Most pages about glutathione side effects list mild reactions and move on. That list is worth having, and it is below. But it buries the thing that actually sent people to hospital in 2026, which was not the molecule. It was how it was made.
This page is general information, not medical advice. If you are experiencing symptoms after receiving any injectable product, contact your prescribing clinician. Adverse reactions can be reported to FDA MedWatch.
The sourcing issue, first, because it is the serious one
In August 2026 FDA published a reminder to compounders about glutathione. The substance of it:
“Compounders are responsible for ensuring all components used in injectable drugs are appropriate for their intended use and should not use dietary supplement grade ingredients when making injectable drugs.”
And the reason: “Ingredients labeled for dietary supplement use may contain impurities and contaminants, including endotoxins, that may be harmful when administered as an injectable drug.”
FDA reported that at least 30 patients experienced adverse events after receiving IV glutathione compounded from a supplement grade lot. The reported symptoms were “fever, chills, pain, dizziness, signs of shock and sepsis-like symptoms, with some resulting in hospitalizations.” The ingredient supplier notified its customers on 20 August 2026. FDA noted it had communicated about this same practice in 2019 and remained concerned.
The recalls
Two voluntary nationwide recalls of compounded Glutathione Injection 200 mg/mL multi-dose vials followed in the same month, both after pharmacy testing found elevated bacterial endotoxin:
- Optimal Balance Pharmacy, 19 August 2026, one lot of the 30 mL multi-dose vial, distributed across 14 states. The notice reported adverse events already received including fever, chills, severe headache, nausea, vomiting, pain and allergic reaction symptoms.
- Victory Medical Center Pharmacy, a separate recall of the same product and strength for the same reason.
The Optimal Balance notice stated that injectable products with elevated endotoxin “could cause significant medical events including fevers, hypotension, inflammatory reactions, anaphylactic shock and death.”
Why sterile is not the same as safe
This trips people up. Sterility means no viable organisms. Endotoxin is a fragment of bacterial cell wall that survives sterilisation. A product can pass a sterility test and still carry enough endotoxin to cause a serious reaction. They are separate tests, and a pharmacy has to run both.
Which is why FDA told healthcare professionals to “check with their compounders regarding the source of the glutathione used to make injectable drugs for their patients.”
What to ask, before you start
- What grade is the glutathione? Pharmaceutical grade intended for sterile compounding is the answer you want. Dietary supplement grade is the answer FDA wrote the alert about.
- Which pharmacy compounds it, 503A or 503B?
- Is every lot tested for bacterial endotoxin, and can you see the certificate?
- Has any lot supplied to me been recalled?
If a provider cannot answer those, that is information. This is the rare category where the manufacturing question outweighs the pharmacology question.
Reported side effects of glutathione itself
Because there is no FDA approved glutathione product, there is no approved label listing adverse reactions with frequencies. What follows is drawn from published reports and case literature, and it is less complete than a drug label would be. That gap is itself worth knowing about.
More commonly reported
- Injection site reactions: redness, tenderness, swelling, bruising
- Nausea or abdominal discomfort
- Headache
- Lightheadedness, more often reported with intravenous administration
- Nasal irritation with the nasal spray route
Less common but more serious
- Bronchospasm and asthma exacerbation. This has been reported and is the reason a history of asthma is worth raising specifically during intake.
- Allergic and hypersensitivity reactions, up to and including anaphylaxis.
- Systemic reactions related to contamination rather than the drug, as described above. Fever and chills starting within hours of a dose are the pattern that should prompt a call to your clinician.
FDA has also warned consumers about injectable products marketed for skin lightening, which is the use glutathione is promoted for most aggressively outside the United States.
Who should be cautious
- Anyone with asthma or reactive airway disease. Raise it explicitly.
- Anyone who is pregnant or breastfeeding. There is not adequate data to support use.
- Anyone with a known sulfite or preservative sensitivity. Ask what the vial contains besides the active ingredient.
- Anyone on other medications. Disclose everything during intake, including supplements.
When to call someone
Seek medical attention promptly for difficulty breathing, wheezing, swelling of the face, lips or throat, hives, chest tightness, or fainting. Contact your prescribing clinician for fever, chills, severe headache, persistent vomiting, or a reaction at the injection site that is spreading or not settling.
Adverse reactions can be reported to FDA MedWatch at 1-800-332-1088 or through the FDA website.
Putting it in proportion
The commonly reported effects are mostly mild and local. The serious risk in 2026 came from ingredient sourcing, not from glutathione as a molecule, and it is a risk you can ask about directly and get a straight answer to. That is a more actionable position than most safety questions in this category.
The wider picture, including what the evidence does and does not establish, is in the glutathione therapy guide. The regulatory record is in is glutathione FDA approved.
Sources
Every quotation attributed to the FDA on this page is taken from the documents below. Follow the links and check them.
- FDA, FDA reminds compounders not to use dietary supplement grade glutathione for injectables. https://www.fda.gov/drugs/human-drug-compounding/fda-reminds-compounders-not-use-dietary-supplement-grade-glutathione-injectables
- FDA, Optimal Balance Pharmacy Issues Voluntary Nationwide Recall of Certain Lots of Compounded Glutathione 200 mg/mL Multi-Dose Vials Due to Elevated Endotoxin Levels, 19 August 2026. https://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/optimal-balance-pharmacy-issues-voluntary-nationwide-recall-certain-lots-compounded-glutathione-200
- FDA, Victory Medical Center Pharmacy Issues Voluntary Nationwide Recall of Certain Lots of Compounded Glutathione 200 mg/mL Multi-Dose Vials Due to Elevated Endotoxin Levels. https://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/victory-medical-center-pharmacy-issues-voluntary-nationwide-recall-certain-lots-compounded
- FDA MedWatch, Safety Information and Adverse Event Reporting Program. https://www.fda.gov/safety/medwatch-fda-safety-information-and-adverse-event-reporting-program
Last reviewed 9 September 2026. Regulatory status in compounding changes. If you are reading this well after that date, check the FDA sources directly rather than relying on this page.
Related reading
- The FDA peptide compounding status tracker, kept current
- Glutathione therapy: the complete guide
- Glutathione injection versus nasal spray
- Is glutathione FDA approved?
- Peptide reconstitution calculator
- NAD+ side effects
- Sermorelin before and after
- Epitalon
- NAD+ therapy: the complete guide
- Sermorelin therapy guide
Longevity plans from PrescribedRX
PrescribedRX prescribes longevity treatments through clinicians licensed in your state:
- Glutathione Injection. Administered by injection after a provider consultation.
- Glutathione Nasal Spray. A nasal alternative.
- NAD+ Injections. On a schedule set by your provider.
- NAD+ Nasal Spray. A nasal alternative.
- Sermorelin Injections. By prescription after consultation.
Every plan and its current price is on the plans page and the pricing page.
These are compounded preparations. Compounded drugs are not reviewed or approved by the FDA for safety or effectiveness, and treatment outcomes are not guaranteed.
This article is for general information. It is not medical advice and it is not a recommendation for any particular treatment. Whether a treatment is appropriate for you is a decision for a licensed clinician who has reviewed your health history and current medications.
