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Anti-Aging & Longevity

Glutathione

Also called GSH, reduced glutathione

Glutathione is your body's master antioxidant - a small molecule that lives inside nearly every cell and spends its day mopping up the "rust" of everyday metabolism.

Where this answer comes fromSmall human studies

Studied in people, in small numbers. The ranges below lean mostly on community-reported dosing and results — what people run, and what they say happened.

The quick answer

Glutathione is your body's master antioxidant - a small molecule that lives inside nearly every cell and spends its day mopping up the "rust" of everyday metabolism. It also gives your liver a hand with detox, which is why it's a favourite for people who want to feel clearer and look brighter.

The effects tend to be quiet rather than dramatic: a general sense of energy and clarity over the first few weeks, with skin brightening and evening out more gradually. One practical thing to know - once it's mixed, glutathione doesn't keep as well as most peptides, so use it within a couple of weeks and keep it cold and out of the light.

Why people use it

✨ Brighter, more even skin; 🛡️ Master antioxidant protection; 🧪 Supports liver detox; 🔄 Less oxidative stress; 💪 Immune support

What people report using

These are ranges other people have reported running. They are here so you can see what has actually been done — they are not medical advice and not a recommendation for you.

Standard — 200mg, three times a week200mg

Immune

How often
3× a week, morning
Route
subcutaneous
Where this comes from
Small human studies

Brighter skin and a general sense of clearing out.

Standard — 200mg, three times a week200mg

Longevity & anti-aging

How often
3× a week, morning
Route
subcutaneous
Where this comes from
Small human studies

Brighter skin and a general sense of clearing out.

Standard — 200mg, three times a week200mg

Skin & hair

How often
3× a week, morning
Route
subcutaneous
Where this comes from
Small human studies

Brighter skin and a general sense of clearing out.

1500mg vial + 7.5ml BAC water = 200mg/ml. 100-200mg = 50-100u. Daily or three times a week.

Work out your own units on the reconstitution calculator — the most common serious mistake in this area is arithmetic, not chemistry.

What to expect, and when

First thing people notice
Days 1–3 (energy, clarity)
When it gets real
Weeks 1–2 (skin brightness)
Where it peaks
Weeks 4–8 (full antioxidant baseline)
Patience needed
Low - felt quickly
The bit people get wrong

Skin-lightening evidence is real but variable and route-dependent; effects commonly fade after stopping, and IV glutathione in particular carries serious safety concerns including anaphylaxis and hepatotoxicity.

Side effects, and what people do about them

About as gentle as it gets - it's a molecule your body already makes. Injected, expect a little sting at the site. One thing worth knowing: at sustained high doses it can lighten skin tone (that's actually the effect some people are after). Easy to manage by keeping to normal doses.

Go deeper

Open these only if you want them.

How it actually works

A tripeptide - glutamate, cysteine, glycine - and the body's principal intracellular antioxidant. It is not receptor-mediated at all, which puts it in a different category from most of what sits alongside it here. It reduces reactive oxygen species directly and as the substrate for glutathione peroxidase, and it inhibits tyrosinase, the rate-limiting enzyme in melanin synthesis, which is the route behind the skin-brightening reports.

For stacking, there is no receptor to compete for. The interaction that does matter is with vitamin C, which regenerates oxidised glutathione back to its active form - a genuine chemical reason the two are paired, rather than a habit.

What people report, in full

Glutathione's reputation is mostly cosmetic - a brighter, clearer, more even complexion - and it's especially popular in some markets for exactly that. About half to sixty percent report noticeable skin clarity and a clean, less-oxidised feeling. It's worth knowing where that reporting comes from: most of it is clinic IV infusions, and most of the controlled study work is on oral and topical glutathione. The under-the-skin route has not been put through the same studies, so regard those community numbers as reported experience from a different route rather than a measured result for this one. The one thing every source agrees on is that levels don't hold for long, which is why a regular rhythm matters more here than any single dose.

Worth knowing

The human testing was for a different purpose than people use it for here

The trials are real. They were not asking the question most people are asking when they come looking for this one.

Sources and review

What people report

This record is built on what the wider community reports doing and experiencing, summarised above. No counted dataset has been attached to this compound yet — when one is published, it goes here with its numbers.

References

Hauser RA, et al. Randomized, double-blind, pilot evaluation of intravenous glutathione in Parkinson's disease. Mov Disord 2009. PMID 19230029.Did not establish clinical benefit over placebo.

Allen J, Bradley RD. Effects of oral glutathione supplementation on systemic oxidative stress biomarkers in human volunteers. J Altern Complement Med 2011;17(9):827. PMID 21875351.Oral glutathione did not significantly change oxidative stress biomarkers.

Arjinpathana N, Asawanonda P. Glutathione as an oral whitening agent: a randomized, double-blind, placebo-controlled study. J Dermatolog Treat 2012;23(2):97. PMID 20524875.

These references were located by literature search and recorded as the primary sources behind this record. The publishers block automated retrieval, so they are pointers to the right papers rather than quotations we have checked line by line. They are replaced as we read them properly.

Last reviewed 2026-09-06.

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