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Vitamin E
Bottom line
In our scoring, Vitamin E rates mixed evidence: the evidence is mixed for age-related macular degeneration (AMD) slowing. Our top-scored product is Solgar Vitamin E 268mg (400 IU) Mixed Tocopherols (87/100), about $0.14 a day at a clinical dose of 100-200 IU. Bottom line: promising but not settled, so manage expectations. This is our opinion, not medical advice; talk to your clinician before starting.
Here's the short version before you spend anything: most people don't need a vitamin E supplement.
- Evidence
- Mixed Evidence
- Category
- Vitamins & Minerals
- Best form
- natural d-alpha-tocopherol (d-alpha)
- Effective dose
- 100-200 IU (67-134mg) of natural d-alpha-tocopherol daily
- Lab tested
- 8 of 8 products
- Category
- Vitamins & Minerals
- Best form
- natural d-alpha-tocopherol (d-alpha)
- Effective dose
- 100-200 IU (67-134mg) of natural d-alpha-tocopherol daily
- Lab tested
- 8 of 8 products
Key takeaways
- →Cardiovascular benefit didn't hold up - real evidence is narrower: immune function in older adults, AMD slowing as part of AREDS, and NAFLD at 800 IU under medical supervision.
- →Use natural d-alpha (twice the bioavailability of synthetic dl-alpha) with mixed tocopherols - alpha-only products can lower gamma levels by competitive displacement.
- →Solgar 400 IU mixed tocopherols ($0.14/day) is the top pick - natural d-alpha with every tocopherol disclosed; NOW Foods mixed tocopherols ($0.12/day) is the value play.
- →Skip if you're on warfarin, statins, planning surgery within 2 weeks, or a smoker; doses above 400 IU/day were tied to higher all-cause mortality.
What Is Vitamin E?
Here's the short version before you spend anything: most people don't need a vitamin E supplement. The reputation it carries - the heart-health pill of the 1990s - came from early studies that bigger, better trials later overturned. The large HOPE trial (9,541 patients followed for 4.5 years) found 400 IU daily did nothing for cardiovascular events, and its HOPE-TOO follow-up found a borderline increase in heart failure risk. A 2005 meta-analysis pooling 135,000 patients linked doses above 400 IU/day to increased all-cause mortality. So the headline reason people reach for it no longer holds up.
The cardiovascular story is worth understanding because it's the cautionary tale behind the 1990s hype. HOPE was big - 9,541 people over 4.5 years - and gave 400 IU of natural vitamin E to people already at risk, exactly the group that should have benefited if it worked. It didn't beat placebo, and the follow-up nudged heart failure risk the wrong way. When a well-built trial on the most likely-to-benefit population comes up empty, that's about as clear an answer as supplement research gives you.
So where does vitamin E actually earn its place? A few specific situations. Correcting a real deficiency (a meaningful slice of the population eats less than the EAR). Immune function in older adults, where several randomized trials support a modest improvement. And eye health, as one ingredient in the AREDS formula that slows AMD progression - not vitamin E on its own. Rubbed on the skin rather than swallowed, it has separate and stronger evidence for the skin barrier.
If you do buy it, the form on the label matters more here than with most supplements. Natural d-alpha-tocopherol (you'll see "d-alpha" on the bottle) is absorbed about twice as well as the synthetic version, dl-alpha-tocopherol - so the "d" versus "dl" is the detail to check. Gamma-tocopherol, the form your food gives you most of, works through different antioxidant pathways than alpha and gets stripped out of many cheap products. A pill that's alpha-only is, in our view, a less complete version of what you'd eat. Mixed tocopherols are the better formulation.
One last thing, and it's a safety point, not a nitpick: dose. That 2005 meta-analysis of 135,000 patients tied doses above 400 IU/day to higher all-cause mortality. Low-dose vitamin E isn't the concern - megadosing is, and it isn't supported. The RDA is 15mg (22.4 IU). Doses up to 150-200 IU look safe and can cover the common shortfall without wading into megadose territory.
Does It Work? The Evidence
How A-F grades workVitamin E earns a Mixed Evidence rating: the research is suggestive but not settled. Its best-supported use so far is age-related macular degeneration (AMD) slowing (grade A), but the evidence across claims is mixed - each is graded on its own below.
Cardiovascular disease prevention
HOPE trial (Yusuf et al. 2000, NEJM; PMID 10639540): 9,541 patients, no CVD benefit. HOPE-TOO (Lonn et al. 2005): borderline increased heart failure. Multiple meta-analyses confirm no CV benefit.
