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Check vitamin E intake vs RDA — see mg/day, % of RDA and food sources.
Check vitamin E intake vs RDA — see mg/day, % of RDA and food sources.
Enter values above and click Calculate — results will appear here with the formula explained.
Vitamin E RDA is 15 mg daily for adults 19+ as alpha-tocopherol — the only form the liver's transfer protein retains. This fat-soluble antioxidant protects cell membranes from lipid peroxidation; this calculator checks intake as percent of RDA. Average diets supply 7–9 mg, so roughly 90% of adults fall short on paper — though overt deficiency is rare outside fat-malabsorption disorders.
Rich sources concentrate the vitamin efficiently: sunflower seeds (~10 mg/oz), almonds (~7.7 mg/oz), hazelnuts, peanut butter, wheat-germ oil, sunflower/safflower oils and spinach. One ounce of almonds plus a tablespoon of sunflower oil nearly covers the RDA — the gap is a snack, not a supplement protocol, for most people.
Why shortfalls rarely matter clinically: deficiency (hemolysis, retinopathy, ataxia) appears almost exclusively in abetalipoproteinemia, cystic fibrosis, cholestasis and premature infants — not in healthy adults eating 8 mg. The RDA targets optimal antioxidant status, and plasma levels plateau well below it, so 10 mg from food functions nearly identically to 15 mg for most outcomes studied.
Supplement caution is the real story: high-dose alpha-tocopherol (≥400 IU) displaces gamma-tocopherol (the form linked to anti-inflammatory effects), may raise bleeding risk by antagonizing vitamin K, and meta-analyses associate high-dose supplementation with slightly increased all-cause mortality. The 1,000 mg UL applies to supplements; food has no upper limit and no such signals.
Drug and condition interactions: warfarin and antiplatelet users should avoid E supplements without clinician oversight (bleeding risk stacks); fat malabsorption (celiac, Crohn's, bariatric, cholestasis) warrants monitored supplementation; smokers and diabetics show higher oxidative turnover but benefit most from food patterns (nuts, oils, greens), not pills.
Practical adequacy: cook with sunflower or wheat-germ oil, snack on almonds or sunflower seeds, add spinach to one meal — that trio reliably lands 12–18 mg. This is general information; diagnosed deficiency or anticoagulant therapy needs clinical dosing, not calculator reassurance.
Check vitamin E intake vs RDA — see mg/day, % of RDA and food sources. Formula: RDA: 15mg 19+. Example: With 12 mg intake: 80% of the 15 mg RDA — add 1 oz almonds (7.7 mg) to reach ~130%.
Vitamin E RDA is 15 mg daily for adults 19+ as alpha-tocopherol — the only form the liver's transfer protein retains. This fat-soluble antioxidant protects cell membranes from lipid peroxidation; this calculator checks intake as percent of RDA. Average diets supply 7–9 mg, so roughly 90% of adults fall short on paper — though overt deficiency is rare outside fat-malabsorption disorders.
Rich sources concentrate the vitamin efficiently: sunflower seeds (~10 mg/oz), almonds (~7.7 mg/oz), hazelnuts, peanut butter, wheat-germ oil, sunflower/safflower oils and spinach. One ounce of almonds plus a tablespoon of sunflower oil nearly covers the RDA — the gap is a snack, not a supplement protocol, for most people.
Why shortfalls rarely matter clinically: deficiency (hemolysis, retinopathy, ataxia) appears almost exclusively in abetalipoproteinemia, cystic fibrosis, cholestasis and premature infants — not in healthy adults eating 8 mg. The RDA targets optimal antioxidant status, and plasma levels plateau well below it, so 10 mg from food functions nearly identically to 15 mg for most outcomes studied.
Supplement caution is the real story: high-dose alpha-tocopherol (≥400 IU) displaces gamma-tocopherol (the form linked to anti-inflammatory effects), may raise bleeding risk by antagonizing vitamin K, and meta-analyses associate high-dose supplementation with slightly increased all-cause mortality. The 1,000 mg UL applies to supplements; food has no upper limit and no such signals.
Drug and condition interactions: warfarin and antiplatelet users should avoid E supplements without clinician oversight (bleeding risk stacks); fat malabsorption (celiac, Crohn's, bariatric, cholestasis) warrants monitored supplementation; smokers and diabetics show higher oxidative turnover but benefit most from food patterns (nuts, oils, greens), not pills.
Practical adequacy: cook with sunflower or wheat-germ oil, snack on almonds or sunflower seeds, add spinach to one meal — that trio reliably lands 12–18 mg. This is general information; diagnosed deficiency or anticoagulant therapy needs clinical dosing, not calculator reassurance.
With 12 mg intake: 80% of the 15 mg RDA — add 1 oz almonds (7.7 mg) to reach ~130%. A day with almonds, sunflower oil cooking and spinach lands near 18 mg without any supplement.
Last reviewed: September 2026 · Report an error