Liposomal Glutathione: Evidence, Oral vs IV, How to Choose

Disclaimer: This article is for information only and is not medical advice. Glutathione supplements aren't proven to prevent or treat any disease. Talk to a clinician before taking glutathione if you're pregnant or breastfeeding, have asthma, or are being treated for cancer, and before getting IV glutathione. BiohackList may earn commissions from qualifying purchases in the future (disclosure).

Liposomal glutathione can raise blood glutathione levels. So can plain oral glutathione, and no published trial we found shows liposomal raises them more. The strongest study, a 6-month placebo-controlled trial, used ordinary capsules. We found no trial showing that either form improves health outcomes.

In the US, oral glutathione is sold as a dietary supplement. On its "FDA 101: Dietary Supplements" page, the FDA says it doesn't have the authority to approve dietary supplements for safety and effectiveness before they are sold.

No listing on this page is paid or sponsored.

What glutathione is

Glutathione is a tripeptide, a chain of three amino acids: cysteine, glutamate and glycine. Your cells make it, and it takes part in antioxidant reactions and in processing many compounds. It comes in a reduced form (GSH), the active antioxidant form, and an oxidized form (GSSG). Researchers often use the ratio between them as a marker of oxidative stress.

Supplements usually contain reduced glutathione. Setria is a branded reduced glutathione from the Japanese company Kyowa Hakko, made by fermentation and used in several studies. S-acetyl glutathione is a modified form marketed as more stable. The trials below didn't test it.

Does oral glutathione get absorbed? The studies

For years, the standard view was that glutathione gets broken down in the gut and can't raise levels in the body. Three trials tested that and got different results.

Allen and Bradley, 2011 (no change). In a randomized, double-blind, placebo-controlled trial at Bastyr University, 40 healthy adults took 500 mg of glutathione twice a day or placebo for 4 weeks. Researchers found no change in oxidative stress markers or red blood cell glutathione.

Richie and colleagues, 2015 (higher levels). A 6-month randomized, double-blind, placebo-controlled trial at Penn State gave 54 nonsmoking adults 250 mg or 1,000 mg of glutathione a day, or placebo. Blood glutathione rose at 1, 3 and 6 months at both doses. At 6 months, the high-dose group's levels were 30 to 35% higher in red blood cells, plasma and lymphocytes, and 260% higher in cheek cells. They fell back to baseline after a 1-month break. The ratio of oxidized to reduced glutathione fell in both dose groups. In the high-dose group, natural killer cell activity, a lab marker of immune cell function and not a health outcome, more than doubled at 3 months. The study used Setria glutathione, and Kyowa Hakko's own 2014 press release says the company supported the study.

The two trials differ in length (4 weeks vs 6 months), and the 2015 authors note that effects built up over time. That's one possible reason the results differ.

Sinha and colleagues, 2018 (liposomal pilot). This 1-month pilot at Penn State gave 12 healthy adults 500 or 1,000 mg a day of liposomal glutathione, with no placebo group. Blood glutathione rose after 1 week. Increases peaked at 2 weeks: 40% in whole blood, 25% in red blood cells, 28% in plasma and 100% in immune cells. Oxidative stress markers fell and immune cell markers rose. The authors called the findings preliminary and noted the small sample. Researched Nutritionals, which sells a liposomal glutathione product, funded the study and supplied the product.

Liposomal vs regular oral glutathione

Liposomes are tiny spheres of phospholipids, the same kind of fat that forms cell membranes. Liposomal products wrap glutathione inside them, on the theory that this protects it in the gut and helps absorption. Codeage, for example, says its capsules use a phospholipid complex from sunflower lecithin.

The theory is reasonable, but we found no published head-to-head trial demonstrating it against plain capsules. A 2026 single-dose crossover study in 14 adults included both a standard and a liposomal form. Its abstract reports only that a third, micellar formulation beat the standard form. It gives no liposomal vs standard result, and the micellar product's makers were involved.

What we can say: plain capsules raised blood levels over 6 months in a placebo-controlled trial, and a liposomal product raised them over 2 weeks in an uncontrolled pilot. Different designs like these can't be compared directly.

Oral vs IV glutathione

IV glutathione from wellness clinics and med spas is usually made by compounding pharmacies. The FDA states that compounded drugs are not FDA-approved, which means the agency doesn't verify their safety, effectiveness or quality before they are sold.

