves to help improve sleep quality and nighttime calm.
- Magnesium Oxide for Headaches*: Helps maintain normal electrolyte balance and muscle relaxation, supporting relief of occasional tension headaches.
- SUPPORTS ENERGY PRODUCTION*: Required cofactor for an estimated 300 enzymes.* Involved in fatty acid synthesis, protein synthesis, and glucose metabolism.*
- CRITICAL FOR ENZYME FUNCTION*: Adequate magnesium status supports healthy calcium balance through effects on the parathyroid gland.*
- Muscle & Nerve Function*: MgO helps sustain normal neuromuscular function, reducing occasional cramps and twitching.
- Heart & Blood Pressure Support*: Contributes to normal heart rhythm and helps maintain healthy blood pressure already within the normal range.
- Bone Health Synergy*: Works with calcium and vitamin D to support strong bones and teeth.
- High-Potency, Cost-Effective: Magnesium Oxide (MgO) provides the highest elemental magnesium content per gram for efficient, budget-friendly formulations.
*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.
Where to buy bulk Magnesium Oxide Powder?
If you are looking for where to buy bulk Magnesium Oxide powder, ProVita Biotech Co., Ltd. is your trusted partner. As a leading Magnesium Oxide factory and supplier in China, we provide high-quality Magnesium Oxide bulk powder at competitive prices, backed by GMP, Kosher, and Halal certificates. Every batch undergoes third-party testing to ensure consistent purity, safety, and compliance with international standards.
We offer a wide range of Magnesium Oxide forms, including pure Magnesium Oxide powder, Magnesium Oxide liquid, organic Magnesium Oxide, Ozonated Magnesium Oxide, Oxygenated Magnesium, Magnesium peroxide (MgO₂) blends, and even custom formats such as Magnesium Oxide gummies, capsules, and tablets. With flexible packaging options like 25kg drums and OEM/private label services, ProVita Biotech supports supplement brands, distributors, and manufacturers worldwide.
Whether you need magnesium oxide bulk density specifications, wholesale magnesium oxide for sale, or want the best Magnesium Oxide bulk price, our China factory can meet your needs with reliable supply and professional support. Contact us today for a free sample and get the latest high-quality Magnesium Oxide price from one of the most trusted magnesium oxide manufacturers in the industry.
FAQs
Magnesium Oxide offers the highest elemental magnesium content (~60%) and the best cost-effectiveness, making it ideal for bulk supplements. Magnesium Glycinate, although lower in elemental content, has higher bioavailability and is often chosen for premium formulations.
Magnesium Oxide is the most concentrated and stable form of magnesium, widely used in antacids and laxatives, as well as supplements. Magnesium Citrate has better absorption but contains only about 16% elemental magnesium, making it more suitable for consumer-friendly digestive support products.
Each form serves different needs: Magnesium Oxide is best for bulk pricing, stability, and potency; Magnesium Citrate is valued for higher absorption and digestive support; and Magnesium Glycinate is used in premium, gentle formulations for sleep, stress, and neurological health.
We produce Pharmaceutical Grade Magnesium Oxide through a controlled calcination process of magnesium hydroxide, followed by screening, magnetic separation, metal detection, and packaging in 25kg drums. Every batch undergoes strict third-party quality testing to ensure 99% purity and compliance with USP, GMP, Kosher, and Halal standards.
Our standard MOQ begins at 25kg (one drum) for pilot testing, with scalable bulk supply available by tonnage for supplement manufacturers, contract formulators, and distributors.
Typical lead time is 7-15 working days depending on order size and customization. For OEM capsules, tablets, or gummies, additional time may be required for formulation and packaging.
Standard packaging is 25kg fiber drums or bags, with customized packaging available upon request for OEM and private label projects.
We supply COA, ISO, GMP, Halal, and Kosher certificates, and full third-party lab testing to guarantee international compliance and buyer confidence.
Yes. ProVita Biotech provides OEM solutions, including capsules, tablets, powders, and gummies, along with formulation and branding support for supplement companies.
Yes. We supply Magnesium Oxide worldwide, including the United States, Canada, UK, Europe, and Asia, with reliable logistics and flexible shipping terms.
Pricing depends on order size, specifications, and form (powder, liquid, or blends). As a direct China factory, ProVita Biotech guarantees the most competitive magnesium oxide bulk price in the market.