Vitamin D3 Powder & Oil Supplier from China

Product Introduction

WEHENGFOOD is a China vitamin D3 manufacturer, supplier and exporter, offering vitamin D3 (cholecalciferol) in two forms: a cold-water-dispersible powder and a high-potency oil.

What is vitamin D3? It is the form of vitamin D the human body makes in the skin under sunlight, and it is widely used to fortify foods and supplements. Many finished products pair it with calcium, magnesium or vitamin K2. Demand for vitamin D3 supplements keeps growing, and so does demand for the ingredients behind them.

Vitamin D3 Powder (CWS)

Potency: 100,000 IU/g or 500,000 IU/g
Appearance: white powder, free from foreign matter and off-odor
Disperses evenly in cold water, so it suits beverages, powdered drinks, tablets and dry blends

Vitamin D3 Oil

Potency: 1,000,000 IU/g up to 5,000,000 IU/g
Appearance: pale yellow oily liquid, free from foreign matter and off-odor
Suits softgels, oil-based drops and liquid formulas

If you need a different potency or carrier, contact us to discuss a custom specification.

Certificate of Analysis

Items	Specifications	Results	Methods
Description	White to light yellow powder, no foreign objects visible, no foreign matter and no odor.	Complies	Visual
Identification	The retention time of the principal peak conforms to that in the reference solution.	Complies	HPLC
Net Quantity	Should meet the requirements	Complies	/
Particle Size	100% pass through sieve 40 mesh; Min. 90% pass through sieve 80 mesh	100%; 99.3%	USP <786>; Ph. Eur. 2.9.12
Vitamin D3 Assay	≥100,000 IU/g	114,000 IU/g	HPLC
Loss on Drying	≤5.0%	4.4%	USP <731>; Ph. Eur. 2.2.32
Heavy Metals (as Pb)	≤10.0 ppm	Complies	USP <231> II; Ph. Eur. 2.4.8
Lead (as Pb)	≤2.0 ppm	<0.05 ppm	USP <251>; Ph. Eur. 2.4.10
Arsenic (as As)	≤2.0 ppm	<0.05 ppm	USP <211> II; Ph. Eur. 2.4.2
Cadmium (as Cd)*	≤1.0 ppm	/	USP <233>
Mercury (as Hg)*	≤0.1 ppm	/	USP <233>
Total Aerobic Microbial Count	≤1000 CFU/g	<10 CFU/g	USP <2021>
Total Moulds and Yeasts Count	≤100 CFU/g	<10 CFU/g	Ph. Eur. 2.6.12; USP <2021>
Enterobacterial	≤10 CFU/g	<10 CFU/g	Ph. Eur. 2.6.13
Escherichia coli*	n.d./10 g	/	USP <2022>
Salmonella*	n.d./25 g	/	Ph. Eur. 2.6.13
Staphylococcus aureus*	n.d./10 g	/	Ph. Eur. 2.6.13

Conclusion: Conform to USP/EP

Remarks

1. Store in a sealed, dark, and dry place (recommended storage temperature below 25°C).

2. * It is a type inspection project, and it should be tested at least once a year.

3. The products in this report are in compliance with export health standards and are for export use only.

Functions of Vitamin D3

Supports calcium absorption and bone health. This is why “calcium and vitamin D3” is one of the most common supplement pairings.
Supports normal muscle function.
Supports normal immune function.
Helps maintain adequate vitamin D status. Low vitamin D3 levels are a common concern, particularly for people with limited sun exposure, older adults and people with restricted diets. Fortification helps close the gap, since few foods contain meaningful amounts of vitamin D3.

Vitamin D3 and vitamin K2 are often combined in one formula, because both are involved in calcium metabolism. A D3 K2 magnesium blend is another popular combination, and our D3 powder and oil can be used as the vitamin D3 source in either.

Functional claims differ by country. Please check local regulations for your target market.

Applications and Uses

Dietary supplements

Vitamin D3 tablets and capsules, commonly in 1,000 IU, 2,000 IU and 5,000 IU strengths
Softgels and oil-based vitamin D3 drops
Gummies and chewables
Combination products: vitamin D3 with K2, calcium and vitamin D3, D3 K2 magnesium

Food and beverage fortification

Milk, plant-based drinks, yogurt and infant or nutritional powders
Powdered beverages and functional drinks
Cereals and bakery products

Formulation Guide

Target dose per serving	Using 100,000 IU/g powder	Using 500,000 IU/g powder	Using 1,000,000 IU/g oil
1,000 IU	10 mg	2 mg	1 mg
2,000 IU	20 mg	4 mg	2 mg
5,000 IU	50 mg	10 mg	5 mg

These are theoretical amounts at 100% potency and exclude overage. Final amounts depend on your process and stability data.

Usage Method

Powder, dry blending: add directly according to your formula and mix evenly in a blender.
Powder, wet addition: dissolve in a suitable amount of water first, then add to the product and stir evenly.
Oil: add directly and mix evenly. If crystals have formed, warm the aluminum bottle in hot water to 60°C until the product becomes a clear liquid before use.

Storage: keep in sealed packaging, in a cool, dry place at low temperature. Shelf life is 24 months.

Factory

Package

Exhibitions

FAQ

Q1: What is vitamin D3, and what forms do you supply?

Vitamin D3 (cholecalciferol, CAS 67-97-0) supports calcium absorption, bone health and normal immune function. We supply Vitamin D3 Powder (CWS) at 100,000 or 500,000 IU/g, and Vitamin D3 Oil at 1,000,000 to 5,000,000 IU/g.

Q2: Should I choose powder or oil?

Choose powder for tablets, hard capsules, gummies, granules, powdered drinks and dry blends. Choose oil for softgels, drops and liquid formulas. Tell us your dosage form and target IU, and we will recommend a grade.

Q3: How do I use and store vitamin D3?

Add the powder by dry blending, or dissolve it in water first (wet addition). Add the oil directly, and if it has crystallized, warm the bottle to 60°C until clear. Store sealed, at low temperature in a dry place. Shelf life is 24 months.