L-Methionine helps liver detoxification and metabolic balance, helping maintain healthy liver function, support antioxidant defences, and promote smooth metabolic pathways for everyday wellbeing. The key ingredient is L-Methionine, an essential amino acid that acts as a methyl donor and supports glutathione production for detox and antioxidant balance. The brand Metabolic Maintenance brings decades of trusted purity. It’s easy to trust this brand.

Available Sizes & Variants:

100 capsules – convenient daily dose for ongoing use

Benefits & Features:

• Supports healthy liver function.
• Aids detoxification pathways by providing L-Methionine, a key amino acid.
• Supports antioxidant defences by contributing to glutathione production, helping protect cells from oxidative stress and supporting ongoing detoxification in daily life for everyday wellbeing too.
• Supports metabolism by aiding homocysteine balance, a factor linked to cardiovascular health.
• Designed for daily use with rigorous quality controls to ensure purity.

Metabolic Maintenance brings decades of science-led care to this single-ingredient formula. The capsules are manufactured fresh every 90 days and pass robust third-party testing for purity and potency under strict cGMP standards. Ethical sourcing and transparent processes underpin the brand, earning trust from clinicians and customers alike. If you’re shopping in a vitamin shoppe near me, you’ll notice how this simple, clean supplement fits into daily life - easy to take, quick to organise, and reliably pure. Some shoppers also consider pairing with n acetylcysteine for broader liver support. It’s often viewed as a metabolism booster within balanced wellness routines.

L-Methionine 500mg

• GTIN: 838287001409
• Manufacturer: Metabolic Maintenance
• Categories: CHECKOUT UPSELLHair, Skin and Nails VitaminsMetabolic MaintenanceNew ArrivalsTENA
• 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.

The supplement should be consumed once a day as a dietary supplement, or as instructed by a physician. It is recommended to take the capsule in between meals for optimal results. Take two capsules a day after meals\, together or separated into two intakes

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

1. Supports Liver Health: L-Methionine is an essential amino acid that plays a crucial role in the detoxification and function of the liver. It helps to protect the liver from damage caused by toxins and promotes its healthy functioning.
2. Aids in Weight Management: L-Methionine has been shown to support weight loss by increasing the body's production of the hormone leptin, which helps to regulate appetite. It also helps to break down fats and remove excess cholesterol from the body.

The Core Ingredient Is: L-Methionine

L-Methionine is a vital amino acid that plays a big role in everyday metabolism and protein synthesis.

This form is the real L-enantiomer, commonly used as a methyl donor in metabolic pathways and as a precursor for cysteine and glutathione production, supporting detoxification and antioxidant status.

What L-Methionine Does?

L-Methionine is part of methylation steps through the synthesis of S-adenosylmethionine, which drives key biochemical processes in the body. It also helps boost glutathione production, a major antioxidant, and is part of pathways tied to liver function and metabolic balance.

EFSA and NHS guidance recognise the roles of methylation and antioxidant systems in everyday metabolism, while the nutrient's functions line up with its described roles in detoxification and redox balance.

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

Metabolic Maintenance takes a science‑backed approach and makes quality its core mission. This brand has earned a reputation over more than four decades for purity, transparency, and research‑driven formulations, earning trust from healthcare professionals and consumers alike. Their commitment to ethical sourcing and environmental stewardship sits in step with Welzo’s standards for responsible partnerships, and their cGMP certification underscores a disciplined manufacturing philosophy that supports consistent quality. For those evaluating supplier credibility, Metabolic Maintenance stands out with ongoing third‑party testing of both raw materials and finished products, emphasising purity and potency and the absence of unwanted excipients. Welzo reviewed this brand with input from Welzo's healthcare professionals and confirmed alignment with our rigorous testing protocols. This brand’s established industry standing and robust quality framework gave us confidence to select Metabolic Maintenance as our partner for L‑Methionine.

The product itself benefits from a brand that specialises in clean, additive‑free formulations, making Metabolic Maintenance a strong fit for this supplement. For more on our standards, explore our rigorous testing protocols.