Swanson L-Methionine provides essential amino acid support for liver fat metabolism and antioxidant protection, helping your body handle fats more efficiently while supporting cellular defence. As a lipotropic agent, it helps the liver break down fats and supports antioxidant defences. The star ingredient is L-Methionine, a sulphur-containing amino acid crucial for methylation and detoxification. Swanson backs this with years of science-backed quality, gluten-free and non-GMO certifications, and transparent minimal ingredients.

Available Sizes & Variants:

30 capsules - a convenient daily dose you can take with meals.

Benefits & Features:

• Supports liver fat metabolism for healthier fat processing.
• Helps support antioxidant defences through the sulphur-containing amino acid.
• Key active ingredient, L-methionine, also contributes to methylation reactions and detoxification, supporting cellular function, neurotransmitter production, and overall metabolic health in the body day by day.
• Gluten-free and non-GMO certification helps you feel confident in what you’re putting in your body.
• Swanson's years-long commitment to quality since 1969 means a straightforward, transparent formula with minimal inactive ingredients you can trust in everyday wellness routines and daily meals.

Swanson L-Methionine is a straightforward, single-ingredient formula designed for purity and ease of use. The bottle lists minimal inactive ingredients - rice flour, gelatin, magnesium stearate, silica - and carries gluten-free and non-GMO certifications with independent lab verification. Swanson has built a reputation for science-backed quality since 1969, focusing on clean, transparent formulas. It sits well in daily wellness routines and can pair nicely with vitamin d supplement, msm, and magnesium glycinate.

L-Methionine, L-Methionine

• GTIN: 87614111216
• Manufacturer: Swanson
• Categories: Swanson
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

As a dietary supplement, take one capsule of Swanson L-Methionine 500 mg per day with food and water. Do not exceed the recommended dosage. Store in a cool, dry place. Keep out of reach of children. Consult your doctor before use if you are pregnant, nursing, taking medication, or have a medical condition such as liver disease, kidney disease, elevated homocysteine, or cancer. Do not use if the seal is damaged.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: L-Methionine

L-Methionine is an essential sulphur-containing amino acid that the body cannot synthesise and must be obtained from the diet or supplements.

This form provides pure L-methionine in capsule form, a singular amino acid used to support normal metabolic processes and cellular protection in the body.

What Does L-Methionine Do?

EFSA recognises that methionine participates in metabolic methylation reactions and supports antioxidant defence through its role in synthesising other sulphur-containing molecules.

These functions help maintain normal liver metabolism and cellular health as part of routine wellness, with the amino acid contributing to baseline metabolic function and detoxification pathways.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Swanson is our trusted partner for this supplement thanks to a long-standing commitment to quality with facility processes that underpin consistent product integrity. The brand is recognised for its heritage, promoting itself as with the claim of Science-Backed Quality Since 1969, which reflects decades of know-how in bringing reliable formulations to market. This credibility is reinforced by gluten-free and non-GMO certifications with independent lab verification, underscoring Swanson's commitment to clear quality checks from formulation to packaging. Its straightforward L-Methionine formulation delivers 500mg per capsule with few inactive ingredients, in line with our preference for purity and a tight active ingredient profile.

This brand shines with product-specific know-how in amino acid support, emphasising lipotropic action in liver metabolism and antioxidant traits as part of its mechanism. Our trust is reinforced by how Swanson communicates clear standards and their solid manufacturing philosophy, which we evaluate through our our expert team of doctors, nurses, and nutritionists and our quality assurance criteria.

This mix of brand trust, product alignment, and rigorous checks made Swanson the top pick to deliver solid value and customer confidence for this supplement.