Our goal is to become your true partner in the field of dietary supplements in China. Joy BIotech is a professional supplier and manufacturer of cosmetic ingredients,pharmaceutical raw materials, Intermediates, APIs, Dietary supplements, ,etc. Our service covers export & Import, custom synthesis, CMO/CDMO of chemical and synthesis biology products. The factory has accumulated rich manufacturing experience. Our company is committed to applying advanced manufacturing technology and strict quality control standards to every product. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
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Subtilosin A CAS 98914-01-3Product Name:subtilosin ACAS NO.:98914-01-3MF:C129H208N36O41S3MW:3015.44342read more
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Adenosine 5'-triphosphate Disodium Salt CAS 51963-61-2Product Name:Adenosine 5'-triphosphate disodium saltCAS NO.: 51963-61-2MF:C10H19N5NaO14P3MW:551.15read more
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Ademethionine Disulfate Tosylate CAS 97540-22-2Product Name:Ademethionine Disulfate TosylateCAS NO.:97540-22-2MF:C22H34N6O16S4MW:766.78read more
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(R)-(+)-1,2-Dithiolane-3-pentanoic Acid CAS:1200-22-2Product Name:(R)-(+)-1,2-Dithiolane-3-pentanoic acidOther Name:(R)-(+)-Lipoic acidCAS NO.: 1200-22-2MF: C8H14O2S2MW: 206.33read more
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L-Tryptophan CAS NO 73-22-3Product Name:L-TryptophanCAS NO.:73-22-3MF:C11H12N2O2MW:204.23read more
Why Choose Us
Quality Control
QC team members are all qualified and receive regular training. A professional QA team ensures quality products and a sound documentation system is in place to support audits.
Our Team
Joy Biotech team members include postdocs, doctors, masters, bachelors in the fields of synthetic biopharmaceuticals, chemistry, biology.
Our Services
We not only provide quality products, but also the best pre-sales and after-sales services. Our goal is to build a long-term relationship with every customer. If you have questions or problems, please feel free to contact us by email, phone, WhatsApp... We will respond to you as soon as possible within 24 hours.
Fast Delivery
For products in stock, we can deliver immediately after receiving your payment. For synthetic chemicals, we will provide delivery time when quoting.
Types of Dietary Supplements
Fiber Supplements:Aid digestion and promote satiety.
Example: Psyllium husk (soluble fiber for regularity)
Specialty Supplements:Target specific health needs.
Example: Melatonin (sleep support)
Omega-3 & Fatty Acids:Essential fats important for heart, brain, and joint health.
Example: Fish oil (EPA & DHA for inflammation and cognition)
Vitamins:Essential organic compounds needed in small amounts for various bodily functions.
Example:B-complex vitamins (energy metabolism, nerve function)
Minerals:Inorganic elements crucial for body processes like bone formation, muscle function, and enzyme activity
Example:Calcium (bone health)
Protein & Amino Acids:Support muscle growth, repair, and metabolic functions.
Example:Creatine (strength and performance)
Herbal & Botanical Supplements:Derived from plants and used for various health benefits.
Example:Echinacea (immune support)
Probiotics & Prebiotics:Support gut health and digestion by promoting beneficial bacteria.
Example:Prebiotic fibers (food for probiotics)
Best-selling Dietary Supplements

Melatonin
CAS:73-31-4
MF:C13H16N2O2
MW:232.28
Appearance:White to off-white powder
Purity:99.5%
Store Condition:Store in a well-closed container protected from light
Application:Pharmaceutical;Dietary Supplements

(R)-(+)-Lipoic acid
CAS:1200-22-2
MF:C8H14O2S2
MW:206.33
Appearance:Light yellow to yellow powder
Purity:99.5%
Application:Pharmaceutical;Dietary Supplements

