L-Glutathione and Vitamin C: what the published research says
PubMed indexes 8 records that name L-Glutathione and Vitamin C together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.
Every statement below is attributed to a named, dated, linked source.
This page lists published research relevant to L-Glutathione and Vitamin C. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.
A study appearing here is not proof that an interaction exists. Two substances can be named together in a paper that never tested them in combination, and a source listed as background may cover only one of them.
Findings are quoted from each abstract as the authors wrote them. NutriStack has not re-analysed, pooled, or reconciled them, and they may disagree with each other.
NutriStack’s own interaction assessment for this pair is not published here. It has not completed qualified-human clinical review, so it is withheld from search. See the publication gate.
Nothing here is medical advice. Decisions about prescription medication and supplements belong with your prescriber or pharmacist, who can see your full regimen.
The research
8 studies naming L-Glutathione and Vitamin C.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
Journal of developmental and behavioral pediatrics : JDBP · 2025 · PMID 39960783
Randomized Controlled Trial
“Treatment with glutathione or glutathione in combination with vitamin C and N-acetylcysteine did not result in improvements in behavior or biologic measures. The positive trends over the course of the study were likely due to the placebo effect or decreased anxiety associated with the study routine.”
Names both L-Glutathione and Vitamin C in its title.
The Journal of dermatological treatment · 2025 · PMID 41117156
Randomized Controlled Trial
“The hyaluronate-based combination therapy effectively improved POH, demonstrating significant esthetic enhancement and quality of life improvement. This minimally invasive approach proved safe, effective, and highly satisfactory, presenting a promising treatment option for periorbital hyperpigmentation.”
Names both L-Glutathione and Vitamin C in its title.
Physical activity and nutrition · 2023 · PMID 37946445
“Studies on the effects of vitamin C and glutathione intake on exercise have been conducted using diverse approaches; however, the results have not been consistent. Although an additive effect is anticipated with the combined intake of vitamin C and glutathione, research on this topic is currently insufficient, and further studies are required.”
Names both L-Glutathione and Vitamin C in its title.
The Journal of biological chemistry · 1994 · PMID 8144521
ReviewAnimal study
Names both L-Glutathione and Vitamin C in its title.
Limitations
What this evidence cannot tell you.
Search-based evidence indexes have real limits, and it is worth being explicit about them:
Selection. These records were found by searching PubMed titles and abstracts for both substance names alongside interaction and pharmacokinetic terms. Relevant work that phrases things differently, or is not indexed in PubMed, will be missing.
No effect size. The quoted conclusions are the authors’ words about their own study. We have not extracted effect direction or magnitude, and a single study’s conclusion is not a consensus.
Population mismatch. Findings in healthy volunteers, animals, or a specific patient group may not transfer to you, your dose, or your formulation.
Absence is not safety. Few published studies means the combination is under-studied, which is not the same as established as safe.
Nearby evidence
Other pairs with published research.
Pages covering L-Glutathione or Vitamin C alongside a different substance.
NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers L-Glutathione, Vitamin C, and several hundred other substances.
The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
