Glutathione Injections: What If You Could Refill Your Master Antioxidant?

You make your own antioxidant. Just less of it every year.

Every cell in your body makes a molecule called glutathione. Its job is to clean up the damage that ordinary living creates. Breathing, eating, exercising, a glass of wine: all of it leaves a mess, and glutathione is what sweeps it up.

Here is the catch. When researchers at Baylor College of Medicine compared adults in their seventies with adults in their twenties, the older group was running short of it.

So the question writes itself. What if you could fill it back up?

The Baylor team tried. The older adults whose glutathione was restored got stronger and walked faster. That result is why glutathione is one of the most talked-about molecules in aging research. And it is why this is worth knowing: a month of it now costs less than a single clinic drip.

What glutathione does all day

Glutathione is a tiny molecule built from three amino acids. Your cells make it around the clock, and it has two jobs worth knowing.

It disarms free radicals. Turning food into energy throws off reactive molecules that damage whatever they touch. Glutathione neutralizes them before they do.

It is your liver's cleanup crew. The liver uses glutathione to neutralize what the body wants gone. Here is how much it matters. In an acetaminophen overdose, liver damage begins when glutathione falls below about 30% of normal. The emergency treatment works by rebuilding it.

That is not a wellness claim. It is what happens in the emergency room.

You have less of it at seventy than at twenty-five

In the Baylor studies, the older adults did not only have less glutathione than the young adults. They also had more oxidative stress, weaker mitochondria (the parts of a cell that make energy), more inflammation and slower walking speed.

Which raises the obvious question. Are those things connected? And if you restore the glutathione, do the others follow?

What happened when researchers restored it

Two human studies have now put that question to the test.

The first study. Eight adults aged 70 to 80 had their glutathione restored for 24 weeks. Strength, walking speed, exercise capacity and thinking all improved. So did oxidative stress, inflammation and the health of their mitochondria. The lead researcher said some measures returned to the levels found in young adults.

The second study. This one was the proper test: 24 older adults, half on the real thing and half on a placebo, for 16 weeks. The treated group's glutathione deficiency was corrected. Their muscle strength and walking speed improved, and their waistlines and blood pressure came down. The placebo group did not improve.

Then comes the detail that matters most. Twelve weeks after the people in the first study stopped, the gains had declined.

Glutathione does not look like something you fix once. It looks like something you keep topped up.

Two things you should know. These were small studies and they need repeating in larger ones. And the researchers restored glutathione by giving its building blocks by mouth, so that the body made its own. Nobody has yet run the same trial with glutathione injections. Nobody has shown that any of this makes people live longer either, for the reasons we set out in NAD+ Injections and Aging.

Capsule, drip or injection?

If you want glutathione itself, there are three ways to take it. They are not equal.

What we think

Does it brighten skin?

This is the reason glutathione went viral, so here is what is known.

Small trials of capsules and creams found a brightening of skin tone that reversed after people stopped. For injections there is no good trial, and the FDA has said that no injectable drug is approved for skin lightening.

So we do not offer glutathione as a skin lightener. If your skin looks better for it, enjoy that as a bonus.

What glutathione costs

Read that list again. A month of our injections costs less than one drip.

Why ours is $57.32

No clinic. No chair. No nurse's hour. With a drip, a good part of what you pay for is the room.

With us, a licensed physician reviews your medical history online. One of the licensed 503A compounding pharmacies we work with prepares your prescription and ships it to you. The telehealth consultation is included in the price. There is no membership fee and no consultation fee, and longer plans cost the same per month.

If the physician decides glutathione is not right for you, you are refunded in full.

Is it safe?

Glutathione is something your body already makes, which is a good start. The harm documented with injections has come from how they were made.

In 2019 the FDA reported eight patients who became ill after glutathione given by vein. The cause was not glutathione. The pharmacies had used powder sold for dietary supplements, and it carried bacterial toxins at up to five times the limit.