Sodium Alginate
CAS:9005-38-3
MF:C5H7O4COONa
Appearance:Off-white to pale yellow or light yellowish-brown, in fibrous, granular, or powdered form
Application:food additives;Pharmaceutical;Dietary Supplements
Advantages of Dietary Supplements
Melatonin
Melatonin have many advantages, including:
●Keeping your GI tract healthy: A large amount of the body’s melatonin is produced in the gut (though it doesn’t travel to the rest of the body). There’s a very high concentration of melatonin in the gut. Because of this, researchers believe it plays a role in supporting digestive health.
●Helping acid reflux: There’s some research showing that melatonin may help people with gastroesophageal reflux disease (GERD). More research is needed, though, before it can be recommended as part of reflux treatment.
●Reducing heart risks: If you’re taking melatonin, you may get some heart benefits as well. A handful of small studies have found some encouraging effects.
Helping migraines and headache: Melatonin may help make certain types of headaches less intense, particularly migraines. A review of research found that melatonin reduced:
Lactulose
Lactulose have many advantages, including: Lactulose is used to prevent and treat a brain condition that can happen in people with liver disease (hepatic encephalopathy). It relieves constipation by drawing water into the colon, making the stool (poop) softer and easier to pass. It prevents and treats hepatic encephalopathy by helping the body get rid of ammonia.
Sodium Alginate
Sodium alginate have many advantages, including: SA is a natural polysaccharide with eximious properties such as biosafety, biocompatibility, and renewability. Sodium alginate has advantages, including a wide range of sources, mild preparation conditions, and relatively low production costs.
Specification of Melatonin
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Product Name |
Melatonin |
|
CAS No. |
73-31-4 |
|
Package |
25kg/drum |
|
Storage Condition |
Store in a well-closed container protected from light |
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Test Item |
Specification |
|
Appearance |
White or off white powder |
|
Loss on drying |
≤1.0% |
|
Residue on Ignition |
≤1.0% |
|
Chloride and sulfate |
≤0.02% |
|
Heavy Metals |
As≤1ppm |
|
Cd≤1ppm |
|
|
Hg≤0.1ppm |
|
|
Pb≤1ppm |
|
|
Related compounds |
Individual impurities≤0.1% |
|
Total impurities≤1.0% |
|
|
Assay |
98.5~101.5% |
Specification of Sodium Alginate
|
Product Name |
Sodium alginate |
|
CAS No. |
9005-38-3 |
|
Test Item |
Specification |
|
Appearance |
Off-white to pale yellow or light yellowish-brown, in fibrous, granular, or powdered form |
|
Identification |
1.Should dissolve slowly in water to form a viscous liquid, insoluble in ethanol and ether 2.A large amount of gelatinous precipitate should be produced immediately 3.Should not form a precipitate |
|
Viscosity |
800-1000 |
|
PH |
6.0~8.0 |
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Moisture |
≤15.0% |
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Insoluble Matter In Water |
≤0.6% |
|
Ash Content |
18.0~27.0% |
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Lead |
≤5.0mg/kg |
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Arsenic |
≤2.0mg/kg |
|
Size Mesh |
80 mesh |
Specification of (R)-(+)-Lipoic acid
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Product Name |
(R)-(+)-Lipoic acid |
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CAS No. |
1200-22-2 |
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Package |
Inner layer is double-layer LDPE bags, outer layer is cardboard drum |
|
Storage Condition |
Store at 2-8℃ and sealed |
|
Test Item |
Specification |
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Appearance |
Light yellow to yellow powder |
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Solubility |
Meets the requirements |
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Identification |
The main peak retention time should be consistent with the control solution |
|
Water Content |
≤0.5% |
|
Specific rotation(Ethanol) |
+115°~+125° |
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Residue on ignition |
≤0.1% |
|
Limit of polymer content |
≤0.1% |
|
Residual solvents by GC |
EA ≤5000 ppm |
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MTBE ≤5000 ppm |
|
|
N-hexane ≤5000 ppm |
|
|
MCH ≤1180 ppm |
|
|
Purity by HPLC |
≥99.5% |
|
Max Impurity by HPLC |
≤0.2% |
|
Total impurity by HPLC |
≤1.0% |
|
Chiral purity by HPLC |
≥99.5% |
|
Assay by HPLC |
98.5%~101.5% |
Supply Chain & Logistics
Fast Delivery
Inventory Management: Safety stock for fast turnaround.
Reliable Global Delivery
Logistics Partners: DHL, TNT,FedEx, with expertise in customs clearance (INCOTERMS: FOB, CIF,CNF).

Sustainable development
Joy Biotech is committed to environmental sustainable development throughout our operations. We prioritize green chemistry principles, biological methods, and enzyme catalysis from R&D through commercial production to ensure sustainable and eco-friendly manufacturing processes.

FAQ
We're well-known as one of the leading dietary supplements manufacturers and suppliers in China. If you're going to buy high quality dietary supplements, welcome to get quotation from our factory. For price consultation, contact us.
Sodium Alginate, Alginate Oligosaccharide, Lactulose