Age-related macular degeneration (AMD) slowing
AREDS trial (NEI, 2001): combination formula including 400 IU vitamin E reduced risk of advanced AMD by 25% in intermediate AMD patients. Part of a multi-ingredient formula.
Cancer prevention
SELECT trial (Lippman et al. 2009, JAMA; PMID 19066370): 400 IU alpha-tocopherol increased prostate cancer risk. No evidence for other cancer types. Not recommended for cancer prevention.
Antioxidant / oxidative stress reduction
Mechanistic evidence is clear. Clinical outcomes from antioxidant supplementation have not consistently translated to disease prevention in well-nourished populations.
Immune function in older adults
Meydani et al. 1997 (JAMA; PMID 9134944): 200 IU improved DTH response in elderly. Meydani et al. 2004 meta-analysis confirmed improved immune markers in elderly.
Nonalcoholic fatty liver disease (NAFLD)
PIVENS trial (Sanyal et al. 2010, NEJM; PMID 20427778): 800 IU/day improved liver histology in non-diabetic NAFLD patients. Guideline-supported for this specific indication.
| Grade | Claimed Benefit | Key Studies | Our Verdict |
|---|---|---|---|
| A | Cardiovascular disease prevention | HOPE trial (Yusuf et al. 2000, NEJM; PMID 10639540): 9,541 patients, no CVD benefit. HOPE-TOO (Lonn et al. 2005): borderline increased heart failure. Multiple meta-analyses confirm no CV benefit. | Ineffective |
| A | Age-related macular degeneration (AMD) slowing | AREDS trial (NEI, 2001): combination formula including 400 IU vitamin E reduced risk of advanced AMD by 25% in intermediate AMD patients. Part of a multi-ingredient formula. | Early Signal |
| A | Cancer prevention | SELECT trial (Lippman et al. 2009, JAMA; PMID 19066370): 400 IU alpha-tocopherol increased prostate cancer risk. No evidence for other cancer types. Not recommended for cancer prevention. | Ineffective |
| B | Antioxidant / oxidative stress reduction | Mechanistic evidence is clear. Clinical outcomes from antioxidant supplementation have not consistently translated to disease prevention in well-nourished populations. | Supported |
| B | Immune function in older adults | Meydani et al. 1997 (JAMA; PMID 9134944): 200 IU improved DTH response in elderly. Meydani et al. 2004 meta-analysis confirmed improved immune markers in elderly. | Early Signal |
| B | Nonalcoholic fatty liver disease (NAFLD) | PIVENS trial (Sanyal et al. 2010, NEJM; PMID 20427778): 800 IU/day improved liver histology in non-diabetic NAFLD patients. Guideline-supported for this specific indication. | Early Signal |
How to Choose: Forms, Doses & What Matters
Clinical dose: 100-200 IU (67-134mg) of natural d-alpha-tocopherol daily; mixed tocopherols preferred over alpha alone; doses above 400 IU not recommended
Best forms: natural d-alpha-tocopherol (d-alpha), mixed tocopherols (d-alpha + gamma + delta + beta), tocotrienols as adjunct
Take it with a meal that has some fat in it. Vitamin E is fat-soluble, so a bit of dietary fat alongside it improves absorption a lot. For everyday supplementation, 100-200 IU of natural d-alpha-tocopherol once a day is a sensible target. If you're taking it for NAFLD, that's the PIVENS protocol (800 IU), and it should happen under medical supervision, not on your own. For eye health, use the actual AREDS formula rather than standalone vitamin E - the eye evidence is for the combination, not the single ingredient. When you're choosing a bottle, look for 'd-alpha' (natural) over 'dl-alpha' (synthetic), and pick mixed tocopherols over alpha-only. And unless a doctor has a specific reason for it, don't sit at doses above 400 IU long-term.
Who Should Take Vitamin E?
A short list of people really do get something from supplementing, and you'll usually know if you're on it. If you have a confirmed deficiency - rare, but it shows up with fat malabsorption conditions like Crohn's, cystic fibrosis, or liver disease - this is your case. Older adults thinking about immune function have a reasonable shot at modest benefit at 200 IU, backed by several trials. If you have intermediate AMD and your eye doctor already has you on the AREDS formula, vitamin E is part of that. If you've been told you have nonalcoholic fatty liver disease (NAFLD), there's evidence at 800 IU, but only under medical supervision. And if you eat a very low-fat diet or skip the foods that carry it - sunflower seeds, almonds, and vegetable oils are the main dietary sources - you may simply not be getting enough.
Who Should Avoid It?
Not for everyone
Side Effects & Safety
Product Scores
8 products scored on dosing accuracy, third-party testing, cost per effective dose, and label transparency.
