Liposomal L-methionine 80% — High Bioavailability Essential Amino Acid Supplement

Product Overview

liposomal L-Methionine 80% is a premium-grade dietary supplement ingredient delivering L-methionine in an advanced liposomal delivery system. L-Methionine (CAS 63-68-3), also known as (2S)-2-amino-4-(methylsulfanyl)butanoic acid or L-2-amino-4-(methylthio)butanoic acid, is an essential sulfur-containing amino acid with the molecular formula C₅H₁₁NO₂S and a molecular weight of 149.21 g/mol. It occurs as a white crystalline powder with a characteristic odor and slight bitter taste, and is soluble in water (30 g/L at 20°C).

L-Methionine is one of the 20 standard proteinogenic amino acids and is classified as an essential amino acid because the human body cannot synthesize it. It is found in high-protein foods including meat, milk, eggs, and fish, with animal proteins containing approximately 0.5% to 3.5% methionine by weight. It is particularly important as the initiating amino acid in protein synthesis and as the primary source of sulfur in the human body.

Why Liposomal Technology?

Conventional L-methionine presents significant formulation challenges. As a large neutral amino acid (LNAA), it competes with other LNAAs (leucine, isoleucine, valine, tryptophan, and tyrosine) for transport across the intestinal epithelium and the blood-brain barrier via the L-type amino acid transporter (LAT1). This competition limits the fraction of orally administered L-methionine that reaches systemic circulation and target tissues.

Liposomal encapsulation provides four critical advantages:

1. Enhanced Absorption and Bioavailability — Lipid-based carriers and liposomal delivery systems improve the permeability and transport efficiency of L-methionine, enhancing its availability to target tissues including the liver, brain, and kidneys. Liposomal encapsulation bypasses the competitive LNAA transport pathway by utilizing lipid-mediated absorption mechanisms, ensuring efficient delivery of the amino acid to target cells.

2. Sustained Release for Balanced Methylation Support — Liposomal delivery provides a sustained-release profile that maintains steady plasma amino acid levels, supporting balanced methylation reactions rather than a sharp peak followed by rapid decline.

3. Enhanced Stability and Dispersibility — The phospholipid bilayer protects L-methionine from premature degradation during digestive transit and provides excellent water dispersibility for use in aqueous formulations including functional beverages and liquid supplements.

4. Clean-Label Compatible — The phospholipid carrier is sourced from plant-derived lipids, keeping the entire delivery system aligned with clean-label and vegan-friendly positioning.

Product Specifications

Key Features

• High Purity — Standardized to ≥80% L-methionine, with pharmaceutical-grade assay of 98.5%–101.5% available.

• Liposomal Enhancement — Lipid-based carrier system improves absorption and cellular uptake by enhancing permeability across biological membranes and bypassing competitive LNAA transport.

• Methyl Donor and SAMe Precursor — L-Methionine contributes to the synthesis of S-adenosyl-L-methionine (SAMe), which is necessary for normal brain function and serves as the primary methyl donor for numerous biological methylation reactions.

• Glutathione Precursor — L-Methionine is a precursor to L-cysteine, which is a component of glutathione, an important antioxidant molecule in the body.

• Liver Regeneration Support — Cells in the liver and kidneys especially need this amino acid for regeneration. L-Methionine helps to break down fats and assists with choline production.

• Heavy Metal Chelation — L-Methionine is a transporter of the antioxidant mineral selenium and assists with the transport of selenium and zinc.

• Clinically Studied for Immune Support — A double-blind, placebo-controlled study in 253 HIV-infected patients demonstrated that L-methionine supplementation (1.6 g/day) significantly decreased the level of decline in CD4 counts in females (p = 0.0027) and in patients of one trial centre (p = 0.0377), with no serious side effects directly associated with treatment.

• Water-Dispersible — Soluble in water (30 g/L at 20°C); suitable for capsules, tablets, powder drink mixes, and functional beverages.

• Batch Traceability — Complete COA, HPLC chromatogram, and identity data provided for each batch.

Application & Formulation Guidance

Recommended Dosage

Clinical studies and commercial products commonly recommend 500 mg of L-methionine per serving, with a typical dosage of 1–2 capsules daily, or up to 1,500 mg per day as needed. Amino acids are best absorbed when taken half an hour before eating or sleeping. A clinical study in HIV-infected patients used 1.6 g/day of L-methionine and demonstrated significant immune-supportive effects with no serious side effects. For best results, L-methionine should be taken with cofactor vitamins P5P (vitamin B6) and folate/folinic acid to support its metabolic conversion to SAMe and cysteine.

Important Safety Information: L-Methionine may increase the blood levels of homocysteine in some individuals. Individuals with homocystinuria or cardiovascular disease risk factors should consult a healthcare professional before supplementation. Not to be taken by pregnant or breastfeeding women without medical supervision. During methionine supplementation, intake of taurine, cysteine, and other sulfur-containing amino acids, as well as P5P and folate/folinic acid, should also be included for optimal metabolic balance.

Shipping & Lead Time

• Stock Orders: 3–5 business days after payment confirmation.

• Bulk / Custom Orders: 2–3 weeks, depending on quantity and customization requirements.

• Shipping Methods: International Express (FedEx, DHL, UPS), air freight, and sea freight.

• Coverage: Worldwide shipping, including remote areas.