The FDA has warned about this specifically:

• August 27, 2026: the FDA said it was aware of at least 30 patients who had adverse events after IV glutathione, alone or with other ingredients. The glutathione came from one lot of supplement-grade ingredient distributed to several compounding pharmacies. Reported problems included fever, chills, pain, dizziness, and signs of shock and sepsis-like symptoms, and some patients were hospitalized. The FDA said supplement-grade glutathione is not an appropriate ingredient for injectable drugs, and two Texas pharmacies recalled products for elevated endotoxin.
• 2019: the FDA reported seven patients with adverse events after injectable drugs compounded with an L-glutathione powder, linked to possibly high endotoxin levels.

FDA and ConsumerLab pages checked Oct 31, 2026.

We found no trial comparing IV and oral glutathione for health outcomes. If a clinician recommends IV glutathione for a specific reason, ask where the ingredient comes from and whether it is pharmaceutical grade.

Liposomal glutathione benefits: what's supported vs marketing

Supported by small studies: oral glutathione, plain or liposomal, can raise glutathione levels in blood and some cells, and can shift oxidative stress markers.

Not shown in any study we found: that higher blood glutathione improves energy, immunity, skin, aging, liver health or any disease. The immune cell numbers above are lab markers, and the liposomal figures come from a 12-person uncontrolled pilot. "Detox" is a marketing term, not a measured outcome.

Precursors: NAC and glycine

Another approach is to supply the raw materials. N-acetylcysteine (NAC) provides cysteine, glycine is another building block, and GlyNAC combines the two.

In a 2023 randomized trial at Baylor College of Medicine, 24 older adults took GlyNAC or a placebo for 16 weeks, and 12 young adults took GlyNAC for 2 weeks. The older adults started with lower glutathione than the young adults. The authors reported that GlyNAC, but not placebo, improved their glutathione levels, oxidative stress and several other measures. The study was small, and the results need confirming in larger trials. It also tested a different strategy, not a glutathione supplement.

How to choose a liposomal glutathione

• Independent testing. Of 11 glutathione and S-acetyl glutathione supplements ConsumerLab tested in 2024, 1 provided only 81% of its listed glutathione. In its July 13, 2026 update, ConsumerLab reported that only 6 of 12 glutathione supplements sold on Amazon contained their claimed amount, and 2 contained none. Look for one tested by an independent lab.
• Dose in the studied range. Trials used 250 to 1,000 mg a day.
• Clear form. Look for "reduced glutathione" or "L-glutathione" and the amount per serving. Setria is the branded form used in the 2015 trial.
• Price per 500 mg. Liposomal products often cost more, so compare the cost of 500 mg across options.
• Storage. Some liquids need refrigeration. Quicksilver Scientific, for example, ships with ice packs and says to refrigerate.

The options compared

We haven't tested these products. Details come from each brand's official page, checked Oct 7, 2026.

Codeage

Codeage lists 500 mg of Setria glutathione per 2-capsule serving, within the dose range used in trials. Its label tells pregnant or nursing women to consult a clinician.

Quicksilver Scientific

Quicksilver sells a 50 mL liquid for $45.00 in two flavors. The listing we checked didn't state the amount per serving, so we can't work out its cost per 500 mg or compare it with the others on price.

Plain capsules

If you just want what was studied in the longest trial, plain reduced glutathione (such as products made with Setria) is a reasonable choice. It's often cheaper per milligram than liposomal versions.

Safety and who should avoid it

Oral glutathione was well tolerated in the trials above, but they were short and in healthy adults.

• Asthma. In a small 1997 study, inhaled (nebulized) glutathione caused significant airway narrowing in people with mild asthma. The study authors attributed this to sulfite formation. That was inhaled, not oral, but people with asthma should talk to a clinician first.
• Pregnancy and breastfeeding. The trials didn't include pregnant or breastfeeding women. Ask a clinician.
• Cancer treatment. Ask your oncologist before taking glutathione during cancer treatment.
• IV glutathione. See the FDA warnings above.

For another antioxidant supplement with its own label-accuracy issues, see our astaxanthin guide.

