Compare every L-Methionine product across UK retailers on Suppio, ranked by true value - price per active dose, not pack size. Prices refreshed daily.
Essential sulphur-containing amino acid involved in methylation and detoxification
We rank L-Methionine by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
What it is
L-Methionine is an essential amino acid, which is a building block of protein that the body cannot make on its own and must get from food or supplements. It is specifically a sulphur-containing amino acid, meaning it contains sulphur, a mineral that helps the body build and repair tissues.
Why it's used
It is primarily used to support methylation, a chemical process that acts like a switch to turn genes on or off and manage DNA. It also plays a key role in detoxification, which is the process the body uses to remove harmful toxins and waste from the system.
How it's made
To produce this supplement, manufacturers typically use a process called fermentation. They feed specific bacteria a mixture of sugars and nutrients, and as the bacteria grow, they produce the amino acid as a byproduct. This liquid is then filtered, purified, and dried into a powder to be put into capsules or tablets.
What it typically costs
This ingredient is generally mid-range in price. This is because the fermentation process requires controlled industrial environments and specific bacterial strains, making it more complex to produce than basic minerals but cheaper than rare or highly processed extracts.
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.
Essential sulphur-containing amino acid involved in methylation and detoxification
How does Suppio calculate the best-value L-Methionine?
We rank L-Methionine by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Are these prices verified?
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
How often are L-Methionine prices updated?
Prices across our retailer network are refreshed at least daily.