What is the recommended dosage for Vitamin E?

Note: High-dose supplementation no longer recommended based on clinical trial evidence; General: 15 mg/day (22.4 IU)

What are the side effects of Vitamin E?

Potential side effects include: Increased bleeding risk at high doses, Possible increased all-cause mortality at >=400 IU/day, Increased heart failure hospitalization risk (HOPE/HOPE-TOO), Nausea, diarrhea, fatigue at high doses.

What is vitamin E and how may it relate to cardiovascular health?

Vitamin E is a fat-soluble antioxidant that protects lipoproteins from oxidation. While observational studies suggested cardiovascular benefits, large RCTs including HOPE and ATBC did not demonstrate cardiovascular protection from vitamin E supplementation. A meta-analysis suggested high-dose vitamin E (above 400 IU/day) may increase all-cause mortality.

What dosage of vitamin E has been studied for cardiovascular outcomes?

Clinical trials used 100–800 IU of vitamin E (alpha-tocopherol) per day. The HOPE trial used 400 IU daily for 4.5 years. Current evidence does not support high-dose vitamin E supplementation for cardiovascular prevention. The RDA is 15 mg (22.4 IU) of natural alpha-tocopherol.

What are the potential side effects of vitamin E supplements?

High-dose vitamin E may increase bleeding risk, particularly when combined with anticoagulants or antiplatelet drugs. A meta-analysis found increased all-cause mortality at doses above 400 IU/day. Vitamin E may interact with statins, chemotherapy drugs, and blood thinners. The tolerable upper intake level is 1,000 mg (1,500 IU) of natural alpha-tocopherol.

Vitamin E
Vitamin E

vitamin

Diğer adları: Alpha-Tocopherol, d-Alpha-Tocopherol, Mixed Tocopherols, Tocotrienols

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About

Vitamin E is the primary lipid-soluble antioxidant in LDL particles and cell membranes. Despite strong mechanistic rationale, large RCTs have been disappointing. The HOPE trial (9,541 participants) found no cardiovascular benefit at 400 IU/day, and a 2005 meta-analysis found high-dose vitamin E (>=400 IU/day) was associated with increased all-cause mortality. Current AHA guidelines do not recommend vitamin E supplementation.

How It Works

Primary lipid-soluble antioxidant in LDL particles and cell membranes; inhibits LDL oxidation — a key early step in atherogenesis; modulates inflammatory gene expression via NF-kB inhibition; inhibits platelet adhesion and smooth muscle cell proliferation.

Evidence For Conditions

Sağlık Durumu	Derece	Çalışmalar	Katılımcılar
Atherosclerosis	C	15	50000	Görüntüle →

Side Effects

Increased bleeding risk at high doses
Possible increased all-cause mortality at >=400 IU/day
Increased heart failure hospitalization risk (HOPE/HOPE-TOO)
Nausea, diarrhea, fatigue at high doses

Drug & Supplement Interactions

Anticoagulants (increased bleeding risk)
Statins and niacin (may blunt HDL-raising effect)
Chemotherapy and radiation (theoretical interference with oxidative mechanisms)
Vitamin K (may antagonize at high doses)

Kullandığınız tüm takviyeler hakkında sağlık uzmanınızı mutlaka bilgilendirin.Kullandığınız tüm takviyeler hakkında her zaman sağlık uzmanınızı bilgilendirin.

Related Ingredients

Vitamin D Vitamin K2 Niacin (Vitamin B3) Folate (Vitamin B9)

Kısa Bilgiler

Dozaj: Note: High-dose supplementation no longer recommended based on clinical trial evidence; General: 15 mg/day (22.4 IU)
Formlar: capsule softgel liquid
Doğal Kaynaklar: Sunflower seeds, Almonds, Hazelnuts, Wheat germ oil, Spinach, Avocado
Üst Sınır: 1,000 mg/day (1,500 IU natural, 1,100 IU synthetic)
En İyi Zaman: With meals containing fat

Kanıt Özeti

Atherosclerosis C

FDA Sorumluluk Reddi: Bu ifadeler Gıda ve İlaç Dairesi (FDA) tarafından değerlendirilmemiştir. Bu web sitesindeki ürünler ve bilgiler herhangi bir hastalığı teşhis etmek, tedavi etmek, iyileştirmek veya önlemek amacıyla tasarlanmamıştır. Sunulan kanıt dereceleri, yayımlanmış hakemli araştırmalarımızın analizine dayanmaktadır ve tıbbi tavsiye niteliği taşımamaktadır. Herhangi bir takviye rejimine başlamadan önce her zaman sağlık uzmanınıza danışın.