So ask one question of anyone who sells it, including us: which pharmacy prepares it, and from what grade of ingredient? Ours is filled by a licensed 503A compounding pharmacy, and that pharmacy's name is on your label.

By mouth, glutathione seems to be well tolerated. Injections have been studied far less, and the long-term effects of regular injections are not known. Allergic reactions can happen and can be serious. It is not known how glutathione affects pregnancy, and it passes into breast milk. Tell the physician reviewing your intake if you are pregnant or breastfeeding, and list your allergies and medications.

Injected glutathione is a compounded medication. It is not FDA-approved, and the FDA has not reviewed it for safety or effectiveness.

Before you buy glutathione from anyone

1. Is this glutathione itself, or its building blocks?
2. Which pharmacy prepares it, and from what grade of ingredient?
3. Does a physician review my history first?
4. What does a month cost, and what does it cost in month two?

Keep reading: NAD+ Injections and Aging: What If You Never Ran Low? · Sermorelin and Aging: What If Your Body Only Needed a Nudge? · Metformin for Longevity: What If It Was Never Meant to Work Alone? · Do GLP-1 Medications Slow Aging?

Frequently asked questions

What does glutathione do?

It is the main antioxidant your cells make for themselves. It neutralizes the reactive molecules produced when you turn food into energy, and your liver uses it to neutralize what the body wants gone.

Do glutathione levels fall with age?

In studies at Baylor College of Medicine, older adults had a glutathione deficiency compared with young adults, along with more oxidative stress and inflammation.

What are the benefits of restoring glutathione?

In two small human studies, older adults whose glutathione was restored improved in muscle strength and walking speed, and in several markers of aging. Those studies used glutathione's building blocks by mouth, not injections.

Are glutathione injections better than capsules?

Nobody has compared them head to head. A single large dose by mouth did not reach the blood in one study, and daily capsules took six months to raise body stores by about a third. An injection skips the gut. We think that makes it the sensible way to take glutathione itself.

How much do glutathione injections cost?

Goprolean charges $57.32 for a one-month supply. That price includes the telehealth consultation with a licensed physician, and there is no membership fee. Other online sellers we checked charge $95 to $152 a month, and a drip at a clinic runs $100 to $250 a session.

Does glutathione lighten skin?

Small trials of capsules and creams found a brightening of skin tone that reversed after people stopped. There is no good trial of injections, and no injectable drug is FDA-approved for skin lightening.

Is injected glutathione approved by the FDA?

No. It is a compounded medication prepared by a pharmacy for an individual prescription. The FDA has not reviewed it for safety or effectiveness.

Sources

• Supplementing Glycine and N-Acetylcysteine (GlyNAC) in Older Adults: A Randomized Clinical Trial, Kumar and others, Journals of Gerontology Series A, 2023.
• Summary of the randomized trial, Baylor College of Medicine. Baylor holds a patent on the supplement used, licensed to a supplement company that did not fund the research.
• Human Trial Finds Supplement Improves Age-Related Defects, Genetic Engineering and Biotechnology News, 2021. A report on the first Baylor study.
• Randomized controlled trial of oral glutathione supplementation on body stores of glutathione, Richie and others, European Journal of Nutrition, 2015.
• The systemic availability of oral glutathione, Witschi and others, European Journal of Clinical Pharmacology, 1992.
• High-dose intravenous glutathione in man, Aebi and others, European Journal of Clinical Investigation, 1991.
• FDA highlights concerns with using dietary ingredient glutathione to compound sterile injectables, US Food and Drug Administration, June 2019.
• FDA Warns Against Skin Lightening Injectables, MedEsthetics, 2015. A report of the FDA consumer update.
• Glutathione for skin lightening: a regnant myth or evidence-based verity?, Sonthalia and others, Dermatology Practical and Conceptual, 2018.
• How N-acetylcysteine works in acetaminophen toxicity, University of Maryland Department of Emergency Medicine.
• Glutathione: uses, side effects and precautions, WebMD.
• Prices: a published price guide (May 2026) and sellers' own listings (October 2026).