Evidence-based·Last reviewed May 31, 2026·How we grade evidence

Vitamin E (mixed tocopherols)

VitaminVitamin EBest with a meal

A mixed-tocopherol supplement preserves the natural balance of vitamin E isomers (alpha, beta, gamma, delta), unlike high-dose alpha-tocopherol-only products that displace serum gamma-tocopherol. Clinical-endpoint evidence for vitamin E in any form is mostly null or harmful at high doses; the strongest positive trial (AREDS for AMD) used alpha-tocopherol.

Quick decision guide

May help most

Correcting dietary vitamin E shortfall with a balanced form that doesn't suppress gamma-tocopherol — sensible when supplementing long-term.

Common dosing range

100–200 IU/day total tocopherols (15–30 mg alpha-tocopherol equivalent), with food.

When to expect effects

Plasma tocopherols rise within days; clinical effects unproven for most indications.

Watch out for

Don't take >400 IU/day long-term — increased risk of all-cause mortality, hemorrhagic stroke, prostate cancer (men), and heart failure (cardiac patients).

Evidence snapshot

Maintaining gamma-tocopherol with long-term vitamin EModerate

AMD progression (alpha-only, multi-nutrient)Moderate

Cardiovascular preventionLow

Cancer preventionLow (harm signal)

What is it

Mixed tocopherols are vitamin E supplements containing all four tocopherol forms (alpha, beta, gamma, delta) rather than only alpha-tocopherol. Some formulations also include tocotrienols.

Is it worth it for you?

Use this as a quick fit check, not a diagnosis.

Worth considering if…

You want a daily vitamin E that doesn't displace gamma-tocopherol the way alpha-only products do

You eat very little vegetable oil, nuts, or seeds and want to cover a likely dietary gap

You have intermediate or advanced AMD and your ophthalmologist recommends the AREDS-2 formulation (note: that formula uses alpha-tocopherol, not mixed)

You have a fat-malabsorption condition (cystic fibrosis, cholestatic liver disease, short bowel) and a clinician is dosing vitamin E to correct deficiency

Probably skip if…

You eat a varied diet with vegetable oils, nuts, and seeds — frank vitamin E deficiency is rare in healthy adults

You want it for cardiovascular prevention — large RCTs (HOPE-TOO, GISSI) show no benefit and possible heart-failure harm

You're a man hoping to prevent prostate cancer — SELECT showed a 17% increase in prostate cancer at 400 IU/day alpha-tocopherol

You're on warfarin or other anticoagulants — vitamin E above ~400 IU/day can increase bleeding risk

You're hoping for general anti-aging or longevity benefit — high-dose vitamin E is associated with increased all-cause mortality

Evidence at a glance

Goal	Effect	Best fit	Time
Maintaining gamma-tocopherol on long-term vitamin E Good Evidence	Mixed tocopherols preserve serum gamma-tocopherol and reduce F2-isoprostanes/CRP more than alpha-alone in small RCTs	Adults choosing long-term vitamin E supplementation who want a more physiologically-balanced form	Plasma tocopherols shift within 1–4 weeks
Age-related macular degeneration (slowing progression) Good Evidence	≈25% relative risk reduction for progression to advanced AMD over 5 years vs placebo (AREDS multi-nutrient formulation)	Adults with intermediate AMD or advanced AMD in one eye, taking the full AREDS-2 formulation as recommended by an ophthalmologist	Years (trials measured 5-year progression)
Cardiovascular disease prevention Mixed Evidence	No reduction in major CV events; increased heart failure incidence in high-risk adults (RR 1.13)	None — no population shows clear CV benefit from supplemental vitamin E	Trials ran 4–7 years and found no benefit
Cancer prevention Mixed Evidence	17% relative increase in prostate cancer at 400 IU/day alpha-tocopherol (SELECT extended follow-up)	None — no population shows preventive benefit	Harm emerged after several years of follow-up

Maintaining gamma-tocopherol on long-term vitamin E

Good Evidence

Effect: Mixed tocopherols preserve serum gamma-tocopherol and reduce F2-isoprostanes/CRP more than alpha-alone in small RCTs
Best fit: Adults choosing long-term vitamin E supplementation who want a more physiologically-balanced form
Time: Plasma tocopherols shift within 1–4 weeks

