Supplement researchSourced from PubMed and NIH
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Supplement × Supplement·Evidence index

Vitamin C and Vitamin E: what the research found

PubMed indexes 8 records that name Vitamin C and Vitamin E together, either in the title or in an interaction, co-administration, or pharmacokinetic context. The key findings come first, in the authors’ own words, followed by every study with its design and PubMed link.

A summary of published research, not medical advice. A pharmacist can check any combination against your full list of medicines and supplements.

Key findings

What the studies concluded.

Reviews and human studies first. Each quote is the authors’ own conclusion about their study, not a NutriStack assessment, and a single study is not a consensus.

“This study suggests that VitC and VitE can improve the spousal pregnancy rate and semen parameters in infertile men without AEs.”

Zhou et al. · 2022 · Review or meta-analysis · details

“No significant association was found between vitamin C and risk of bladder cancer in the dose-response analysis. Based on the dose-response analysis, the risk of bladder cancer might be inversely associated with vitamin D and E (especially α-Tocopherol), but positively associated with γ-Tocopherol.”

Chen et al. · 2015 · Review or meta-analysis · details

“The systematic review of the literature does not support the hypothesis that the use of supplements of vitamin C or vitamin E in the doses tested helps prevent and/or treat cancer in the populations tested. There were isolated findings of benefit, which require confirmation.”

The research

8 studies naming Vitamin C and Vitamin E.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

Effects of vitamin E and vitamin C on male infertility: a meta-analysis.

International urology and nephrology · 2022 · PMID 35604582

Meta-AnalysisHuman subjects

“This study suggests that VitC and VitE can improve the spousal pregnancy rate and semen parameters in infertile men without AEs.”

Zhou et al. · Authors' conclusion

Names both Vitamin C and Vitamin E in its title.

Association of vitamin C, vitamin D, vitamin E and risk of bladder cancer: a dose-response meta-analysis.

Scientific reports · 2015 · PMID 25905583

Meta-AnalysisHuman subjects

“No significant association was found between vitamin C and risk of bladder cancer in the dose-response analysis. Based on the dose-response analysis, the risk of bladder cancer might be inversely associated with vitamin D and E (especially α-Tocopherol), but positively associated with γ-Tocopherol.”

Chen et al. · From the abstract

Names both Vitamin C and Vitamin E in its title.

Antioxidants vitamin C and vitamin e for the prevention and treatment of cancer.

Journal of general internal medicine · 2006 · PMID 16808775

Meta-AnalysisResearch Support, N.I.H., ExtramuralSystematic ReviewHuman subjects

“The systematic review of the literature does not support the hypothesis that the use of supplements of vitamin C or vitamin E in the doses tested helps prevent and/or treat cancer in the populations tested. There were isolated findings of benefit, which require confirmation.”

Coulter et al. · Authors' conclusion

Names both Vitamin C and Vitamin E in its title.

Vitamin C and vitamin E for Alzheimer's disease.

The Annals of pharmacotherapy · 2005 · PMID 16227450

Meta-AnalysisReviewHuman subjects

“In the absence of prospective, randomized, controlled clinical trials documenting benefits that outweigh recently documented morbidity and mortality risks, vitamin E supplements should not be recommended for primary or secondary prevention of AD. Although the risks of taking high doses of vitamin C are lower than those with vitamin E, the lack of consistent efficacy data for vitamin C in preventing or treating AD should discourage its routine use for this purpose.”

Boothby et al. · Authors' conclusion

Names both Vitamin C and Vitamin E in its title.

Potential antiatherogenic mechanisms of ascorbate (vitamin C) and alpha-tocopherol (vitamin E).

Circulation research · 2000 · PMID 10969031

Comparative StudyReviewHuman subjects

“However, this pro-oxidant activity of alpha-tocopherol is prevented by ascorbate acting as a coantioxidant. Therefore, an optimum vitamin C intake or body status may help protect against atherosclerosis and its clinical sequelae, whereas vitamin E may only be effective in combination with vitamin C.”

Carr et al. · From the abstract

Names both Vitamin C and Vitamin E in its title.

Regulation of gut microbiota by vitamin C, vitamin E and β-carotene.

Food research international (Ottawa, Ont.) · 2023 · PMID 37254375

Review

“Overall, VC, VE and βC can provide health benefits to the host by modulating the composition and metabolic activity of the gut microbiota, improving intestinal barrier function and maintaining the normal function of the immune system. Two perspectives are proposed for future studies: i) roles of known antioxidant activity of vitamins in regulating the gut microbiota and its molecular mechanism need to be further studied; ii) causal relationships between the regulatory…”

Li et al. · From the abstract

Names both Vitamin C and Vitamin E in its title.

Synergistic activity of vitamin-C and vitamin-E to ameliorate the efficacy of stored erythrocytes.

Transfusion clinique et biologique : journal de la Societe francaise de transfusion sanguine · 2023 · PMID 36084917

Human subjects

“Vitamin-C and Vitamin-E have been beneficial in terms of hemoglobin, antioxidants, protein & lipid oxidations and superoxides in stored erythrocytes. Therefore, this study provides new avenues for the development of effective storage solutions which will have a clinical impact in erythrocyte transfusions.”

Pallavi et al. · Authors' conclusion

Names both Vitamin C and Vitamin E 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:

How to read this page

A literature summary, not guidance.

NutriStack

Track what you actually take.

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 Vitamin C, Vitamin E, and several hundred other substances.

Log your routine, get reminders at the times you choose, and scan a label to add a product. The checker is a research and organisation tool, not a clinical decision aid.

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.