Glutathione injections and IV drips

What glutathione is

Glutathione Low is a tripeptide, a chain of three amino acids, that the body makes for itself and uses as an antioxidant ¹. That makes it one of the most searched peptides there is, and our glutathione entry grades the evidence for its popular uses as low. It reaches people three ways: as an oral supplement, in creams, and as an injection or IV drip, which in the US usually comes from a compounding pharmacy ².

Does it work by mouth?

A common claim is that glutathione taken by mouth is simply digested and never reaches the body. A six-month randomized trial in 54 non-smoking adults tested that directly, giving 250 or 1,000 mg a day or placebo ³. Glutathione levels in blood rose at both doses at one, three and six months. On the higher dose, levels in red blood cells, plasma and lymphocytes were 30 to 35% higher at six months, and in cells from the inside of the cheek 260% higher; on the lower dose, blood and red-cell levels rose 17% and 29% ³. The levels returned to baseline within a month of stopping, and a marker of oxidative stress improved in both dose groups ³.

So for those doses, oral glutathione does raise the body's own levels. What the trial did not show is that higher levels change any health outcome: it measured glutathione and an oxidation marker, not illness or wellbeing.

Skin lightening: what the trials show

Glutathione is sold widely as a skin lightener, and the oral and topical forms have been tested. In a 2012 randomized trial, 60 medical students took 500 mg a day or placebo for four weeks; a melanin index fell at all six measured sites on glutathione, but the difference from placebo was significant at only two, the face and a sun-exposed forearm ⁴. A 2019 systematic review found that oral glutathione at 500 mg a day and a 2% oxidized-glutathione cream could lighten sun-exposed skin, with no difference on sun-protected skin and some non-serious side effects ⁵. A 2025 systematic review counted five randomized trials and one open study of oral glutathione at 250 to 500 mg a day, all reporting a lower melanin index than placebo ⁶. These are small, short trials of a measured skin index, not of lasting change in skin colour.

The injectable form is where the evidence runs out. In its 2019 advisory, the Philippines Food and Drug Administration said no published clinical trial had evaluated injectable glutathione for skin lightening, that it had approved injectable glutathione only as an add-on in cisplatin chemotherapy, and that possible side effects included toxic effects on the liver, kidneys and nervous system ⁷; a 2016 review notes that adverse effects of IV glutathione prompted that warning ⁸. In the US, FDA says it has approved no injectable drug for skin whitening or lightening. It warns that such products, which can contain glutathione, vitamin C, collagen Medium and even human placenta, may cause serious harm, and records that in 2017 a federal court ordered a New Jersey company to stop selling them and recall them ⁹.

IV drips: an active FDA investigation

The most urgent news concerns the drips themselves. On August 27, 2026, FDA said it was aware of at least 30 patients who had adverse events after receiving IV glutathione, alone or with other ingredients ². The glutathione had been labelled dietary supplement grade, which FDA says is not an appropriate ingredient for injectable drugs, because material made for supplements can carry contaminants, including endotoxins, that are harmful when injected ². The reported events included fever, chills, pain, dizziness, signs of shock and sepsis-like symptoms, some needing hospital care, and FDA said it continued to receive reports and was investigating ².

Recalls followed. In September 2026, a Texas compounding pharmacy recalled compounded glutathione vials, along with multi-ingredient drips sold as Myers' Cocktail and Tri-Immune Boost, after finding elevated endotoxin in the glutathione ingredient ¹⁰, and CDC lists further recalls of compounded glutathione for the same reason ¹¹. This has happened before: in February 2019 FDA warned compounders about a glutathione powder supplied to about 100 compounders in 30 states, after seven patients had reactions to IV glutathione, one of them hospitalised ¹².

The problem FDA describes is the grade of the ingredient, not glutathione itself. If you are offered a glutathione drip, ask which pharmacy compounded it and what grade of glutathione it used; our questions to ask a peptide clinic cover the rest.

Beyond skin: Parkinson's disease

Glutathione drips are also promoted for brain health, and Parkinson's disease is where they have been tested properly. In a 2009 pilot trial, 21 people with Parkinson's received 1,400 mg of IV glutathione or placebo three times a week for four weeks; it was well tolerated, but there was no significant difference in symptom scores ¹³. A 2017 trial of glutathione sprayed into the nose, in 45 people, found that every group improved, placebo included, and neither dose was better than placebo ¹⁴.

Legal status and sport

In the US, glutathione is sold as a dietary supplement and compounded by pharmacies. As of October 2, 2026, it sits in Category 1, the substances under evaluation, on FDA's interim list of bulk substances for 503A compounding, last updated May 14, 2026 ¹⁵; our guide to FDA's categories explains what that allows. Category 1 says nothing about quality: the August 2026 alert concerns injectables made with the wrong grade of ingredient ².

For athletes, the route matters more than the substance. WADA's 2026 Prohibited List bans intravenous infusions or injections of more than 100 mL in any 12-hour period, except those received legitimately in hospital treatment, surgery or clinical investigations ¹⁶. A typical wellness drip is far larger than that.

