Xi'an DN Biology Co., Ltd. sells Calcium L-threonate Powder that is pure 99% of the time and bioavailable more than 95% of the time. Our factory uses modern extraction vessels and built-in concentration systems to process up to 3,000 tonnes of botanical raw materials every year.
This white crystalline powder has particles that are 80 meshes in size, which makes it easy to dissolve and work with other ingredients. Our product meets world compliance standards, such as Halal, Kosher, and FDA requirements, and is made under ISO 9001, GMP, HACCP, and FSSC 22000 certifications.
We have up to 100 tonnes of stock and can deliver within 5 to 8 business days. We can handle both bulk sales (minimum order quantity: 25 kg) and OEM/ODM customisation for uses in functional foods, dietary supplements, and clinical nutrition.
The product is a big step forward in the science of mineral supplements. This compound is different from calcium carbonate or citrate because it mixes elemental calcium with L-threonic acid, which is a natural form of Vitamin C.
The unique molecular structure solves important problems in the business. Traditional calcium salts can make your stomach hurt and make it hard to go to the toilet. They also pose the risk of hardening of soft tissues when uptake is low.
Our formula targets the deposition of bone matrix instead of the buildup of blood vessels. The threonate part sends signals that make osteoblasts work harder and bring more collagen into the body. This mechanism works in two ways to support both bone density and structural stability.
| Parameter | Specification |
|---|---|
| Product Name | Calcium L-threonate |
| Purity (Assay) | 99% min (HPLC) |
| Appearance | White crystalline powder |
| Particle Size | 80 mesh |
| CAS Number | 70753-61-6 |
| Molecular Formula | C₈H₁₄CaO₁₀ |
| Molecular Weight | 310.27 g/mol |
| Elemental Calcium Content | 12.5–13.5% |
| Water Solubility | Excellent (>95% absorption rate) |
| Heavy Metals (Pb) | <0.5 ppm |
| Microbiological (TPC) | <1000 cfu/g |
| Storage Conditions | Cool dry place, avoid light |
| Shelf Life | 24 months (unopened) |
| Packaging | 25 kg/drum (food-grade) |
| MOQ | 25 kg |
How well your mixture works depends on how well the ingredients work. Our Calcium L-threonate Powder has measured benefits that have a direct effect on how well the product works.
High Bioavailability That Doesn't Depend on Gastric Acid
The rate of absorption is over 95%, which is much higher than the 25–40% that is usual for older calcium salts. This chemical can be absorbed through both passive diffusion and active movement. Since it doesn't need stomach acid to ionise, it's great for older people whose stomachs don't work as well.
Low Gastrointestinal Irritation
The neutral pH level in water keeps the stomach pain that comes with acidic or alkaline calcium forms at bay. Your customers are more likely to follow through with clinical tests, and fewer people drop out.
Very Good Solubility in Water
The crystal structure breaks down fully in mixtures with water. This feature makes it possible for liquid supplements, quick drink mixes, and fizzing tablets to be clear, with no sedimentation or cloudiness. To meet consumer desire for honesty, you can make "clean label" products.
The Stability of Heat
Standard manufacturing methods, such as tableting, encapsulation, and spray-drying, keep the chemical purity of our powder. Batch-to-batch consistency makes sure that performance in big production runs can be predicted.
Advanced Formulations for Bone Health
Focus on preventing and treating osteoporosis in women who have gone through menopause and older people. The threonate part improves the production of type-I collagen, which is the biological framework that gives bones their tensile strength. Add vitamin D3, K2, and magnesium for full support of the bone structure.
Brain Health and Cognitive Function Products
New study looks into the role of calcium in neuronal communication. Make brain-boosting drugs for middle-aged and older people whose memories are getting worse. When combined with magnesium L-threonate, choline, and inositol, they work together to improve brain function.
Clinical Recovery and Nutrition After Surgery
For fracture healing and tissue repair, hospitals and therapy centers need calcium sources that work quickly. Our pharmaceutical-grade powder speeds up the activity of osteoblasts during key healing times. It fits right in with enteral nutrition routines.
Premium Sports Nutrition & Functional Beverages
Athletes need calcium to make their muscles tighten and for their bones to adapt to stress. Because it dissolves so easily, you can add it to clear isotonic drinks and protein shakes to make them healthier without changing the taste or texture. The 80-mesh particle size keeps the mouth from feeling rough.
Health Products for Students and Office Workers
Take into account the needs of both bone growth and brain function in young people. Put your goods where calcium supplements and nootropics meet, as this is a growing market trend in Asian cities.