Age-related macular degeneration (slowing progression)

Good Evidence

Effect: ≈25% relative risk reduction for progression to advanced AMD over 5 years vs placebo (AREDS multi-nutrient formulation)
Best fit: Adults with intermediate AMD or advanced AMD in one eye, taking the full AREDS-2 formulation as recommended by an ophthalmologist
Time: Years (trials measured 5-year progression)

Cardiovascular disease prevention

Mixed Evidence

Effect: No reduction in major CV events; increased heart failure incidence in high-risk adults (RR 1.13)
Best fit: None — no population shows clear CV benefit from supplemental vitamin E
Time: Trials ran 4–7 years and found no benefit

Cancer prevention

Mixed Evidence

Effect: 17% relative increase in prostate cancer at 400 IU/day alpha-tocopherol (SELECT extended follow-up)
Best fit: None — no population shows preventive benefit
Time: Harm emerged after several years of follow-up

Evidence for 4 uses

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Maintaining gamma-tocopherol on long-term vitamin E

Mechanism only

Good Evidence

High-dose alpha-tocopherol supplementation lowers serum and tissue gamma-tocopherol — sometimes by 30–50% — by competing for the alpha-tocopherol transfer protein in the liver. Gamma-tocopherol scavenges reactive nitrogen species (peroxynitrite) that alpha-tocopherol can't neutralise. Small mechanistic RCTs of mixed tocopherols (Saldeen 2005, Devaraj 2008) show greater reductions in oxidative-stress and inflammation biomarkers than alpha-only supplementation, but no clinical-endpoint trial of mixed tocopherols has been done.

Effect size

Mixed tocopherols preserve serum gamma-tocopherol and reduce F2-isoprostanes/CRP more than alpha-alone in small RCTs

Time to effect

Plasma tocopherols shift within 1–4 weeks

Best fit

Adults choosing long-term vitamin E supplementation who want a more physiologically-balanced form

Less likely

Anyone targeting a specific clinical endpoint where alpha-tocopherol has direct trial data (AMD progression)

Bottom line: Mixed tocopherols are mechanistically more sensible than alpha-only for daily supplementation, but the clinical-outcome benefit is unproven.

SourceSaldeen et al., 2005 — Nutrition Devaraj et al., 2008 — Free Radical Biology and Medicine Hensley et al., 2004 — Free Radical Biology and Medicine

Age-related macular degeneration (slowing progression)

Disease adjunct

Good Evidence

The AREDS and AREDS2 trials showed that an antioxidant + zinc formulation (originally vitamin C 500 mg, alpha-tocopherol 400 IU, beta-carotene 15 mg, zinc 80 mg, copper 2 mg; AREDS2 replaced beta-carotene with lutein/zeaxanthin) reduces 5-year progression from intermediate to advanced AMD by about 25%. The benefit comes from the combination — vitamin E in isolation has never been shown to slow AMD. Both AREDS arms used alpha-tocopherol, not mixed tocopherols.

Effect size

≈25% relative risk reduction for progression to advanced AMD over 5 years vs placebo (AREDS multi-nutrient formulation)

Time to effect

Years (trials measured 5-year progression)

Best fit

Adults with intermediate AMD or advanced AMD in one eye, taking the full AREDS-2 formulation as recommended by an ophthalmologist

Less likely

Adults without AMD taking vitamin E alone for 'eye health' — no preventive benefit shown

Bottom line: Use the AREDS-2 formula under ophthalmologist guidance — don't substitute a mixed-tocopherol product for the alpha-tocopherol in that formula.

SourceAREDS Research Group, 2001 (AREDS Report 8) — Archives of Ophthalmology AREDS2 Research Group, 2013 — JAMA

Cardiovascular disease prevention

Supplement benefit

Mixed Evidence

The HOPE-TOO trial randomised 9,541 high-risk adults to 400 IU/day natural vitamin E or placebo for a median 7 years — no reduction in cardiovascular events, but a 13% increase in heart failure and a 21% increase in heart-failure hospitalisations. GISSI-Prevention, ATBC, and the Women's Health Study likewise found no benefit. Vitamin E should not be taken for CV prevention.