The Scorecard: 8 Products Compared
Solgar Vitamin E 268mg (400 IU) Mixed Tocopherols
Solgar$13.74 ÷ 98 days at 268mg/day (1 serving × 268mg)
Reliable brand, clean mixed tocopherols formulation. One of the better-made vitamin E products at a reasonable price.
Prices checked 2026-06-10. Cost shown is per clinically effective daily dose, not per pill.
Sports Research Vitamin E 400 IU with Organic Coconut Oil
Sports Research$7.59 ÷ 95 days at 268mg/day (1 serving × 268mg)
Coconut oil carrier improves fat-soluble absorption. Natural form. Non-GMO verified. Good all-around option at a mid-range price.
Prices checked 2026-04-01. Cost shown is per clinically effective daily dose, not per pill.
Pure Encapsulations Vitamin E (with Mixed Tocopherols)
Pure Encapsulations$37.50 ÷ 89 days at 268mg/day (1 serving × 268mg)
Best option for those with allergies or sensitivities who need certainty about excipients. Practitioner-grade quality.
Prices checked 2026-06-10. Cost shown is per clinically effective daily dose, not per pill.
NOW Foods Natural Vitamin E 400 IU Mixed Tocopherols
NOW Foods$11.60 ÷ 97 days at 268mg/day (1 serving × 268mg)
Best-value mixed tocopherols product. Natural form with gamma and delta tocopherols included - more complete than alpha-only options.
Prices checked 2026-06-10. Cost shown is per clinically effective daily dose, not per pill.
Nature Made Vitamin E 180mg (400 IU)
Nature Made$4.19 ÷ 105 days at 180mg/day (1 serving × 180mg)
USP Verified but uses synthetic form at a dose above the cautionary threshold. Fine for established AREDS use; less ideal for general supplementation.
Prices checked 2026-04-01. Cost shown is per clinically effective daily dose, not per pill.
Life Extension Gamma E Mixed Tocopherols & Tocotrienols
Life Extension$30.00 ÷ 60 days at 215mg/day (1 serving × 215mg)
Best choice for those specifically seeking gamma-tocopherol. Well-reasoned formulation backed by Life Extension's research focus, but in our view the per-day cost is hard to justify unless gamma-tocopherol is specifically what you want.
Prices checked 2026-06-10. Cost shown is per clinically effective daily dose, not per pill.
Nutricost Vitamin E 400 IU
Nutricost$5.59 ÷ 280 days at ~230mg/day (0.9 servings × 268mg)
Cheapest option by a wide margin but synthetic form and alpha-only formulation limit its appeal. Fine if cost is the only consideration.
Prices checked 2026-04-01. Cost shown is per clinically effective daily dose, not per pill.
Thorne Vitamin E (with Mixed Tocopherols) 200 IU
Thorne$14.00 ÷ 61 days at 134mg/day (1 serving × 134mg)
The 200 IU dose is the right call - below the cautionary threshold while still providing meaningful supplementation. Best choice if you want to minimize dose concerns.
Prices checked 2026-04-01. Cost shown is per clinically effective daily dose, not per pill.
Full Comparison
| Category | Solgar Vitamin E 268mg (400 IU) Mixed Tocopherols Solgar | Sports Research Vitamin E 400 IU with Organic Coconut Oil Sports Research | Pure Encapsulations Vitamin E (with Mixed Tocopherols) Pure Encapsulations | NOW Foods Natural Vitamin E 400 IU Mixed Tocopherols NOW Foods | Nature Made Vitamin E 180mg (400 IU) Nature Made | Life Extension Gamma E Mixed Tocopherols & Tocotrienols Life Extension | Nutricost Vitamin E 400 IU Nutricost | Thorne Vitamin E (with Mixed Tocopherols) 200 IU Thorne |
|---|---|---|---|---|---|---|---|---|
| Brand Score | 87/100 | 86/100 | 86/100 | 85/100 | 82/100 | 82/100 | 73/100 | 93/100Winner |
| Dosing & Form | 21/25 | 20/25 | 22/25 | 20/25 | 18/25 | 23/25 | 14/25 | 25/25Winner |
| Purity | 21/25 | 21/25 | 23/25Winner | 20/25 | 23/25 | 21/25 | 18/25 | 23/25 |
| Value | 21/25 | 22/25 | 16/25 | 22/25 | 22/25 | 14/25 | 25/25Winner | 21/25 |
| Transparency | 24/25 | 23/25 | 25/25Winner | 23/25 | 19/25 | 24/25 | 16/25 | 24/25 |
| Cost/Day | $0.14 | $0.08 | $0.42 | $0.12 | $0.04 | $0.50 | $0.02Winner | $0.23 |
| Dose/Serving | 268mg | 268mg | 268mg | 268mg | 180mg | 215mg | 268mg | 134mg |
| Form | natural d-alpha + mixed tocopherols | natural d-alpha-tocopherol | natural d-alpha + mixed tocopherols | natural d-alpha + mixed tocopherols | dl-alpha-tocopherol (synthetic) | gamma-dominant mixed tocopherols + d-alpha | dl-alpha-tocopherol (synthetic) | natural d-alpha + mixed tocopherols |
| Third-Party Tested | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes |
| Proprietary Blend | No | No | No | No | No | No | No | No |
Frequently Asked Questions
Does vitamin E prevent heart disease?
