Fat-soluble vitamin E
ATC code: A11HA03 (Tocopherol (vit E))
Brand names
Aquasol E
Alpha-tocopherol is absorbed in the small intestine within chylomicrons and handled by alpha-tocopherol transfer protein in the liver, where it is secreted into the bloodstream within VLDL. Its primary role is antioxidant defence of lipid membranes: the molecule donates a hydrogen to the peroxyl radical of a lipid chain and breaks the lipid peroxidation cascade. The alpha-tocopherol radical is regenerated by ascorbic acid and ubiquinol. High plasma concentrations interfere with vitamin K-dependent gamma-carboxylation of clotting factors, which explains the bleeding risk at megadoses.
First line
First-line treatment for confirmed vitamin E deficiency. Indications: cystic fibrosis with pancreatic insufficiency, abetalipoproteinaemia, paediatric cholestatic liver disease, short bowel syndrome, ataxia with vitamin E deficiency (AVED). AEMPS approves oral doses of 50–400 mg/day under plasma alpha-tocopherol monitoring.
The drug is promoted for these uses outside international guidelines. Each entry below is analyzed against AEMPS, FDA, EMA, Cochrane and major RCTs.
Not recommended
Vitamin E is sold for rejuvenation, immunity and longevity. There is no evidence base. The 2014 Cochrane review of antioxidants and the 2005 Miller meta-analysis showed that high-dose alpha-tocopherol does not extend life and raises all-cause mortality with long-term use. lists vitamin E as an option in biopsy-confirmed non-alcoholic steatohepatitis (NASH) at 800 IU/day under hepatology supervision. That is a distinct clinical setting, not general anti-aging. If vitamin E was recommended for rejuvenation, consider seeking a second opinion.
Not recommended
Vitamin E was promoted for years as an antioxidant protecting the heart and vessels. HOPE-TOO (JAMA 2005, over 7000 patients) tested 400 IU/day alpha-tocopherol vs placebo for seven years: no difference in cardiovascular events, but more hospitalisations for heart failure. The Miller meta-analysis (Ann Intern Med 2005, 135 967 patients) linked doses above 400 IU/day with higher all-cause mortality. The 2014 Cochrane review confirmed that antioxidant supplements do not reduce cardiovascular events. If vitamin E was prescribed for the heart, consider seeking a second opinion.
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FDA Category A at physiological doses (up to 15 mg/day). High doses (above 400 IU/day) in pregnancy are not studied and not justified – megadoses displace vitamin K and increase neonatal bleeding risk. AEMPS advises against exceeding the 1000 mg/day upper limit in pregnancy.
Compatible at physiological doses. Hale L1 up to 200 mg/day, L3 above 400 IU/day. Alpha-tocopherol enters breast milk and supports neonatal nervous system maturation. High doses in nursing women provide no additional benefit to the infant.
Reference information, not a clinical decision. Discuss feeding pauses or changes with your physician or an IBCLC.
Alpha-tocopherol is evaluated for the following indications with varying evidence strength: Vitamin E deficiency (evidence tier A), Primary cardiovascular prevention in individuals without established CVD (evidence tier F), Anti-aging and longevity (evidence tier F). See the full indication matrix with dosing and citations above on this page.
Common side effects of Alpha-tocopherol (≥ 1 in 100): Nausea, Diarrhoea, Abdominal cramps, Fatigue and weakness, Headache. See the Safety section for uncommon and serious reactions.
FDA category A. FDA Category A at physiological doses (up to 15 mg/day). High doses (above 400 IU/day) in pregnancy are not studied and not justified – megadoses displace vitamin K and increase neonatal bleeding risk. AEMPS advises against exceeding the 1000 mg/day upper limit in pregnancy.
Compatible at physiological doses. Hale L1 up to 200 mg/day, L3 above 400 IU/day. Alpha-tocopherol enters breast milk and supports neonatal nervous system maturation. High doses in nursing women provide no additional benefit to the infant.
Alpha-tocopherol is contraindicated in: Hypersensitivity to tocopherol or excipients; Neonatal vitamin K deficiency without prior K correction; Concomitant anticoagulant therapy without INR monitoring. Full list in the Safety section.