NUTRIXEAL NAC - 60 capsules

Cysteine is a proteinogenic amino acid, i.e. it contributes to protein synthesis. The "L" form (referred to in the notation "L-cysteine") corresponds to the natural form (the presence of an asymmetric carbon leading to the existence of several stereoisomers).

The chemical structure of this amino acid is characterized by the presence of a sulfhydryl group (one sulfur atom and one hydrogen atom), known to be particularly reactive. Easily oxidized, this -SH group readily interacts with reactive oxygen species (involved in oxidative stress), but also with many other compounds with which it is capable of forming disulfide bridges (bonds between two sulfur atoms). Also known as thiol, this function is central to the mode of action of L-cysteine and most proteins incorporating this amino acid. It is found, for example, in the active sites of many enzymes.

N-acetyl-cysteine (NAC), a glutathione precursor

N-acetyl-cysteine (also known by the acronym NAC), after oral consumption, is rapidly deacetylated in the body, making it an excellent source of L-cysteine for our cells. Although considered non-essential because our body is capable of producing it, L-cysteine can be lacking in certain situations. In particular, this amino acid is considered to be the main limiting factor in the synthesis of glutathione, our main endogenous antioxidant.

Reduced glutathione (also known as GSH), composed of L-cysteine, L-glutamic acid and glycine, derives its exceptional antioxidant properties from the thiol function in its chemical structure, inherited from L-cysteine. This -SH group is at the heart of the mechanisms of action attributed to reduced glutathione, and is also at the origin of its ability to chelate certain metals.

To find out more about this active ingredient, consult the nutrixeal Info nutraceutical index sheet dedicated to N-acetyl-cysteine (NAC).

The N-acetyl-cysteine (NAC) used here is derived from biofermentation.