Effect size

No reduction in major CV events; increased heart failure incidence in high-risk adults (RR 1.13)

Time to effect

Trials ran 4–7 years and found no benefit

Best fit

None — no population shows clear CV benefit from supplemental vitamin E

Less likely

Adults with established cardiovascular disease or heart failure — possible harm signal

Bottom line: Don't take vitamin E for heart-disease prevention. If you have heart failure, avoid doses ≥400 IU/day.

Evidence is mixed

Early observational studies suggested vitamin E intake correlated with lower CV risk, but every large randomised trial has been null or showed harm. The mismatch likely reflects healthy-user bias in cohorts, not a real protective effect.

SourceLonn et al., 2005 (HOPE-TOO) — JAMA· conflicting Miller et al., 2005 — Annals of Internal Medicine· conflicting

SourceLonn et al., 2005 (HOPE-TOO) — JAMA NIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

Cancer prevention

Supplement benefit

Mixed Evidence

The SELECT trial randomised 35,533 men to 400 IU/day alpha-tocopherol, selenium, both, or placebo for prostate-cancer prevention. The trial stopped early for futility; extended follow-up showed a 17% increase in prostate cancer in the alpha-tocopherol arm (1.6 extra cases per 1,000 person-years). For other cancers, vitamin E trials have been null. There is no quality evidence that mixed tocopherols prevent any cancer.

Effect size

17% relative increase in prostate cancer at 400 IU/day alpha-tocopherol (SELECT extended follow-up)

Time to effect

Harm emerged after several years of follow-up

Best fit

None — no population shows preventive benefit

Less likely

Men taking high-dose alpha-tocopherol for prostate-cancer prevention — clear harm signal

Bottom line: Don't use vitamin E for cancer prevention. Men especially should avoid high-dose alpha-tocopherol.

SourceLippman et al., 2009 (SELECT) — JAMA Klein et al., 2011 (SELECT follow-up) — JAMA

How it works

All tocopherols are fat-soluble antioxidants that protect cell membranes from oxidative damage. Alpha-tocopherol is preferentially retained by the body, but gamma-tocopherol — the most common form in the typical Western diet — has some unique chemistry, including the ability to neutralize reactive nitrogen species that alpha-tocopherol does not. When people take large doses of alpha-tocopherol alone, blood levels of gamma-tocopherol drop. Mixed tocopherol supplements aim to maintain a broader spectrum, mimicking what the body would receive from a varied diet rich in vegetable oils, nuts, and seeds.

How to take it

1. Typical dose

• 100–200 IU/day total tocopherols (≈15–30 mg alpha-tocopherol equivalent) for general supplementation • Mixed-tocopherol products typically list a ratio like 200 mg gamma + 100 mg alpha + smaller delta/beta • Stay well below 400 IU/day for long-term use — that's the threshold above which mortality and CV-harm signals appear

2. Higher studied dose

AREDS used 400 IU/day alpha-tocopherol but ONLY as part of the multi-nutrient AMD formulation under ophthalmologist supervision. Studies of mixed tocopherols have generally used 300–500 mg total tocopherols (gamma-rich), but with no long-term safety data at that range.

3. Timing

Take with a meal that contains fat — vitamin E is fat-soluble and absorption can be 3–8× higher with dietary fat than on an empty stomach. Morning or evening, with whatever your largest fat-containing meal is.

4. With food

With food, ideally a meal containing fat (nuts, oils, dairy, eggs, fatty fish).

5. Split dosing

Single daily dose is fine at typical 100–200 IU. No advantage to splitting unless you're taking >400 IU/day, which isn't recommended anyway.

6. How long to try

If supplementing to cover a dietary gap, treat it as ongoing — there's no need to cycle off. For the AREDS-2 formulation in AMD, treatment is indefinite under ophthalmologist care.

What to track

Easy bruising or unusual bleeding (early sign of antiplatelet effect, especially if on other blood thinners)

Headache or fatigue at higher doses

If on warfarin: ask your clinician about INR monitoring — vitamin E can increase warfarin's anticoagulant effect

If you have heart failure: monitor for worsening symptoms (shortness of breath, swelling) and stop if they worsen

Bottom line: Keep it under 200 IU/day for general use. Take with a fatty meal. Don't substitute mixed tocopherols for the alpha-tocopherol in the AREDS-2 formula if you're being treated for AMD.

