Calcium L-threonate powder
Function: Nutritional Enhancer,Calcium supplements
Shipping speed:1-3 days
Inventory:In stock
Certificates:FSSC22000, HALAL, KOSHER, ISO9001, ISO22000, FDA
MOQ:25KG
Package:25Kg/barrel
Sales group:not for individual customers
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Product Introduction
YTBIO:Supplier of High-quality Calcium L-threonate
Calcium L-threonate powder is an organic calcium compound with excellent water solubility, good thermal stability, and resistance to acids and alkalis. Unlike traditional calcium supplements, it primarily relies on passive diffusion through the intestinal mucosa for unsaturated absorption, with the amount of calcium absorbed being directly proportional to the intake. Once in the bloodstream, L-Threonate calcium exists mainly in a small molecule form, significantly prolonging the metabolic time of calcium in the body and allowing blood calcium to participate more fully in bone metabolism, thereby improving bioavailability. Furthermore, its carrier component, L-Threonic acid, is naturally found in plants and human gastric acid and is a degradation product of vitamin C. Therefore, L-Threonate calcium can simultaneously promote vitamin C absorption and prolong its duration of action. Experiments have confirmed that L-Threonate calcium can significantly increase bone calcium content and bone density, enhance bone strength, and effectively reverse the body's negative calcium balance.

YTBIO supplies L-Threonate calcium with a purity of 98%. We are committed to providing you with stable and controllable calcium raw material support, which can be used in calcium supplements, osteoporosis adjuvant products, and vitamin C synergistic formulations, supporting the development of various dosage forms such as tablets, capsules, and oral liquids.
Why Choose YTBIO's L-Threonate Calcium?
1. YTBIO's 98% high-purity raw materials are particularly suitable for developing high-concentration calcium supplements, osteoporosis adjuvant products, and post-operative rehabilitation formulas, exhibiting stability in liquid calcium, effervescent tablets, and oral solutions.
2. We employ a targeted synthesis route, effectively controlling the impurity profile, resulting in clear aqueous solutions free of precipitation and flocculation. Each batch of product undergoes tests for dissolution rate, thermal stability, and pH tolerance to ensure consistent quality.
3. We own our factory, and all production processes strictly adhere to international certification systems such as cGMP, FSSC22000, BRC, HALAL, KOSHER, ISO9001, and ISO22000. Batch COA, MSDS, and other documentation are provided with the order.
4. Flexible minimum order quantities, supporting multi-batch comparative testing. Customized packaging is available (1kg, 5kg, 25kg, drums). Regular orders take 3-5 business days; expedited processing can be arranged for urgent orders.
COA of Calcium L-threonate Powder:
Test Items | Test Standard | Test Result | Test Method |
Character | White or almost white powder | White powder | USP NF 2024 |
Loss on drying | ≤1.5% | 0.6% | USP NF 2024 <731> |
Calcium L-threonate (Assay) | ≥98.0% | 99.2% | Titration |
Specific rotation | +13.0° ~ +16.0° | +14.5° | USP NF 2024 <781> |
Water insoluble | ≤0.1% | <0.1% | USP NF 2024 |
pH | 6.0 ~ 8.0 | 7.89 | GB/T 9724 |
Lead (Pb) | ≤2 ppm | <2 ppm | USP NF 2024 <251> |
Arsenic (As) | ≤3 ppm | <3 ppm | USP NF 2024 <211> |
Iron (Fe) | ≤100 ppm | <100 ppm | USP NF 2024 <241> |
Cadmium (Cd) | ≤1 ppm | <1 ppm | USP NF 2024 <231> |
Mercury (Hg) | ≤0.5 ppm | <0.5 ppm | USP NF 2024 <261> |
Total Plate Count | ≤1000 cfu/g | <1000 cfu/g | USP NF 2024 <2021>/<2022> |
Total Yeast & Mold | ≤100 cfu/g | <100 cfu/g | USP NF 2024 <2021>/<2022> |
Staphylococcus aureus | Negative | Negative | USP NF 2024 <2021>/<2022> |
Escherichia coli | Negative | Negative | USP NF 2024 <2021>/<2022> |
Salmonella | Negative | Negative | USP NF 2024 <2021>/<2022> |
Bulk Density | 0.2 g/mL ~ 0.4 g/mL | 0.27 g/mL | USP NF 2024 <616> |
Tap Density | 0.45 g/mL ~ 0.70 g/mL | 0.50 g/mL | USP NF 2024 <616> |
Conclusion | This batch of product complies with the specifications | ||
Storage | Store in a cool, dry, well-ventilated place. Keep away from strong light, heat and direct moisture. Keep the container tightly closed after use. | ||
Packaging | 25kg per drum, with double-layer food-grade plastic bags inside and fiber drums outside (or as per customer's requirements). | ||
Shelf Life | 24 months when stored under the specified conditions and in original unopened packaging. | ||
What are the Advantages of Calcium L-threonate Compared to Other Calciums?
