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L-Methionine capsules supplement | OEM bulk supplier



Product Overview:
L-methionine capsules are increasingly becoming an essential ingredient in daily health supplement formulations. As an essential sulfur-containing amino acid, L-methionine is a key structural component in protein synthesis, cell defense, and metabolic pathways.
Product Attributes
Dosage Form: Capsules
Dose: 2 Capsules Per Serving
OEM: Customized logo is welcome, Packing as your requirement. offering private label
Type of Product: L-Methionine capsules
Model Number: ASRN-L-Methionine capsules
Specification: 500mg,800mg/bottle or customized
Sample: L-Methionine capsules Avaliable
Keywords: L-Methionine capsules
Brand: Ausreson
MOQ: 50 bottles
Appearance: Capsules
Storage: Cool Dry Place
Shelf Life: 2 Years
Test Method: HPLC
Product Details
What is L-methionine? Why is market demand growing?
Before placing bulk orders, the sourcing team must understand the core biochemical value driving consumer interest.
Unlike non-essential amino acids, L-methionine cannot be synthesized by the body and must be obtained through diet or structured supplements. It contains active sulfur molecules, giving it unique properties essential for building other important compounds in the body.
Core Nutritional Functions (compliant with FDA and EFSA standards):
- Precursor to Glutathione: L-methionine is a building block of cysteine, the substance the body directly uses to generate glutathione. Glutathione is the body's primary endogenous antioxidant, responsible for neutralizing oxidative stress.
- Methylation Pathway: L-methionine is a direct precursor to S-adenosylmethionine (SAMe). SAMe is widely involved in hundreds of cellular methylation reactions that support normal DNA expression and cellular health.
- Structural Support for Keratin: The sulfur provided by L-methionine helps in the cross-linking of proteins, thus maintaining the natural structural integrity of hair, skin, and nails.
Technical Specifications
| Parameter | Premium Market Standard | B2B Relevance |
| Chemical Form | Pure L-Methionine (Free Form) | Maximum bioavailability compared to synthetic D-forms. |
| Assay / Purity | ≥99.0 %(on dry basis) | Ensures potency and reduces unwanted filler compounds. |
| Heavy Metals | Pb ≤ 1 ppm, As ≤ 1 ppm, Hg ≤ 0.1 ppm | Strict compliance with California Prop 65 and EU regulations. |
| Capsule Shell Options | HPMC (Veggie) or Bovine Gelatin | Caters to diverse dietary demographics (Vegan/Halal/Kosher). |
| Standard Dosages | 500 mg or 1000 mg per capsule | Aligns with the most common consumer serving sizes. |

Solving three major problems in the import procurement of L-methionine
1: Odor Control and Consumer Acceptance- Because L-Methionine is a sulfur-containing compound, raw powder naturally possesses a distinct, pungent aroma. If raw material processing is unrefined, the final capsules can emit a strong smell that leads to high product return rates from end consumers.
- Our Solution: Advanced encapsulation technology and tight-sealing HPMC/Gelatin shells. Premium manufacturing environments utilize moisture-controlled encapsulation loops to minimize environmental volatile compounds, locking the odor inside the capsule securely.
- Amino acid powders are inherently hygroscopic (they readily absorb moisture from the air). During ocean freight transit through humid tropical zones, low-grade capsules can soften, deform, or clump together.
- Our Solution: We implement strict climate-controlled production zones (Relative Humidity $\le 40\%$) and use medical-grade HDPE bottles with multi-layer induction seals and internal silica desiccants.
Western customs authorities and retail channels require absolute traceability. You cannot afford to risk a shipment seizure due to missing paperwork.
- Our Solution: Every wholesale batch of L-Methionine capsules must be accompanied by a comprehensive document package:
- CoA (Certificate of Analysis): Detailing microbial limits, heavy metals, and exact chemical assays.
- Third-Party Testing: Periodic verification from independent labs (SGS, Eurofins).
- Facility Certifications: Evidence of cGMP (Current Good Manufacturing Practice), ISO 22000, and HACCP compliance.
Customization and Private Labeling (OEM/ODM Solutions)
For brands looking to quickly launch L-methionine products, choosing a one-stop OEM (Original Equipment Manufacturer) service can reduce upfront financial risk. Look for partners who can provide flexible configurations:
- Synergistic Formulation: L-methionine works best when combined with cofactors. Consider formulating compound capsules containing L-methionine, vitamin B6, vitamin B12, and folic acid for comprehensive metabolic support.
- Clean Label Options: Modern consumers demand minimal excipients. Formulas must be free of magnesium stearate, silica, and artificial colors.
- Flexible Packaging: From bulk capsules in double-layered PE bags for local repackaging to labeled bottled products with custom cardboard sleeves for direct retail.
Why Choose to Partner with Certified Cross-Border Manufacturers?
In the global dietary supplement supply chain, partners must treat compliance as a fundamental requirement, not an afterthought. By sourcing high-purity, GMP-compliant L-methionine capsules, your brand can ensure consumer safety, meet US and EU regulatory requirements, and establish a long-term market position.
If you are looking to expand your amino acid product line with proven, market-compliant formulations, contact our international supply team today for free samples and a detailed bulk quote.

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About us
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, customized manufacturer.
Our advantage
We possess extensive experience, handling every step from sourcing each ingredient in the formulation to post-filling inspection, all at the most competitive prices and with the fastest delivery times.
InterlGroup owns factory, Main Product Foods additives, Nutritional supplements, Healthcare Products(capsules,Softgels,tablets,Gummies,Liquid Drops,Gum,solid beverage and other customized products), plant extracts.
Support OEM&ODM service,Design label packaging, Overseas in stock, Fast customization, Drop Shipping.
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.
Добавка L-Метионин в капсулах | OEM-поставщик оптовых партий
Complément alimentaire L-Méthionine en gélules | Fournisseur OEM en gros
L-Methionin Kapseln Nahrungsergänzung | OEM-Großhandelslieferant
Suplemento de L-Metionina en cápsulas | Proveedor OEM al por mayor
Suplemento de L-Metionina em cápsulas | Fornecedor OEM no atacado
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