5 commercial forms

Compare the main delivery options and what they’re best suited for.

Mixed tocopherols (gamma-rich)

Balanced isomers

Contains all four naturally-occurring tocopherols (alpha, beta, gamma, delta) in roughly the proportions found in vegetable oils and nuts. Preserves serum gamma-tocopherol that high-dose alpha-only supplements can suppress. Best choice for long-term general supplementation if you're going to take vitamin E at all.

Maintains physiological isomer balance; small RCTs show greater antioxidant/anti-inflammatory effect than alpha-only.

Natural alpha-tocopherol (d-alpha)

Most studied

Single-isomer vitamin E derived from vegetable oil. The form used in the AREDS/AREDS2 AMD trials and most cardiovascular RCTs. Higher bioactivity per mg than the synthetic form, but at doses ≥400 IU/day it lowers gamma-tocopherol and carries the mortality/prostate-cancer harm signal.

≈1.4× more bioactive than synthetic dl-alpha-tocopherol on a mg basis.

Synthetic alpha-tocopherol (dl-alpha or all-rac)

Inexpensive

A 1:1 mix of eight stereoisomers, only one of which (RRR-alpha) is recognised by the body's alpha-tocopherol transfer protein. Cheapest form, common in multivitamins. Same harm signals at high doses as natural alpha; no advantage over the natural form.

Lower potency per mg — 33 IU synthetic ≈ 22.4 IU natural.

Tocotrienols

Limited data

Vitamin E family with an unsaturated side chain (vs the saturated chain in tocopherols). Promising preclinical data for cholesterol lowering and neuroprotection; few RCTs and inconsistent results. Don't replace mixed tocopherols with tocotrienols based on current evidence.

Absorption variable; clinical-outcome data limited.

Tocopheryl acetate or succinate

Cosmetic-grade

Esterified forms more stable in formulation. Hydrolysed back to free tocopherol in the gut, then absorbed normally. Functionally equivalent to free tocopherol once absorbed.

Bioavailable after gastric hydrolysis; common in inexpensive multivitamins.

Safety

Know the common side effects, key cautions, and who should avoid it.

Common side effects

nauseadiarrheaabdominal crampsfatigueweaknessheadacheblurred visionrash

Serious risks

All-cause mortality increase: a meta-analysis of 19 RCTs found doses ≥400 IU/day were associated with ~39 extra deaths per 10,000 persons — risk appears to rise above ~150 IU/day.
SourceMiller et al., 2005 — Annals of Internal Medicine
Increased prostate cancer risk in men: SELECT extended follow-up showed 17% relative increase at 400 IU/day alpha-tocopherol.
SourceKlein et al., 2011 (SELECT follow-up) — JAMA
Heart-failure exacerbation in high-risk adults: HOPE-TOO showed 13% increase in HF and 21% increase in HF hospitalisation at 400 IU/day natural vitamin E.
SourceLonn et al., 2005 (HOPE-TOO) — JAMA
Hemorrhagic stroke risk: high-dose vitamin E (especially >400 IU/day) inhibits platelet aggregation; the Physicians' Health Study II showed a 74% relative increase in hemorrhagic stroke (though absolute risk was small).
SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

Who should avoid it

Adults taking warfarin or other anticoagulants/antiplatelets (aspirin, clopidogrel, NOACs) — vitamin E ≥400 IU/day potentiates the anticoagulant effect and can cause bleeding.
SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet
Adults with vitamin K deficiency or coagulation disorders — vitamin E antagonises vitamin K-dependent clotting factors at high doses.
SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet
Men using high-dose vitamin E for prostate-cancer prevention — clear harm signal from SELECT.
SourceKlein et al., 2011 (SELECT follow-up) — JAMA
Adults with heart failure — possible exacerbation at doses ≥400 IU/day.
SourceLonn et al., 2005 (HOPE-TOO) — JAMA
Pre-surgery patients — stop high-dose vitamin E at least 2 weeks before elective surgery to reduce bleeding risk.
SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

Pregnancy & breastfeeding

Pregnancy RDA is 15 mg/day alpha-tocopherol (same as non-pregnant adults); lactation 19 mg/day. Doses within the RDA from a standard prenatal are safe; high-dose vitamin E supplementation in pregnancy hasn't shown benefit and one large Cochrane review of vitamin E + vitamin C in pregnancy found a possible increase in stillbirth. Don't exceed the RDA without obstetric guidance.

SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

Bottom line: Low-dose mixed tocopherols (≤200 IU/day) appear safe in most adults. Doses ≥400 IU/day are not benign — multiple large trials show increased mortality, prostate cancer, and heart-failure risk.

Interactions

warfarinMajor

Vitamin E ≥400 IU/day potentiates warfarin's anticoagulant effect and can increase bleeding risk. If used together, monitor INR closely and keep vitamin E dose low and stable.

SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

antiplatelet drugs (aspirin, clopidogrel, ticagrelor)Moderate

Additive antiplatelet effect at high vitamin E doses; increased bleeding risk. Keep vitamin E ≤200 IU/day if also on antiplatelets.

SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

direct oral anticoagulants (apixaban, rivaroxaban, dabigatran)Moderate

Theoretical additive bleeding risk; less direct evidence than with warfarin but the same antiplatelet mechanism applies.

SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

statins (with niacin)Moderate

The HATS trial showed antioxidant cocktails (including vitamin E 800 IU) blunted the HDL-raising effect of statin + niacin in coronary disease. Avoid high-dose vitamin E if taking statin + niacin for lipids.

SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

chemotherapy and radiation therapyModerate

High-dose antioxidants including vitamin E may interfere with the oxidative-stress mechanism of some chemo agents and radiation. Discuss with oncology before taking during active cancer treatment.

SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

orlistat and bile-acid sequestrants (cholestyramine, colestipol)Minor

These fat-absorption blockers reduce vitamin E absorption. Take vitamin E at least 2 hours apart, or switch to a water-miscible form under clinician guidance.

SourceNIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet

Protocols featuring Vitamin E (mixed tocopherols)

Evidence-backed routines where Vitamin E (mixed tocopherols) plays a role.

Menopause Support

hormones

The menopausal transition disrupts more than just reproductive hormones — estradiol decline affects sleep, mood, bone density, cardiovascular risk, cognition, and skin. Hormone replacement therapy (HRT/MHT) remains the most effective intervention for moderate-to-severe symptoms and the long-term benefits for bone and cardiovascular health are well-established when started within the first ten years post-menopause. Supplements are first-line for women with mild symptoms, contraindications to HRT, or as a complement to HRT for symptom subsets. Black cohosh has the strongest evidence for vasomotor symptoms (hot flashes); magnesium and omega-3 support sleep, mood, and bone health.

Food sources

Food	Amount	%DV
Wheat germ oil	1 Tbsp (20.3 mg)	135%
Sunflower seeds, dry roasted	1 oz (7.4 mg)	49%
Almonds, dry roasted	1 oz (6.8 mg)	45%
Sunflower oil	1 Tbsp (5.6 mg)	37%
Safflower oil	1 Tbsp (4.6 mg)	31%
Hazelnuts, dry roasted	1 oz (4.3 mg)	29%
Peanut butter	2 Tbsp (2.9 mg)	19%
Peanuts, dry roasted	1 oz (2.2 mg)	15%
Corn oil	1 Tbsp (1.9 mg)	13%
Spinach, boiled	½ cup (1.9 mg)	13%
Broccoli, chopped, boiled	½ cup (1.2 mg)	8%
Soybean oil	1 Tbsp (1.1 mg)	7%
Kiwifruit	1 medium (1.1 mg)	7%
Mango, sliced	½ cup (0.7 mg)	5%
Tomato, raw	1 medium (0.7 mg)	5%

