Glutathione half-life
In the blood, glutathione is cleared in about 10 minutes. Most of its activity happens inside cells, where it lasts far longer and varies widely from tissue to tissue. The short blood figure understates how long it's actually working.
What a half-life actually means
A half-life is the time it takes for half of what is in your blood to be gone. It does not mean the compound is finished at that point. Half goes, then half of what is left goes, and so on.
That is why the last traces take so much longer to disappear than the first. Most references treat something as effectively cleared after about five half-lives, which for Glutathione is roughly 50 minutes.
How Glutathione clears
| Half-lives | Time since dose | Roughly left |
|---|---|---|
| 1 | 10 minutes | 50% |
| 2 | 20 minutes | 25% |
| 3 | 30 minutes | 12.5% |
| 4 | 40 minutes | 6.25% |
| 5 | 50 minutes | 3.125% |
These are round numbers from a single half-life figure. Real clearance shifts with dose, body composition, liver and kidney function, and what else you are taking. Treat it as a shape, not a schedule.
Why the timing matters
A short half-life means levels swing between doses, so timing and frequency do most of the work. A long half-life means levels build for days or weeks before they settle, so a change you make today might not show up for a while, and stopping does not clear things straight away.
Glutathione sits at about 10 minutes, so it behaves like the short end of that range.
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