Frequently asked questions

Does oral glutathione work?

It raises the body's levels. In a six-month randomized trial, 250 or 1,000 mg a day increased glutathione in blood and cells, and levels fell back within a month of stopping. Whether that changes health outcomes was not tested.

Do glutathione injections lighten skin?

The randomized evidence for skin lightening is for oral and topical glutathione, and it is modest. In 2019 the Philippines FDA said no published trial had evaluated injectable glutathione for skin lightening, and the US FDA has approved no injectable skin lightener.

Are glutathione IV drips safe?

FDA is investigating. On August 27, 2026 it reported at least 30 patients with adverse events, including shock-like and sepsis-like symptoms, after IV glutathione made from dietary-supplement-grade ingredient, and compounded glutathione vials were recalled in September 2026.

Is glutathione legal to compound?

Yes, under FDA's interim policy: as of October 2, 2026 it is in Category 1 of the 503A bulk substances list, last updated May 14, 2026. FDA says injectables must not be made from dietary-supplement-grade ingredient.

Is a glutathione drip banned in sport?

The infusion is, if it is large enough. WADA's 2026 list bans IV infusions of more than 100 mL in 12 hours outside hospital care, whatever they contain.

Related on Grey Peptides

• Peptide clinics: 12 questions to ask before you pay
• What peptide therapy really costs in 2026
• FDA's Category 1 and 2 explained

Sources

1. Narayanankutty, A., Job, J. T., Narayanankutty, V. (2019). Glutathione, an Antioxidant Tripeptide: Dual Roles in Carcinogenesis and Chemoprevention. Curr Protein Pept Sci, 20(9), 907-917. PMID: 30727890
2. US Food and Drug Administration. FDA reminds compounders not to use dietary supplement grade glutathione for injectables (fda.gov), August 27, 2026; read October 2, 2026.
3. Richie, J. P., Nichenametla, S., Neidig, W., et al. (2015). Randomized controlled trial of oral glutathione supplementation on body stores of glutathione. Eur J Nutr, 54(2), 251-63. PMID: 24791752
4. Arjinpathana, N., Asawanonda, P. (2012). Glutathione as an oral whitening agent: a randomized, double-blind, placebo-controlled study. J Dermatolog Treat, 23(2), 97-102. PMID: 20524875
5. Dilokthornsakul, W., Dhippayom, T., Dilokthornsakul, P. (2019). The clinical effect of glutathione on skin color and other related skin conditions: A systematic review. J Cosmet Dermatol, 18(3), 728-737. PMID: 30895708
6. Sarkar, R., Yadav, V., Yadav, T., et al. (2025). Glutathione as a skin-lightening agent and in melasma: a systematic review. Int J Dermatol, 64(6), 992-1004. PMID: 39444151
7. Food and Drug Administration Philippines. FDA Advisory No. 2019-182: Unsafe use of glutathione as skin lightening agent (fda.gov.ph), 2019; read October 2, 2026.
8. Sonthalia, S., Daulatabad, D., Sarkar, R. (2016). Glutathione as a skin whitening agent: Facts, myths, evidence and controversies. Indian J Dermatol Venereol Leprol, 82(3), 262-72. PMID: 27088927
9. US Food and Drug Administration. Injectable Skin Lightening and Skin Bleaching Products May Be Unsafe, consumer update (fda.gov); read October 2, 2026.
10. US Food and Drug Administration. Company announcement: nationwide recall of compounded glutathione 200 mg/mL, Myers' Cocktail and Tri-Immune Boost vials due to elevated endotoxin levels (fda.gov), FDA publish date September 13, 2026; read October 2, 2026.
11. Centers for Disease Control and Prevention. Adverse events linked to injectable glutathione compounded with dietary supplement grade ingredient: current situation (cdc.gov); read October 2, 2026.
12. US Food and Drug Administration. FDA warns compounders not to use glutathione from Letco Medical to compound sterile drugs (fda.gov), February 1, 2019; read October 2, 2026.
13. Hauser, R. A., Lyons, K. E., McClain, T., et al. (2009). Randomized, double-blind, pilot evaluation of intravenous glutathione in Parkinson's disease. Mov Disord, 24(7), 979-83. PMID: 19230029
14. Mischley, L. K., Lau, R. C., Shankland, E. G., et al. (2017). Phase IIb Study of Intranasal Glutathione in Parkinson's Disease. J Parkinsons Dis, 7(2), 289-299. PMID: 28436395
15. US Food and Drug Administration. Bulk Drug Substances Nominated for Use in Compounding Under Section 503A (category list), updated May 14, 2026; glutathione listed in Category 1; read October 2, 2026.
16. World Anti-Doping Agency. The 2026 Prohibited List, method M2.2 (intravenous infusions and injections of more than 100 mL per 12-hour period); read October 2, 2026.

Educational information, not medical advice. Each dose in this guide names its source, an approved label or a published study. None is a recommendation for you. An unapproved compound has no established safe or effective human dose, and products sold for “research use only” are not made or tested for people. Talk to a doctor before acting on anything on this site, including before you start, stop or change any medicine or dose.