No. The HOPE trial and multiple subsequent large RCTs have found no cardiovascular benefit from vitamin E supplementation. The early observational studies that suggested a benefit have not been confirmed in randomized controlled trials. If cardiovascular protection is your goal, vitamin E is not the supplement to use.
What is the difference between natural and synthetic vitamin E?
Natural vitamin E is labeled as 'd-alpha-tocopherol' (single 'd' prefix). Synthetic is labeled 'dl-alpha-tocopherol' (dl prefix). Natural d-alpha has approximately twice the bioavailability of the synthetic form - the body retains it more effectively. When comparing products, a 100 IU natural d-alpha dose is roughly equivalent to 200 IU synthetic dl-alpha. Always choose 'd-alpha' over 'dl-alpha' when given the choice.
Should I take alpha-tocopherol or mixed tocopherols?
Mixed tocopherols are the better choice. Food sources of vitamin E contain all four tocopherol forms - alpha, beta, gamma, and delta. Gamma-tocopherol, the most abundant form in the American diet, has distinct antioxidant mechanisms and may inhibit peroxynitrite, which alpha-tocopherol cannot. Supplementing only alpha-tocopherol can actually lower gamma-tocopherol levels in the blood by competitive displacement. Mixed tocopherol products are more representative of what you'd get from food.
Is 400 IU of vitamin E safe?
It is not clearly unsafe, but 400 IU is the dose where the meta-analytic signal for increased mortality begins to appear. A 2005 meta-analysis of 135,000 patients found increased all-cause mortality at doses of 400 IU and above. The tolerable upper limit is set at 1,000mg (1,500 IU), but 'upper limit' means the highest dose with no observed adverse effect - not an optimal dose. For general supplementation, 100-200 IU of natural d-alpha is more defensible than 400 IU.
What foods are highest in vitamin E?
Sunflower seeds (37mg per 100g), almonds (26mg), sunflower oil (41mg per 100ml), wheat germ oil (149mg per 100ml), and hazelnuts (15mg). The primary dietary sources in the US are vegetable oils and nuts. People who avoid these foods or eat very low-fat diets are at greatest risk of insufficient vitamin E intake. Most Westerns consume below the Estimated Average Requirement of 12mg/day.
Related Supplements
Related Reading
Related Articles
Sources
- Yusuf S, et al. Vitamin E supplementation and cardiovascular events in high-risk patients. NEJM. 2000;342(3):154-160.
- Lonn E, et al. Effects of long-term vitamin E supplementation on cardiovascular events and cancer. JAMA. 2005;293(11):1338-1347.
- Miller ER 3rd, et al. Meta-analysis: high-dosage vitamin E supplementation may increase all-cause mortality. Ann Intern Med. 2005;142(1):37-46.
- Lippman SM, et al. Effect of selenium and vitamin E on risk of prostate cancer and other cancers (SELECT). JAMA. 2009;301(1):39-51.
- Meydani SN, et al. Vitamin E supplementation and in vivo immune response in healthy elderly subjects. JAMA. 1997;277(17):1380-1386.
- Sanyal AJ, et al. Pioglitazone, vitamin E, or placebo for nonalcoholic steatohepatitis (PIVENS). NEJM. 2010;362(18):1675-1685.
- Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E and beta carotene for age-related cataract and vision loss (AREDS). Arch Ophthalmol. 2001.
- NIH Office of Dietary Supplements. Vitamin E Fact Sheet for Health Professionals. Updated 2023.
Scores and tiers are our independent opinion, formed by applying a published rubric to label data, third-party certifications, and the research record. They are not statements of objective fact about a product and not a lab test. Where we report a brand-specific fact, it comes from a cited source or a public certification; where verification is missing, we say so rather than assume a result.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before starting any supplement regimen.