Wheat germ oil

Amount: 1 Tbsp (20.3 mg)
%DV: 135%

Sunflower seeds, dry roasted

Amount: 1 oz (7.4 mg)
%DV: 49%

Almonds, dry roasted

Amount: 1 oz (6.8 mg)
%DV: 45%

Sunflower oil

Amount: 1 Tbsp (5.6 mg)
%DV: 37%

Safflower oil

Amount: 1 Tbsp (4.6 mg)
%DV: 31%

Hazelnuts, dry roasted

Amount: 1 oz (4.3 mg)
%DV: 29%

Peanut butter

Amount: 2 Tbsp (2.9 mg)
%DV: 19%

Peanuts, dry roasted

Amount: 1 oz (2.2 mg)
%DV: 15%

Corn oil

Amount: 1 Tbsp (1.9 mg)
%DV: 13%

Spinach, boiled

Amount: ½ cup (1.9 mg)
%DV: 13%

Broccoli, chopped, boiled

Amount: ½ cup (1.2 mg)
%DV: 8%

Soybean oil

Amount: 1 Tbsp (1.1 mg)
%DV: 7%

Kiwifruit

Amount: 1 medium (1.1 mg)
%DV: 7%

Mango, sliced

Amount: ½ cup (0.7 mg)
%DV: 5%

Tomato, raw

Amount: 1 medium (0.7 mg)
%DV: 5%

Choosing a product

What to look for on the label — and what to be skeptical of.

Look for…

Mixed tocopherols panel: look for amounts of alpha, beta, gamma, and delta tocopherol listed separately (gamma should be ≥50% of total tocopherols in a true mixed product)

'Natural-source' (d-alpha-tocopherol) is more bioactive than synthetic (dl-alpha-tocopherol or all-rac) — about 1.4× more potent on a mg-for-mg basis

Total tocopherols ≤200 IU per softgel — anything higher is hard to keep below the safety threshold

Soybean or sunflower oil as the carrier (vitamin E is fat-soluble; needs a lipid base)

Third-party tested (USP, NSF, ConsumerLab)

Single-ingredient mixed tocopherols if you're tracking dose precisely

Be skeptical of…

'400 IU' or '1,000 IU' alpha-tocopherol products marketed for daily use — at those doses the harm signals (mortality, prostate cancer, heart failure) outweigh any plausible benefit

'Boosts heart health' or 'lowers cholesterol' claims — large RCTs (HOPE-TOO, GISSI) found no CV benefit and possible harm

'Prevents Alzheimer's' or 'slows cognitive decline' — trial evidence is mixed and weak; the one positive moderate-AD trial used 2,000 IU/day which has unacceptable safety risks

'Anti-aging' or 'longevity' framing — the opposite is true at high doses

Tocotrienol-only products marketed as 'more bioavailable vitamin E' — tocotrienols are interesting biochemically but have little clinical-outcome data

Products that list only 'mixed tocopherols' as a total without breaking out the gamma content — could be 90% alpha with a token amount of the others

Frequently asked questions

Are mixed tocopherols worth the extra cost?⌄

Possibly. They more closely mimic dietary intake and avoid depleting gamma-tocopherol that occurs with high-dose alpha-only supplements. Clinical outcome evidence over plain alpha-tocopherol is limited.

Does gamma-tocopherol have unique benefits?⌄

Research suggests it has antioxidant chemistry different from alpha-tocopherol and may have anti-inflammatory effects, but most evidence is preclinical.

Should I take mixed tocopherols if I am on blood thinners?⌄

Probably not, or only with your doctor's approval. The bleeding risk of vitamin E applies to all forms.

Are mixed tocopherols the same as tocotrienols?⌄

No. Tocotrienols are a structurally different vitamin E family. Some mixed-tocopherol products include tocotrienols separately.

References by claim

Cardiovascular disease prevention

NIH Office of Dietary Supplements — Vitamin E — Health Professional Fact Sheet (2024) link

Lonn et al., 2005 (HOPE-TOO) — JAMA (2005) link

Miller et al., 2005 — Annals of Internal Medicine (2005) link

Cancer prevention

Lippman et al., 2009 (SELECT) — JAMA (2009) link

Klein et al., 2011 (SELECT follow-up) — JAMA (2011) link

Age-related macular degeneration (slowing progression)

AREDS Research Group, 2001 (AREDS Report 8) — Archives of Ophthalmology (2001) link

AREDS2 Research Group, 2013 — JAMA (2013) link

Maintaining gamma-tocopherol on long-term vitamin E

Saldeen et al., 2005 — Nutrition (2005) link

Devaraj et al., 2008 — Free Radical Biology and Medicine (2008) link

Hensley et al., 2004 — Free Radical Biology and Medicine (2004) link

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Evidence-based·Last reviewed May 31, 2026·Evidence current as of May 31, 2026·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.