Why take NAC if you can simply buy glutathione in capsules? — NAC (N-acetyl-L-cysteine) food supplement, N90- VitalHarmony

Glutathione is a molecule that the body produces itself from three amino acids: glycine, glutamate and cysteine. Cysteine is considered the limiting link, as it is the one most often in short supply for synthesis. NAC (N-acetyl-L-cysteine) is a stable form of cysteine that is well absorbed and serves as the "building material" for making glutathione inside cells.

Ready-made glutathione in capsules is a different approach: you receive a molecule that has already been formed, from outside. The question is how effectively it is absorbed unchanged when taken orally. This is a subject of ongoing research, and there is no definitive answer yet. NAC, by contrast, acts as a precursor: the body itself regulates how much glutathione to synthesise from the cysteine it receives, which matches the natural metabolic pathway.

That is why NAC remains a popular choice among those looking for a supplement with antioxidant potential: its mechanism works through synthesis rather than direct delivery of the molecule. VitalHarmony NAC contains one key active ingredient without other active substances, which is convenient for those who want to add a targeted element to a routine they already follow.

This is not a medicine and not a replacement for a varied diet. During pregnancy and breastfeeding the product is not recommended; with chronic conditions or when taking medicines, consult a specialist before starting.