Vitamin E

Single-ingredient vitamin E reference formula at 268 mg per serving, developed as a softgel or capsule.

Vitamin E is a reference formula for brands building a single-ingredient tocopherol product around a default amount of 268 mg. The formula carries vitamin E as the only active ingredient, so the development work centers on the form of the vitamin, natural or synthetic and free or esterified, and on the unit in which the amount is stated, because milligrams and IU are not interchangeable for this vitamin.

An oil-filled softgel is the lead format for a fat-soluble vitamin. Labels state vitamin E in IU and in mg side by side, so IU and mg amounts are kept separate and the choice of unit is left to the brand.

Ingredient Composition

IngredientPer ServingRaw Material FormAlternative Form (same amount of active)
Vitamin E268 mg (default amount; IU amounts are kept separate)Alpha-tocopherol oil, natural (d-alpha) or synthetic (dl-alpha); specification 268 mg vitamin E per serving on the basis set with the supplierAlpha-tocopheryl acetate (ester), with the input set so the label amount is on the same basis; dry vitamin E powder for capsules

Amounts are shown in the unit printed on the label. Alpha-tocopherol is C29H50O2 at 430.7 g/mol (PubChem CID 14985) and alpha-tocopheryl acetate is C31H52O3 at 472.7 g/mol (CID 86472), so the free tocopherol and its acetate carry different amounts of vitamin E per gram. The IU and mg values on labels depend on whether the vitamin is natural or synthetic, and a review notes that antioxidant potency may differ between the two sources [1]. For that reason IU and mg tiers are not converted into each other.

Intended Benefits & Formula Rationale

This formula is designed for products positioned around antioxidant nutrition. Vitamin E is included as the single active so that the form, the unit and the carrier can be set without interaction with other actives.

Intended Benefit DirectionKey IngredientsFormulation Rationale
Antioxidant nutritionVitamin EVitamin E, with the tocopherols and tocotrienols, consists of compounds essential for animal cells, and plants accumulate them to guard oils against oxidation [1]. Evidence: Referenced
Natural and synthetic sourcesNatural or synthetic vitamin ESome evidence suggests the antioxidant potency may differ between natural and synthetic sources [1]. Evidence: Referenced; the abstract gives no quantified difference
Intake levelVitamin EA meta-analysis of trials of high-dosage vitamin E (400 IU per day or more) reported a higher pooled all-cause mortality risk difference, with limitations: the trials were often small and run in patients with chronic disease, and generalizability to healthy adults is uncertain [2]. Evidence: Referenced; a dose-limit review is part of the plan

The design keeps one active and chooses the form and unit before the amount. Brands that want mixed tocopherols or tocotrienols move to a separate project.

Available Formats

Two formats can be developed from this reference formula. The brand sets pack counts; the figures here are opening suggestions.

FormatUnitPer ServingPack SizeOther Ingredients (typical)Suitability
Softgel1 softgel268 mg vitamin E60 or 100 softgelsSoybean oil, gelatin, glycerin, purified waterLead format; oil fill suits a fat-soluble vitamin
Capsule2 capsules268 mg vitamin E120 capsules (60 servings)Filler, flow agent, magnesium stearateDry vitamin E powder in a hard capsule

Raw Material Input & Fill (Design Estimate)

Design estimates. The input is the labeled amount divided by the assumed vitamin E content of the raw material, taken as 100% for the oil and 50% for the dry powder, on the same basis as the label amount.

FormatRaw Material Input per UnitDesign FillBalance for ExcipientsVerification Before Scale-Up
Softgel268 mg vitamin E oil500 mg fill232 mg carrier oilFill weight variation, shell compatibility, content assay
Capsule268 mg dry powder per capsule (134 mg vitamin E, 2 capsules per serving)300 mg per capsule32 mgPowder flow, fill weight variation, content assay

Liquid and tablet versions are separate projects, because each needs a different carrier or a dry vitamin E grade of its own.

Formulation Considerations

Unit and form before amount. The same printed number means a different amount of vitamin E depending on whether it is mg or IU and whether the source is natural or synthetic. The brand picks the unit and the source first, and the raw material specification, the label wording and the supplier documentation all follow from that choice.
Free tocopherol or ester. Alpha-tocopherol (430.7 g/mol) and alpha-tocopheryl acetate (472.7 g/mol) differ in molecular weight, so the amount of raw material for the same labeled vitamin E differs. The label basis is written into the specification so that the assay result matches the stated amount.
Oil fill and shell. In the reference softgel the vitamin sits in soybean oil inside a gelatin and glycerin shell. The carrier oil and the shell are checked for compatibility, and the oil choice carries allergen labeling consequences for the sales market.
Dose tier and safety review. Amounts up to 1200 IU are possible, so the dose tier needs a safety review. A published meta-analysis links high-dosage vitamin E (400 IU per day or more) with a higher all-cause mortality risk difference, with caveats on the trial populations [2], so the tier and the sales-market limits are reviewed before a finished product is developed.

Customization Options

Brands adjust the amount, the unit, the source and the format.

ParameterRangeNote
Amount per serving180 mg or 268 mg; 400 IU or 1000 IUOptions for the brand; mg and IU tiers are not converted
SourceNatural or syntheticSets the label unit and the supplier documents
Chemical formFree tocopherol or acetate esterChanges the raw material mass per serving
FormatSoftgel or capsuleLiquid and tablet are separate projects
Add-onsVitamin C, selenium, coenzyme Q10Each addition changes the fill and is a separate project

The pilot run confirms the assay of vitamin E on the chosen label basis, compatibility of the oil fill with the shell, and the dissolution of the first units.

Technical Status & Data Sources

ItemStatusDetails
Reference formulaNIH DSLDThe ingredient and amount come from a labeled product in the NIH DSLD (268 mg on the label of CF013570; example DSLD labels 201672, 202375, 202387). The label names the ingredient as vitamin E; the natural or synthetic source and the free or ester form are set with the supplier.
SpecificationSet in formulationVitamin E, 268 mg per serving on the label basis chosen with the supplier; source, form, assay limits and method are fixed with the supplier. Unit size, fill weight and stability are set in formulation.
Data sourceNIH DSLDDSLD v9.4.0, downloaded 2026-01-10: 50,824 reference formulas merged from on-market labels with complete ingredient amounts. Counts show how labels are distributed.
Market reviewPer marketDose limits, labeling and claims are reviewed for each sales market before a finished product is developed.
ReferencesSources[1] Colombo ML. An update on vitamin E, tocopherol and tocotrienol-perspectives. Molecules. 2010;15(4):2103–2113. DOI · PubMed<br>[2] Miller ER 3rd, Pastor-Barriuso R, Dalal D, Riemersma RA, Appel LJ, Guallar E. Meta-analysis: high-dosage vitamin E supplementation may increase all-cause mortality. Ann Intern Med. 2005;142(1):37–46. DOI · PubMed

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