The body's effective utilization of calcium depends not only on the amount of calcium ingested, but more importantly on the absorption properties of the supplemented calcium.
Most commercially available calcium supplements are ionic calcium. This type of calcium needs to dissociate into free calcium ions under the action of stomach acid, and then enter the intestines to bind with calcium-binding proteins before being absorbed by the body. However, stomach acid secretion capacity has an upper limit, and the residence time of calcium in the gastrointestinal tract is also relatively limited, resulting in a large amount of unabsorbed calcium being excreted. This is why many people still suffer from calcium deficiency despite long-term calcium supplementation.
Unlike traditional ionic calcium, Calcium L-threonate powder is absorbed by the body in molecular form through the gastrointestinal tract. This process does not rely on stomach acid for dissociation, does not increase the burden on the gastrointestinal tract, and has no obvious toxic side effects, meeting the body's daily calcium needs in a gentle and efficient manner. As a high-quality calcium supplement ingredient, L-threonate calcium provides a superior solution for improving calcium nutrition.Medical experiments have confirmed that L-threonate calcium has an absorption rate of up to 95%. Its molecules enter the blood plasma directly through passive diffusion, significantly increasing the proportion of small-molecule calcium in total calcium, prolonging the metabolic time of calcium in the body, and giving blood calcium more opportunities to exchange with bones, thereby significantly improving bioavailability.
Benefits of L-Threonate Calcium Supplementation
Highly Effective Calcium Supplementation for Bone Health
The biggest advantage of L-Threonate Calcium is its high absorption rate. Even with insufficient vitamin D levels, the intestines can effectively absorb it. It has minimal gastrointestinal irritation, and long-term use is unlikely to cause discomfort. Therefore, for individuals with poor calcium absorption, such as growing children, pregnant women, and the elderly with impaired digestive function, it can reliably meet daily calcium needs and help prevent or improve osteoporosis and delayed bone development.
Potential Benefits for the Nervous System
Some studies suggest that L-Threonate Calcium helps maintain stable calcium signaling within nerve cells, thereby supporting normal nervous system function.Because Ca2+ is essential for the normal function of the central nervous system. As a second messenger in multiple signaling pathways, it regulates synaptic transmission and modulates synaptic plasticity, which are crucial for neural communication, learning, and memory. Maintaining calcium homeostasis is essential for normal neuronal function, and any dysregulation of its signal transduction can lead to significant alterations in neural processes.

The role of calcium ions in the physiology of the central nervous system(Source: https://doi.org/10.3390/ijms252313133)
Potential Antioxidant Potential
As a vitamin C derivative, L-Threonate Calcium may structurally participate in scavenging free radicals in the body, reducing the impact of oxidative damage on cells. This effect is currently mainly at the research level, but in the long term, providing the body with additional antioxidant support is beneficial.
What are the Main Applications of Calcium L-threonate?
Calcium L-threonate powder has wide applications in various industries, primarily including food and pharmaceuticals.
1. Food Industry
Daily Food Fortification: Can be added to dairy products, beverages, baked goods, etc., to increase calcium content and nutritional value.
Special Population Foods: Suitable for infants, pregnant women, the elderly, and other groups with high calcium requirements or sensitive gastrointestinal systems.
2. Pharmaceuticals and Healthcare
Calcium Supplements: Used for the prevention and treatment of osteoporosis, rickets, hypocalcemia, etc.
Child Development: Promotes bone growth in children and prevents developmental delays.
Nutritional Support During Pregnancy and Lactation: Relieves discomfort such as leg cramps and backaches.
Vitamin C Synergistic Effect: Helps improve the absorption and utilization rate of vitamin C.
3. Cosmetics (Limited Application)
Used as a nutritional additive in some mid-to-high-end cosmetics to help maintain skin health and promote cell metabolism and repair.
Recommended Addition Amount (for reference only)
| Category | Recommended Addition Amount (g/kg) |
| Fermented dough products | 0.2 |
| Carbonated beverages, tea drinks, fruit juice drinks, etc. | 0.5 |
| Milk powder | 0.3–1.0 |
| Beer | 0.04 |
| Jelly | 0.12–0.24 |
| Ready-to-eat breakfast cereals | 0.3–0.75 |
Note: The above values are suggested ranges and should be adjusted according to product formulation, target population and regulatory standards.
Calcium L-threonate Supplier
Yuantai Organic Bio is committed to providing customers with the highest-quality Calcium L-threonate powder and services so that every consumer can enjoy natural, healthy, and high-quality food. 
If you are interested in YTBIO's Calcium L-threonate powder or other raw materials, please feel free to contact us via online consultation or by email. We will provide you with professional technical support and customized solutions.
Tel:86-029-86478251 / 86-029-86119593
Whatsapp:8617782577059
Email:sales@sxytorganic.com
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