Glutathione

Not one antioxidant among many — it's the main one, and your own cells make it.

It's a tripeptide that regulates the redox balance inside the cell — the environment in which enzymes work and genes are read 1.

The number: in a six-month randomized study of 54 non-smokers, the high dose raised stores by 30-35% in red blood cells, plasma and lymphocytes, and by 260% in buccal mucosa cells 1.

What the same literature honestly shows: a smaller four-week study found no change 2 — the effects look dose- and time-dependent, not immediate. And a month after stopping, levels return to baseline 1.

All of the above concerns oral administration. The injectable has the reasonable rationale of bypassing the gut, but doesn't yet have efficacy studies of its own.

It's a thiol — it oxidizes in air. Keep it sealed, away from light, and use it immediately after opening.

Your inner cleansing system — and it can be strengthened.

Glutathione doesn't just sweep up free radicals: it regulates the cell's entire redox balance, the climate in which everything else works better 1.

And it has a number behind it: in a six-month study of 54 non-smokers, the high dose raised stores by 30-35%, and by up to 260% in buccal mucosa cells 1.

The honesty it deserves: the result takes time and consistency — a shorter study found no change 2, and a month after stopping everything returns to baseline 1. You don't build a reserve that lasts forever.

All the data concern the oral form; the injectable has a logical rationale but no studies of its own yet.

Sensitive to air — sealed until use, away from light, and used as soon as it's opened. If it turns yellow, it has already oxidized.