The reputation of your brand rests on quality that you can count on. We use testing protocols with multiple steps that are in line with international norms.
Quality Control During the Process
For real-time measurement, our private lab uses HPLC, GC, UV-Vis spectrophotometry, and ICP-OES. To be sure of the L-isomer configuration, we check the purity (98.0–102.0%), the amount of elemental calcium, and the specific spin (+14.0° to +16.0°).
Safety & Contamination Screening
Testing for heavy metals is done according to USP <232> rules. We promise that there will be less than 0.5ppm of lead, arsenic, mercury, and cadmium. Microbiological panels show that E. coli and Salmonella are not present, with overall plate counts below 1000 cfu/g.
Portfolio of Certifications
Documentation for ISO 9001, ISO 22000, GMP, FSSC 22000, HACCP, Halal, Kosher, and FDA compliance helps you get into new markets. We offer free pre-shipment samples and reports from independent testers to prove our claims.
Traceability and Record Keeping
We keep full batch records that show how raw materials got to our combined planting base. Every package comes with a COA, an MSDS, and an allergen statement. We can help with audits and checks that happen at the factory.

Stock Availability & Fast Delivery
We keep up to 100 tonnes of stock on hand so that we can fill orders right away. After payment is confirmed, the standard wait time is 5 to 8 business days. Our export team handles DDP shipping options and a number of different transportation methods.
Custom Development of Formulations
Share the details of your goal. Our R&D team creates mixes that contain minerals, vitamins, and plant extracts. We can work with pills, tablets, powders, sachets, and liquids.
Production Capacity That Can Grow
Four 6m³ extraction vessels and three integrated concentration systems can handle projects ranging from small 25kg batches to large industrial runs weighing many tonnes. For custom orders, the wait time for production is between 7 and 15 days.
Choices for Private Label and White Label
We back labelling and packaging designs that are specific to a brand. For standard products, the smallest amount you can buy is 25 kg. Talk about bigger quantities for custom formulations and packaging that fits your needs.
Q: What kinds of health products will gain most from this ingredient?
A: It does well in two main areas. First, vitamins for middle-aged and older people that strengthen bones and improve brain function to help with memory loss and osteoporosis. Second, calcium supplements for students and office workers that help keep bones healthy and brains working well.
Q: Why is this raw material so good at working with other ingredients?
A: The 99% purity makes sure that the physicochemical qualities stay stable. It mixes well with water and can be mixed with vitamins, minerals, and nootropic extracts. Tablets, powders, and oral drinks can all be used with it. Large-scale production can be done with no changes to the recipe because each batch has the same quality.
Q: Can it be taken with magnesium, inositol, and choline to improve brain function?
A: Of course. When combined with the product, these ingredients work better together. The mix protects nerves, uses calcium better, and improves memory all at the same time. This multi-pathway method is often used in high-end formulas for bone and brain health.
Q: What proof do you give to get governmental approval?
A: There is a Certificate of Analysis, a Material Safety Data Sheet, an allergen statement, and batch production records in every package. We give you records from a third party that check for heavy metals, microbiological safety, and pesticide residues. You can get Kosher and Halal certificates if you ask for them.
Q: How should we keep the powder so that it stays stable?
A: Keep it somewhere cool and dry, out of direct sunlight. Containers that are sealed keep wetness from leaking out. The product stays fully effective for 24 months when kept in these circumstances. Stay away from places that are hotter than 30°C and have more than 60% humidity.

Ready to differentiate your product line with high-performance Calcium L-threonate Powder? Contact us at Info@dnbiology.com to discuss your specific requirements and receive a customized quotation within 24 hours.