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Vitamin E (Tocopherols & Tocotrienols)
Lipid-soluble antioxidant that shields cell membranes from oxidative damage.
What the evidence says
Vitamin E appears to help in 9 of 9 studies with measurable effects — the evidence leans clearly favourable.
Most evidence is from high-quality meta-analyses and randomised trials published 1978–2026 with a typical study size of 504 participants.
Based on 567 studies · 87 meta-analyses · 413 RCTs · 313,605 total participants
Confidence
High confidenceWhat the studies found
By outcome
Despite a very large meta-analytic base, vitamin E shows neutral or conflicting results for cardiovascular and mortality endpoints with some harm signals, leaving only niche benefits like NAFLD liver enzymes.
110 trials ongoing or recruiting · 579 completed on ClinicalTrials.gov
75 of the completed trials have posted results
Registered trials show research momentum for Vitamin E, not proof of effect — a registration is a plan, and posted results are sponsor-reported, not peer-reviewed. They are never counted toward the evidence rating above.
Browse these trials on ClinicalTrials.govClinicalTrials.gov · as of Oct 2026
Under EU law (Reg. 1924/2006), EFSA reviews whether a specific health claim for Vitamin E meets the evidence standard. These are independent regulatory decisions on claims — not studies, and never counted toward the evidence score above.
Authorised claims
“Vitamin E contributes to the protection of cells from oxidative stress”
Not authorised by EFSA
“Vitamin E Protects the lens”
“Vitamin E is an antioxidant that protects the body's cells”
“Vitamin E Necessary to maintain energy and general vitality”
“Vitamin E Necessary for healthy teeth, bones, hair, skin and nails”
“Vitamin E Can neutralise free radicals and help maintain a healthy heart”
“Vitamin E Helps memory and perception retention, especially in the elderly”
“Vitamin E acetate (D,L- alpha tocopherol acetate) Support the microcirculation and the oxygenation of the scalp”
“Vitamin E [In German] Wichtig für Blutfließeigenschaften. Clarification provided Important for blood flow parameters”
“Vitamin E Due to Vitamin E favourable effects on free radicals it could support reducing the age related cognitive decline”
“Not authorised” means the specific claim wording did not meet the EU’s evidence standard — often a matter of dossier or phrasing, not proof of no effect. EFSA judges marketing claims and is kept separate from our study-based evidence score.
Source: EU Register of nutrition and health claims (European Commission / EFSA) · register snapshot Feb 2013
Vitamin E is a family of eight fat-soluble compounds: four tocopherols and four tocotrienols. Alpha-tocopherol is the most biologically active form in humans. It functions primarily as a lipid-soluble antioxidant, protecting cell membranes from oxidative damage.
It's important for skin health, immune function, and may support cardiovascular health. Natural and synthetic forms are labelled and retained differently, so check the exact form on the label.
Protects cell membranes from oxidation
Enhances immune cell function
Protects skin from UV and oxidative damage
How Vitamin E works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
Showing the best-supported pathways — 1 lower-evidence nodes hidden for clarity.
Tell the prescriber before adding or changing vitamin E while using a blood thinner. Review the exact product and dose, and watch for bleeding. No universal safe dose is established. Do not stop or change a prescribed blood thinner, or vitamin E your clinician prescribed, yourself.
May enhance anticoagulant effects
May interfere with some treatments; consult oncologist
May reduce some statin side effects
Tip: Review the vitamin E dose and all other supplements with a clinician. Tell the surgical and anaesthetic team the exact product, dose and last dose well before an operation. Follow their instructions about stopping and restarting it.
Tip: Take with food
Vitamin E has an evidence score of 5/10 — moderate evidence based on 567 indexed studies, including 27 meta-analyses. Lipid-soluble antioxidant that shields cell membranes from oxidative damage. Representative study: PMID 38296289.
Dosing for Vitamin E: No routine vitamin E supplement dose is recommended here for longevity. Use a product-specific dose only for a defined indication under an agreed clinical plan, taking account of the exact form and all sources.
The best time to take Vitamin E is with meals. Take it with food. Vitamin E encompasses eight fat-soluble compounds (four tocopherols and four tocotrienols) that require dietary fat, bile acids, and pancreatic lipase for absorption.
No consumer dose of Vitamin E is endorsed, so there is no dose at which it can be called safe. Talk to a healthcare provider before taking it. Reported side effects are uncommon and include increased bleeding risk, nausea. Use caution if any of these apply to you: Vitamin K deficiency; Bleeding disorders; Pregnancy - use with caution.
Omega-3
Probably helpsEssential fatty acids critical for brain health, mood regulation, and reducing inflammation throughout the body.
Vitamin D3
Probably helpsHormone-like vitamin that regulates 1,000+ genes — deficiency is widespread and linked to poor immunity, depression, and bone loss.
Vitamin B6
Too few graded studiesCofactor in 100+ enzyme reactions including serotonin, dopamine, and GABA synthesis — also lowers homocysteine levels.
Pumpkin Seed Oil
Mostly mechanism / observationalA phytosterol-rich cold-pressed oil studied for prostate, hair, and cardiovascular support. The honest verdict: small RCTs show modest BPH, hair, and blood-pressure benefits — but the trials are few and tiny, and it underperforms standard drugs like tamsulosin for BPH.
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Reviewed by Dr. Baher Al Hakim · Last reviewed May 2026 · evidence from 570 studies · how we score · editorial policy
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
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