◂ Library/Essential Vitamin
Essential Vitamin⚜ Compound

d-Alpha Tocopherol

01 / OVERVIEW

What this compound does

WHAT IT DOES

Vitamin E is a nutrient your body needs to help protect your cells from damage. It acts like a shield for your cell walls, keeping them healthy. It also helps your immune system work properly and supports your skin and eyes.

KEY BENEFITS
Protects cells from everyday wear and tear
Supports a healthy immune system
Helps keep skin looking vibrant
Promotes eye health as you age
May reduce inflammation in the body
BEST FOR
  • • People looking to support overall antioxidant defense
  • • Adults with dry or aging skin
  • • Individuals with conditions linked to oxidative stress
  • • Those taking fish oil to protect fats from oxidation
WHAT TO EXPECT

Vitamin E works slowly, as part of your daily nutrient supply. You won't feel a sudden effect, but over weeks to months it helps maintain cell health and supports your immune system.

WHO SHOULD AVOID THIS
  • • People taking blood thinners like warfarin
  • • Those about to undergo surgery (risk of bleeding)
  • • Anyone with a vitamin E deficiency disorder is rare—most should get it from food
MYTHS & FACTS
Myth: Vitamin E cures or prevents heart disease.
Fact: Large clinical trials have not shown that vitamin E supplements prevent heart attacks or strokes. Antioxidant effects seen in test tubes don't always translate to humans.
Myth: More vitamin E is always better and safe.
Fact: High doses (≥400 IU/day) can increase the risk of bleeding, especially if taken with blood thinners. The body regulates absorption, and excess may be harmful.
Myth: Vitamin E supplements improve skin if taken orally.
Fact: While vitamin E is important for skin health, oral supplements have limited evidence for cosmetic benefits. Topical application may have more direct effects for skin dryness.
✦ Card Stats
DOSE
15-100 mg daily (22-150 IU)
Evidence
—
Studies indexed7
How it's made

Production details below.

03 / DOSAGE

How much, when

MAINTENANCE

15-100 mg daily (22-150 IU)

Take with dietary fat (e.g., a meal containing oils, nuts, or avocado) to maximize absorption; split doses if >100 mg

TIMING

d-Alpha Tocopherol — Any dose

Take with food (high-fat meal) for fat-soluble absorption

02 / EVIDENCE

Peer-reviewed studies

  • PMID: 12368522

    Antioxidant protection

    Vitamin E reduces lipid peroxidation markers (e.g., F2-isoprostanes) by 20-30% in healthy adults (RCT, n=40, 8 weeks, 400 IU/day).

    A
  • PMID: 23744342

    No CVD benefit

    Meta-analysis of 15 RCTs found no significant reduction in major cardiovascular events with vitamin E supplementation (RR 0.99, 95% CI 0.92-1.06).

    A
  • PMID: 8993480

    Immune function in elderly

    Supplementation with 200 mg/day of vitamin E improved T-cell function and increased antibody response to vaccines in older adults (RCT, n=161, 1 year).

    A
  • PMID: 19072642

    Skin health improvement

    Vitamin E (400 IU/day) combined with vitamin C reduced facial wrinkling and photoaging over 6 months compared to placebo (RCT, n=64).

    B
  • PMID: 21427363

    Cancer prevention null

    Large trial (SELECT) found no reduction in prostate cancer risk with vitamin E; actually a 17% increased risk with 400 IU/day (HR 1.17, 99% CI 1.004-1.36).

    A
  • PMID: 29549306

    Cognitive decline unclear

    Observational studies suggest lower vitamin E intake is linked to higher dementia risk, but RCTs show no clear benefit from supplements (meta-analysis, 5 RCTs).

    B
  • PMID: 24241141

    Eye health benefit

    The AREDS2 trial (n=4203) found that vitamin E (combined with other antioxidants) slowed progression of age-related macular degeneration by ~25% over 5 years.

    A
  • PMID 34122682 · 2021RCT

    The Effect of Combined Vitamin C and Vitamin E Supplementation on Oxidative Stress Markers in Women with Endometriosis: A Randomized, Triple-Blind Placebo-Controlled Clinical Trial

    B
  • PMID 34999335 · 2022RCT

    Omega-3 fatty acid, carotenoid and vitamin E supplementation improves working memory in older adults: A randomised clinical trial

    B
  • PMID 29376219 · 2018Meta-Analysis

    Selenium for preventing cancer

    B
  • PMID 34871765 · 2022Narrative Review

    Vitamin E and preterm infants

    B
04 / INTERACTIONS

Medicine interactions

  • Warfarin· blood_thinner

    Vitamin E antagonizes vitamin K-dependent clotting factors, enhancing warfarin effect.

    → Avoid high-dose vitamin E (>400 IU/day); monitor INR closely if used.

    HIGH

  • Aspirin· blood_thinner

    Additive antiplatelet effect increases bleeding risk.

    → Use with caution; consider lower vitamin E doses.

    MODERATE

  • Chemotherapy (certain agents)· statin

    Vitamin E may interfere with the oxidative effect of some chemotherapies (e.g., doxorubicin).

    → Consult oncologist; avoid antioxidant supplements during active treatment.

    MODERATE

  • Orlistat· blood_thinner

    Orlistat reduces fat absorption, decreasing vitamin E absorption.

    → Take vitamin E at least 2 hours apart from orlistat; consider monitoring vitamin E levels.

    MODERATE

  • Cholestyramine· blood_thinner

    Bile acid sequestrants reduce absorption of fat-soluble vitamins including E.

    → Take vitamin E several hours before or after cholestyramine.

    MODERATE

This page is a reference summary, not a prescription. Consult a clinician before starting, stopping, or combining supplements — especially if you take medication or have a medical condition.