FAQ

Does liposomal glutathione actually work? It can raise glutathione levels in the blood. A 12-person pilot study found higher levels after 1 to 2 weeks of 500 or 1,000 mg a day, but it had no placebo group. We found no study testing whether that improves any health outcome.

Is liposomal glutathione better than regular glutathione? We found no trial showing that it is. The longest placebo-controlled trial, which ran 6 months, used plain oral glutathione capsules and found higher blood levels. We found no published trial reporting that a liposomal product raises blood levels more than plain capsules.

Oral or IV glutathione: which is better? We found no trial comparing them for health outcomes. IV glutathione from clinics is usually a compounded drug, and the FDA states that compounded drugs are not FDA-approved. In an August 27, 2026 statement, the FDA said it was aware of adverse events in at least 30 patients after IV glutathione made with a supplement-grade ingredient, and some patients were hospitalized.

How much liposomal glutathione should I take? We can't recommend a dose. Trials used 250 to 1,000 mg a day of oral glutathione, and the liposomal pilot used 500 or 1,000 mg a day. Follow the label and ask a clinician if you have a health condition.

Does glutathione lighten skin? We don't make skin claims, and skin lightening is outside what the studies in this guide measured. Be especially wary of injectable glutathione sold for that purpose, given the FDA's warnings about compounded glutathione made with supplement-grade ingredients.

Is glutathione safe? Who should avoid it? Oral glutathione was well tolerated in the trials we cite, which were short and in healthy adults. Inhaled glutathione caused airway narrowing in a small study of people with mild asthma. Talk to a clinician first if you're pregnant or breastfeeding or have asthma, and ask your oncologist first if you're being treated for cancer.

Can I raise glutathione another way? A small 2023 trial reported that glycine plus NAC (GlyNAC) improved glutathione levels in older adults over 16 weeks. It tested a different approach, and the results need confirming in larger trials.

Disclaimer: This article is for information only and is not medical advice. Glutathione supplements aren't proven to prevent or treat any disease. Talk to a clinician before taking glutathione if you're pregnant or breastfeeding, have asthma, or are being treated for cancer, and before getting IV glutathione. BiohackList may earn commissions from qualifying purchases in the future (disclosure).

Sources

• Allen J, Bradley RD. Effects of oral glutathione supplementation on systemic oxidative stress biomarkers in human volunteers. J Altern Complement Med. 2011;17(9):827-833. PMID 21875351
• Richie JP Jr, et al. Randomized controlled trial of oral glutathione supplementation on body stores of glutathione. Eur J Nutr. 2015;54(2):251-263. PMID 24791752
• Kyowa Hakko USA. Study shows oral supplement Setria Glutathione effectively enhances body's most important antioxidant (June 4, 2014; funding disclosure)
• Sinha R, et al. Oral supplementation with liposomal glutathione elevates body stores of glutathione and markers of immune function. Eur J Clin Nutr. 2018;72(1):105-111. PMID 28853742
• Solnier J, et al. A targeted metabolomic assessment of oral glutathione bioavailability and safety in humans: a randomized crossover clinical trial. Antioxidants (Basel). 2026;15(3):354. PMID 41897500
• Kumar P, et al. Supplementing glycine and N-acetylcysteine (GlyNAC) in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, physical function, and aging hallmarks: a randomized clinical trial. J Gerontol A Biol Sci Med Sci. 2023;78(1):75-89. PMID 35975308
• Marrades RM, et al. Nebulized glutathione induces bronchoconstriction in patients with mild asthma. Am J Respir Crit Care Med. 1997;156(2 Pt 1):425-430. PMID 9279219
• U.S. FDA. FDA reminds compounders not to use dietary supplement grade glutathione for injectables (Aug 27, 2026)
• U.S. FDA. FDA highlights concerns with using dietary ingredient glutathione to compound sterile injectables (2019)
• U.S. FDA. Compounding and the FDA: Questions and Answers
• U.S. FDA. FDA 101: Dietary Supplements
• ConsumerLab. Glutathione Supplements Review (products tested in 2024; updated July 13, 2026; public summary)
• Codeage Liposomal Glutathione product page (checked Oct 7, 2026)
• Quicksilver Scientific Liposomal Glutathione product page (checked Oct 7, 2026)
• Rho Nutrition Liposomal Glutathione product page (checked Oct 7, 2026)