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Vitamin E (Ester Form, Fat-Soluble Vitamin)

Alpha Tocopheryl Acetate

Brand names: Ephynal (acetate form), various supplement preparations

Alpha-tocopheryl acetate is a stable ester form of vitamin E used to prevent and treat vitamin E deficiency and as a vitamin E source in supplements and topical preparations.

Dosing — being independently re-sourced

ClinCalc Pro is rebuilding its dose data from primary open sources — the manufacturer SmPC (eMC), the WHO Model Formulary and other official references — under clinician review. This drug's structured dose is not yet published here. Confirm all doses against the product SmPC and your local formulary before prescribing.

Clinical monograph

How it works

After hydrolysis to free alpha-tocopherol it acts as a lipid-soluble antioxidant, protecting cell membranes from free-radical-mediated oxidative damage.

Prescribing in practice

  • High doses may increase bleeding tendency and can enhance the effect of anticoagulants, so use cautiously alongside antithrombotic therapy.
  • It is the esterified, more stable form intended to deliver vitamin E activity; reserve supplementation for genuine deficiency or malabsorption.
  • Adequate dietary fat and bile are needed for absorption, which is relevant in cholestatic and malabsorptive conditions.

Monitoring

Monitoring is largely clinical according to the deficiency state, with serum vitamin E measurement reserved for suspected significant deficiency or malabsorption.

Counselling the patient

  • Take with food for better absorption.
  • Inform your clinician if you are on blood-thinning treatment.
  • Avoid high-dose self-supplementation without advice.

Evidence & guidelines

Vitamin E preparations are well established for correcting deficiency, with no robust evidence supporting routine high-dose use for disease prevention.

Reference: NICE CKS Vitamin deficiency; NHS Vitamins and minerals guidance; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. Monograph status: clinician-reviewed (2026-07-04).

Related

Curated clinical cross-links plus same-class fallbacks.

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