← The FormularyLong gameVitamin E
Also known as Tocopherol / alpha-tocopherolFamous. Complicated. Worth reading twice.
Here is the thing a prostate formula containing vitamin E owes you. In 2011 the SELECT trial — 35,000 men, one of the largest prevention trials ever run — found that 400 IU a day of vitamin E *increased* prostate cancer diagnoses by 17%. Not reduced. Increased. That result ended the era of high-dose antioxidant supplementation and it should inform how anyone reads this ingredient. PROSTATE contains 25 mg, roughly 37 IU: about a tenth of the SELECT dose and a little above the daily requirement, which is the range where vitamin E behaves like a nutrient rather than a drug. The practical instruction matters more than the panel: do not take a separate high-dose vitamin E alongside it. In SEAL and POLISH it is doing an entirely different job — antioxidant and preservative, on the skin, where none of the above applies.
A fat-soluble essential vitamin and the body's main antioxidant inside cell membranes. Also, in tiny amounts, the ingredient that stops oils in a formula from going rancid.
Cell membranes are built from fats, and fats oxidise. Vitamin E sits inside the membrane and absorbs that damage, then gets regenerated by vitamin C. It is the fat-phase half of the body's antioxidant system — which is also why it works as a preservative in an oil-based product.
Protects fats in cell membranes from oxidation, supports normal immune function, and in topicals contributes antioxidant protection and skin conditioning.
Everyone needs it; almost nobody is deficient, because it is in nuts, seeds and vegetable oils. As a supplement it is worth having at nutritional amounts and worth avoiding at heroic ones.
With a meal containing fat — it is fat-soluble and absorption depends on it. Topically, it comes in the formula rather than on its own.
Nothing, which is correct. Nutrients at nutritional amounts prevent problems rather than produce sensations.
Grade A as an essential nutrient with a well-defined requirement. The supplement literature is a cautionary tale: SELECT (JAMA, 2011) reported a 17% increase in prostate cancer incidence at 400 IU/day against placebo, roughly 11 additional cases per 1,000 men over seven years, and the trial's supplementation was stopped early. The tolerable upper limit for supplemental vitamin E is 1,000 mg/day, but the useful ceiling in practice is far lower.
Read the labelDo not stack high-dose vitamin E on top of this. Speak to a doctor first if you take blood thinners — vitamin E has mild anticoagulant effects. Not a treatment for any condition.
Evidence grades describe how well an ingredient is studied — A well-supported, C emerging — not a promise of results. Educational, not medical advice. Doses are typical ranges; follow the label on the product.