Vitamin U Powder

Vitamin U Powder Supplier:

Guanjie Biotech is a professional bulk Vitamin U powder supplier for over 20 years. Our Vitamin U is available with purity levels up to 99%, which is a fine white crystalline powder. It has a distinctive, strong odor and is hygroscopic, meaning it readily absorbs moisture from the air. These characteristics make it important to store the product properly for optimal performance. Vitamin U is sensitive to both light and heat, so careful handling and packaging are essential to preserve its potency and functional benefits. Our advanced production process ensures the stability and consistency of each batch, while our rigorous quality control procedures guarantee exceptional results.  We use the latest HPLC testing methods to ensure every shipment meets our exacting standards. This dedication to precision enables our Vitamin U powder to be used confidently in a wide range of applications, from nutritional supplements to specialized formulations. Whether you require small or large quantities, we provide solutions. Welcome to enquire with us at info@gybiotech.com.

 

Why Choose Guanjie?

● Independent factories and labs. We operate our own independent factories and laboratories, giving us full control over production quality, safety, and consistency from start to finish. This ensures every batch of Vitamin U powder product meets standards.

● Quality assurance is at the heart of our work. In addition to rigorous in-house testing, we also provide third-party testing reports to guarantee transparency and reliability for our customers worldwide.

● Have been in this field for 20 years.

● Have strong Collaborators: Northwestern University and the Chinese Academy of Sciences research center.

 

Product Introduction:

It is found in cabbage, cabbage, kale, lettuce, alfalfa, and other green leafy vegetables. It can be produced by the reaction of methionine with iodomethane and has a special odor and a salty and bitter taste. Unstable in light or air for a long time. It is easily soluble in water, insoluble in ethanol, and ether. The aqueous solution is acidic. 

 

COA

Item	Specification	Result
Character	White crystalline powder, Special foul-smelling. Easy to get wet in air and unstable to light and heat	White crystalline powder, Special foul-smelling. Easy to get wet in air and unstable to light and heat
Melting point	134-137℃. Decompose at the same time as melting	135-137℃. Decompose at the same time as melting
Identification
(1)Physiochemical Identification	(1) Should be positive reaction	Positive reaction
(2)Physiochemical Identification	(2) Should be positive reaction	Positive reaction
Other Test Items
Loss on drying	≤3.0%	0.7%
Residue ignition	≤0.2%	0.04%
Total Heavy Metals	<20ppm	9.1ppm
Methanol Residue	≤0.3%	0.01%
Total aerobic bacteria	≤2000cfu/g	<10 cfu/g
Yeast & Mold	≤200cfu/g	<10 cfu/g
E. Coli	Not detective	Not detective
Content	Calculated on the dry basis (C6H14CLNO2S) ≥98.0%	98.4%

 

 

Safety:

● Toxicological Profile
Available research indicates that vitamin U has a low toxicity profile in both animal and human studies. It is generally considered safe for short- to moderate-term use at common supplemental dosages, often ranging from 150 mg to 900 mg per day. No significant adverse effects have been reported at these levels, although data on very high doses or long-term chronic use remain limited.
● Contraindications and Cautions
While no major drug–nutrient interactions have been documented, individuals with sulfur metabolism disorders or those sensitive to methyl donors should use caution, as vitamin U contains a methyl group and sulfur. Pregnant or breastfeeding individuals should consult a healthcare professional before using concentrated vitamin U powder due to the lack of extensive clinical safety data in these populations.

● Purity and Quality Control
The safety of vitamin U powder also depends heavily on manufacturing quality. Poorly processed powders may contain contaminants, heavy metals, or residual solvents. Therefore, pharmaceutical-grade or food-grade products with third-party testing (e.g., HPLC purity analysis, heavy metal screening) are strongly recommended. Guanjie Biotech, as a vitamin U powder manufacturer, we can provide a testing report. Our quality can be ensured.

● Regulatory Status
Vitamin U is not classified as an essential nutrient, so it is regulated as a dietary supplement rather than a pharmaceutical drug in most regions. This means safety oversight largely depends on the manufacturer's compliance with Good Manufacturing Practices (GMP).

 

Factory&Team：

 

Certification

 

Package & Shipment

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