calcium citrate vitamin d3 tablets OEM Manufacturer

1. Why choose calcium citrate over calcium carbonate?

Absorption independent of stomach acid: Calcium carbonate requires sufficient stomach acid to dissolve, whereas calcium citrate dissolves efficiently across a wide range of conditions. This allows consumers to take it either on an empty stomach or with meals.

Higher bioavailability: Clinical studies demonstrate that calcium citrate has a significantly better absorption rate than calcium carbonate, resulting in superior utilization within the body.

Gentle on the gastrointestinal tract: Common consumer complaints regarding traditional calcium supplements include bloating, gas, and constipation. Calcium citrate significantly reduces these gastrointestinal side effects, thereby enhancing customer retention and brand loyalty.

Suitable for sensitive populations: Calcium citrate is the preferred form of calcium for the elderly (whose stomach acid secretion decreases with age) and for individuals taking acid-reducing medications (such as proton pump inhibitors/PPIs).

2. The Synergistic Role of Vitamin D3 (Cholecalciferol)

Calcium cannot function in isolation. Without adequate Vitamin D3, the body cannot synthesize calbindin—a protein essential for intestinal calcium absorption.

Our tablets are fortified with high-quality Vitamin D3 (cholecalciferol), a bio-identical form structurally identical to the Vitamin D naturally produced by the body upon sun exposure. Research confirms it is more effective at raising serum Vitamin D levels than plant-derived Vitamin D2 (ergocalciferol).

Synergistic Formulation: By combining calcium citrate and Vitamin D3 in a single tablet, we provide an all-in-one solution that maximizes calcium delivery into the bloodstream, effectively supporting bone density and mineralization.

While capsules and liquids have their niche, the Tablet (Caplet) format remains the global standard for calcium delivery due to structural and manufacturing advantages:

Calcium is a bulky mineral. Achieving effective therapeutic dosages requires a delivery system that can handle high-density compaction. Tablets allow formulators to maximize the active ingredient per serving, reducing the overall pill count for the consumer.

To optimize the user experience on mobile-first review platforms, our manufacturing process utilizes an ultra-smooth, plant-based enteric or film coating. This delivers two major benefits:

Easy Swallowability: Eliminates the "chalky" texture commonly associated with mineral tablets.

Moisture Barrier: Protects the active ingredients from degradation, ensuring an extended and stable shelf-life.

Contract Manufacturing Specifications

We support global brand owners with premium contract manufacturing and private label solutions that meet rigorous Western regulatory standards (FDA cGMP, NSF, and EFSA compliant):

Expand your bone health product line with a trusted partner.

Are you ready to enhance your portfolio with "Calcium Citrate + Vitamin D3" tablets—a high-bioavailability product that is ready for immediate retail launch? As an experienced export partner, we offer a fully transparent supply chain, certified high-quality ingredients, and rigorous quality control across every batch.

OWN Brand

Intergroup is supplying OEM service for the Well-known brands Reson and Ausreson. Alibaba International Station No.1 supplier, Alibaba International Station Number 1, Alibaba International Station Number one Customized logo is welcome, Packing as your requirement. offering private label

Cusrom Process

01 Contact us 02 Confirm Product Formula 03 Sample Confirmation 04 Deposit Payment 05 Factory Production 06 Product Quallty Inspectlon 07 Balance Payment 08 Dispatch and Delvery

Factory & Exhibition

Private Label design, fast delivery, USA Warehouse, European Warehouse, capsules factory,Softgels factory,tablets factory, pills factory, Gummies factory, Liquid Drops factory,Gum factory,solid beverage factory, customized factory, capsules manufacturer, Softgels manufacturer, tablets manufacturer, pills manufacturer, Gummies manufacturer, Liquid Drops manufacturer,Gum manufacturer,solid beverage manufacturer.

In order to better serve our global customers, we will participate in various large-scale exhibitions.Europe, North America

Certifications

We are a nutritional supplement raw material and nutritional supplement brand OEM manufacturing factory in China with ISO 22000, ISO 9001, HACCP Management certifications, GMP certificate the factory, HALAL, CE, CE-ROHS, Organic, KOSHER, NSF Product certifications.Our product's comprehensive certification standards.

Packaging

We promise to provide high-quality products, but please raise any quality issues within 15 days of receiving the package.

From concept to finished product, we are committed to quality, efficiency, and customer satisfaction. Let us help you bring your product to life!

FAQs

Q: What kind of OEM forms can you supply ?
A: Pre mix powder, Capsules, Tablets, pills, Softgel,drops, Gummy.

Q: What's the pill size?
A: Capsule: 2#,1#,0#, 00#. Tablet: Can customize like 500mg, 1000mg, 1500mg, 2000mg

Q: What are capsule shells made of ?
A: Gelatin,HPMC (Vegan), Enteric gelatin & enteric vegan shells.

Q: Can the formula be customized by our Own Formula?
A: Yes, The formula can be exact customized.

Q: Minimum Order Quantity (MOQ) ?
A: Small quantity sample can be customized according to your requirements. Official order MOQ: 100,000 pieces

Q: Can you supply bottles with private label?
A: Yes, all can be customized.

Q: What kind of certificates can you supply for your OEM capsules / Tablets?
A: Health certificate, Original certificate.